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Posted by u/deofoo 7 days ago
Show HN: Craftplan – I built my wife a production management tool for her bakerygithub.com/puemos/craftpl...
My wife was planning to open a micro-bakery. We looked at production management software and it was all either expensive or way too generic. The actual workflows for a small-batch manufacturer aren't that complex, so I built one and open-sourced it.

Craftplan handles recipes (versioned BOMs with cost rollups), inventory (lot traceability, demand forecasting, allergen tracking), orders, production batch planning, and purchasing. Built with Elixir, Ash Framework, Phoenix LiveView, and PostgreSQL.

Live demo: https://craftplan.fly.dev (test@test.com / Aa123123123123)

GitHub: https://github.com/puemos/craftplan

larodi · 5 days ago
Good, I will with great pleasure now reiterate my point about people now producing their own code, even complex stuff, rather than downloading potentially malicious and foreign code. Which as a tendency threatens ALL clumsy big ERP service providers selling you SAAS.

Go ahead - I'm ready to be down-voted again and again until folks realize it is inevitable, as is inevitable that many companies in the area of business software are going down down down.

tantalor · 5 days ago
I'll down vote just for the whiny attitude and superior tone.

Dead Comment

nkapias · 5 days ago
I'm the main dev in a small IT company, my backlog is filled with requests, it's not always easy to prioritize and plan, some of those small projects are ignored for months, yet their business value are sound.

I've observed a new trend, managers who are frequently in the wait list started to use AI to generate small local apps. They still rely on my input when it's complex, or when implementation could generate risks or need resilience and would ask for small code reviews when they are unsure of the generated code quality.

The result is win win, I have more time for high value projects the executives want to prioritize, and managers can innovate faster almost on their own.

monknomo · 4 days ago
I have started to notice some similarities to MS Access development, where an SME creates a useful app for themselves and begins to share it.

I wonder if it will have a similar pattern of creating a mess as the app starts to get uptake and the SME can't scale their attention to be an app owner, as well as an SME at the same time.

Also makes me think that an llm-developed-app-friendly shared datastore would be a useful thing to have

nickthegreek · 4 days ago
At my work, I am not an engineer, but work in the operations side. Our managers have a hard time getting engineering resources to do similar stuff like you were discussing.

I have been empowered to be the quick and dirty build guy for small local apps instead of fighting for engineering resources. Now our managers regularly hit me up on slack with small little items that if built, could increase productivity for their teams. I love it. I'm mostly building systems that work with google workspace (docs/sheets/forms/email). So its a lot of little appscripts, or single html file apps made available via google sites. Most of our operations staff dont have all the required underlying expertise to quickly pull this kind of thing off, and are not interested in strengthening those talents. It has allowed me to shine bright while also providing much needed relief to many teams.

kayo_20211030 · 4 days ago
How do these managers deploy the code? Is it run locally, or sent to some server?

Excel used to be, and probably still is, the primary competitor to enterprise-developed apps - a lot of businesses run on it. But, that was a locally deployed phenomenon, with an added ability to deploy it somewhere else by simply emailing the workbook to someone else.

In your organization, how do your managers turn their code into working software?

cube00 · 4 days ago
While it's great now, my worry is that these apps will start to rot as the platforms and infra they run on advance forward, then developers will be on the hook for migrating them.

Although if they were HTML/JS/CSS with no dependencies you could argue that might be quite bullet proof since browsers have an unmatched record of backward compatibility.

currydove · 4 days ago
i'm noticing this across even startups and mid-market companies too!

i don't think its going to be a silver bullet, but it doesn't need to be. niche, well understood problems with simple tooling needs are the best ones to start with.

https://culturecompiled.com/p/things-are-getting-awkward-for...

makerdiety · 5 days ago
That sounds good enough for me.
DrScientist · 5 days ago
I think the real question here isn't whether roll your own software will replace large complex 'configurable' systems, but whether companies that roll their own will replace the companies that don't.

ie are the efficiency gains of having something that's exactly tailored to you enough to create a competitive advantage.

It's back to the old idea - of software eating the world.

So for example in the UK - there is a relatively new 'energy' company called Octopus - it's grown and grown and finally overtaken the old established players.

In reality it's not an energy company - it's a software company - that used it's expertise in software to overtake it's energy supplier competitors - it was able to provide innovative products in the market because it controlled it's own software - rather than 'big vendor says no'.

I think it's telling that the founder originally left school at 16 to write computer games, before coming back to do a degree etc.

ie the question is - for any particular industry what's the benefit of custom software. Does a bakery having it's own give it enough of an advantage?

larodi · 4 days ago
Much of this 'configurability' is there only to allow SAAS. Normally, a mid and small business does not need to tune their IT that much all the time. This is some wet dream it IT service providers' heads. In reality most business (perhaps 80% of it) can work with very old systems, and there are so many examples that prove the statement, that I wouldn't even care to make a list.

> Does a bakery having it's own give it enough of an advantage? 50 bakeries of the same franchise may benefit from it. But it does not need to be SAP or Dynamics365 or something along this line to work. People been doing business with text-mode AS360's for ages, and nobody complained. Coca Cola was using AS-something for the warehousing in 2004, while it was already discontinued for years.

alansaber · 4 days ago
Naturally something custom creates advantage as better software mirrors better workflows. I think the more pertinent point is small companies saving money by accessing custom software on the cheap vs paying for a saas forever.
arethuza · 5 days ago
I'm a bit bitter about Octopus, although they did rescue us from the horrors of our previous supplier their insistence on us getting "smart" meters that can't then function as smart meters because of poor signal and are actually more difficult to read than our old meters has left me not hugely impressed with them.
ericmcer · 4 days ago
I don't think it will ever really happen because of ownership.

Sure this is awesome now and maybe he shipped it in a week using AI or something, but he now owns a critical part of his wife's business. 5 years from now he is gonna be working 50/hrs a week and not want to deal with this project he barely remembers even doing, whenever an SSL cert goes bad or the CC he was paying the server bills with expires or actual bugs happen he is on the line for it.

It is lame to let family/friends pay $20/mo for something you could build in a few weeks, but they will own the product forever, I don't want to.

bdcravens · 4 days ago
Many times we're already on the hook anyways, supporting friends/family even when they are using someone else's product.
newswasboring · 4 days ago
It doesn't have to be this messy. If I were the maker I would treat this as a good first version and transfer the ownership to the business slowly. This is just like working with any consultant.
nobody_r_knows · 4 days ago
I wonder if a very simple moltbot can do the ongoing development on its own. I mean, the hard work is mostly out of the way. This isn't so out of the realm of capability.
k1rd · 4 days ago
in 5 years whatever ai tools will be good enough to have ownership of a critical piece of software that was built now by ai.
jackdoe · 5 days ago
wwfn · 5 days ago
That looks demonstrative! For those that don't want to click, from Aug to Feb S&P is up 10%. "Software - Applications" is down 21%.

But in this context, is Uber[9% weight, down ~4% YTD] a transportation company that roles it's own software for competitive advantage? I think other's in the composition are similar. The takeaway is maybe that the tech landscape is changing or LLMs have spooked investors and they're running without direction. But that doesn't necessarily speak to bespoke software uptake (already) cutting into profits(?) Uber would be fine in that case?

calvinmorrison · 4 days ago
I think ERP providers should continue to exist. It's hard to vibe code financial/accounting specs and there's the IBM factor. There are a bunch of weird ways you can get things wrong.

An ERP has an established workflow that follows GAAP principles.

Hundreds of thousands of customers have cut their teeth on that workflow and improvements are metered out.

The last thing you want is to have to do PCI compliance or 1099 reporting, tax calculations for every jurisdiction. IFRS, Inventory valuation methods, SOX controls, revenue recognition rules, etc.

Not to mention if you get audited saying "Oh yeah we vibe-reconcilled all those statements".

Anything that touches the ERP? sure.

If you re-design ERPs for total AI? Maybe actual ledgers (no - not tables in MSSQL), imdepotency, rollbacks, maybe. still a bad idea.

Don't roll your own crypto. Don't roll your own ERP. Roll everything else around it.

larodi · 4 days ago
> I think ERP providers should continue to exist. It's hard to vibe code financial/accounting specs

Perhaps you would agree that in 2026 it is fairly easy it is to actually agentically-dev a very decent ERP given one has the blueprints such as value stream diagrams, caps, BPMNs, domain models, seq. diagrams, state diagrams and... basically a complete SRS bundle. I doubt this person even needs to be super technical to deploy it.

Does it require that you use large (or small) SAAS? I guess not.

It requires one understands business architecture and know-how related to the application of such mental tools.

Traditionally it requires someone (a person) implementing these, translating them into code. Well this is precisely what LLM agentic systems do - translation. And they do it much cheaper with much shorter dev.cycles. And tailored also.

lelanthran · 5 days ago
> Which as a tendency threatens ALL clumsy big ERP service providers selling you SAAS.

Wait, what?

The big ERP vendors aren't under any threat, the small ones are.

No business is going to switch from a system that has armies of low-paid consultants to in house AI developed system that has effectively zero consultants who can come in and perform the deployment with tested integrations to their accounting system, their 200 suppliers, their customer systems and their 3rd party auditing systems.

But, small businesses who were not going with a 12m contract for 5 consultants, and who dont have any need for integrations to suppliers, customers and 3rd party systems can do their own systems.

It sounds like you are very far removed from ERP and business systems in general.

All magnetic coding is going to do is further entrench existing large systems because new systems, whether AI generated or not, will be too numerous for any one of them to gain traction.

RobinL · 5 days ago
My wife's old company, a fairly significant engineering consultancy, ran it's entire time/job management and invoicing system from a company wide, custom developed Microsoft Access app called 'Time'.

It was developed by a single guy in the IT department and she liked it.

About 5 years ago the company was acquired, and they had to move to their COTS 'enterprise' system (Maconomy).

All staff from the old company had to do a week long (!) training course in how to use this and she hates it.

In future I think there will be more things like 'Time' (though presumably not MS Access based!)

mschild · 5 days ago
> No business is going to switch from a system that has armies of low-paid consultants to in house AI developed system

Are you sure about that? Because thats exactly what Klarna is doing/has done.

https://threadreaderapp.com/thread/1957789124930286065.html?...

larodi · 5 days ago
> It sounds like you are very far removed from ERP and business systems in general.

am I really? it sounds so many people in big ERP service providers are oblivious of the tide rising that will wash them away, because you know what - most of these companies are super pricey, super slow, very messy and tend to fail large-scale projects that cost millions? I've seen this happen personally, and I have personally, as a sole player implemented ERPs with custom inhouse software.

Trust me brother, I know ERPs very well and seen hundreds of high-profile fakers that have zero knowledge of E/R, Business Architecture, and integrations, that still believe they can get away with nonsense.

Hope you're not one of them.

newsclues · 5 days ago
You think the big players aren’t going to use the new tools to massively cut employees and costs?
xtiansimon · 5 days ago
> “…big ERP service providers selling you SAAS.”

My work uses these services and it’s interesting to see the divide between companies who have documented APIs (some also with “marketplaces”), and others who have many thousands of dollars partnerships license requirements to get API access.

Or companies who are very restrictive about what they will let you do with their API, presumably in an effort to control the ecosystem around their products—whether it’s because they fear being open would devalue their product, or they have a strong notion of their market position and won’t admit any integration which upsets their governance.

y-curious · 4 days ago
Do you work in the healthcare space? Sounds like my issues
bs7280 · 4 days ago
This point on security is great point that I have not fully appreciated until now. I have been telling people that my own ability to use claude code has been a game changer for what sort of tools I will or will not pay for or use. This includes random self host services.

For personal use, those making their own software will still be a minority for a while, but at my job we are seeing potential to save $1M-$10M a year by rolling a custom tool vs paying for a commercial one. The saving here come from the tool doing a better job, not the license we pay.

dv_dt · 5 days ago
I think some the prevalence of AI is actually turning the bias on this. It would actually be a return to the roots of the start of early business computing - and sort of picking up where excel et al left off. I don't think it's AI the tech itself, it's the confidence for companies to build a customized software stack and maintain it is what AI mostly contributes.
globular-toast · 4 days ago
Curious how AI is giving people the confidence that they can maintain custom software. Is this Dunning-Kruger at work? It gives me great confidence in being able to stand up a new system, but as someone who has maintained software and databases for 5+ years it gives me nightmares about future maintainability.

Companies have always been able to hire software engineers as well. At least that's my impression in the UK. Is this different in other parts? Not enough engineers left after big tech has hired them all?

globular-toast · 4 days ago
I've been writing custom and very specific software for a business for the past 7 years. They looked into off the shelf solutions but decided it was cheaper to build in house.

If what you predict is true then the sheer amount of software is going to explode. Good for people who actually understand how it all works!

ramshanker · 5 days ago
Not just that, previously many orgs outsourced to consultancy, now when the consultancies also start outsourcing to AI, sooner all business may cut the middleman and have inhouse it teams outsourcing work to AI instead of consultancies !
risyachka · 5 days ago
You do realize that making software by developer for his wife means for random business is hiring a third party dev to build custom software?

So still, for ransom business much cheaper and better to buy software from SaaS vendor.

In this case it was better ONLY because the client is the wife of the developer.

And even now, if he sells this to other businesses - it will be MUCH cheaper to buy his subscription than homebrew the same version of it - as if it starts selling it he will be adding features and support which requires time (which is money).

larodi · 5 days ago
> You do realize that making software by developer for his wife means for random business is hiring a third party dev to build custom software?

No, this is not true. There are so many non-technical users of Microsoft Access that run their won businesses without hiring anyone. A friend of mine had a business with an yearly turnover shy of $3M (which is small, alright) and it was running wired spreadsheets and google forms. 20 people. He never ever bought any software, and existed for more than 10 years, until his wife (yes his waifu) decided to divorce and bring the company down.

Business Architecture is not so much about writing the software, sorry, we as IT professionals would love to think it is, but this is a super weak bias.

haunter · 5 days ago
> rather than downloading potentially malicious and foreign code

So I shouldn't download and use this right? I can't verify if it's potentially malicious or not

larodi · 5 days ago
I meant random gh repos really here, though same argument stands for SAAS which is very very very much interested in your data, and you have exactly zero guarantees and control over what happens to it once ingested. Like - GDPR exists not to protect users, but to enforce anonymization of the data that is then going to be aggregated and sold.

Now imagine my not-so-complext ERP or internal system - can be developed with little or no effort. Why would I give Benioff my dollars rather than spend it on in-house assets, that also increase the valuation of my company? I find very little reason to do so in 2026.

deofoo · 5 days ago
100%
pinewurst · 4 days ago
As if the AI generated slop isn't downloading potentially malicious and foreign code.
nolroz · 2 days ago
Dude. Stay on topic.
shane_kerns · 5 days ago
This is a great piece of software, with much thought put into nitty gritty details. Aside from the gripes around the mobile experience that some have outlined here, I would say you've put much thought into this piece of software. Your wife is lucky that she has a talented software developer for a husband. AI or no AI, I think this is a very clean and beautiful piece of software. This doesn't seem like its Vibe coded, because AI doesn't write such clean code but maybe AI is improving and I'm just bad at telling which is which. Nonetheless, keep up the great work and thanks for sharing. I'm downloading it just to learn from your codebase. Its not like before AI came around talented devs didn't create working side projects to help their loved ones out.
deofoo · 5 days ago
The truth is that I put a lot of work in at the beginning to define the data structure and flows by myself. AI was very useful later to experiment with how to build the views on top of it and to fix some issues.

I still had to think hard about how to make this simple and easy for someone who does not have deep knowledge of this manufacturing domain.

*Lessons learned:*

  1. Data structure is almost everything, then comes business logic
  2. You must have deep domain knowledge of what you are building
  3. Iterate fast on the views built on top of the data structure

*PS*

All mobile fixed had been resolved and deployed ;)

kejaed · 4 days ago
#1 reminds me of my favourite software quote:

"Show me your flowchart and conceal your tables, and I shall continue to be mystified. Show me your tables, and I won't usually need your flowchart; it'll be obvious." -- Fred Brooks

billynomates · 5 days ago
AI will write whatever kind of code you want it to write. If you know how to write clean code and you can describe that in a prompt, it will give you clean code that is indistinguishable from that of a talented dev.
zmhanham · 4 days ago
> If you know how to write clean code.

If we're assuming that:

I find it less time consuming to just write the code, understand it 99% (since I wrote it), and debug the rest, than it is to try to describe it to the AI, understand a fraction of what it spits out, and spend more time understanding it and fixing it.

If you can just write clean code just do that. Also, you will improve your skills even more the more you do that (shocker). So the next time you have to do that it will be even easier. This is called learning a skill.

Sorry for the rough tone, reading that back haha. But still posting because I'm just passionate about it, it's nothing personal though.

Soerensen · 4 days ago
The approach of building for one specific user (your wife) rather than abstracting too early is underrated. You end up with something that actually fits the workflows instead of a generic tool that needs heavy configuration.

Elixir + Ash is an interesting choice for this domain. LiveView particularly shines for internal tools like this where you want the interactivity without managing a separate frontend build. Curious how the AI code generation worked with Ash specifically - the declarative nature seems like it could either help a lot (clear patterns) or confuse models that expect more explicit code.

The BOM with cost rollups is the feature that would have saved me hours in a previous project. Most small batch producers I know either overprice everything out of caution or underestimate costs because tracking ingredient pricing through recipes is tedious in spreadsheets.

toddmorey · 4 days ago
I love this so much. I do worry about the hidden cost of maintaining these software stacks that have a userbase of one. Things like hidden vulnerabilities, bugs, and edge cases that could bring a business down for days.

But I do think the days of just having to learn, tolerate, and accept any commercial software stack for your business because it's too complex to build yourself are over. What vendors remain will have to absolutely meet users with their unique requirements and budget.

deofoo · 4 days ago
Elixir + Ash is so good, and AI works very well with it because it can understand the domain you are working in. LiveView is amazing, not just for internal tools. I would even say that in most cases it will outperform flashy UIs, because it focuses on actual users who work with the app every day, not people who just want to be impressed for a minute
zmhanham · 5 days ago
OK HN, time for us to build a full open source general purpose ERP in Elixir based on Ash XD
t0mas88 · 5 days ago
"That's a great idea! Do you want me to create a PRD, a million markdown files and some useless Playwright tests?" -- Claude
LunaSea · 4 days ago
... and you don't have token credits anymore.
Onavo · 5 days ago
AI Agents Assemble!
artemave · 5 days ago
And I built e-commerce for my wife's micro-bakery https://thonon-les-pains.fr/ (most of it - like product and order management - is behind auth).

I don't think it's useful to anyone - not white label, not open source - but still funny :)

simonklitj · 5 days ago
I don’t live nearby, but thank her for baking gluten free!
lm28469 · 5 days ago
The best part is the domain, I grew up close by

(Le filtre pain/biscuits/gluten est pété sous safari)

MonkeyClub · 5 days ago
Yep the wordplay made me chuckle too :)
rancevent · 4 days ago
Génial comme nom :)
deofoo · 5 days ago
Love that. I was thinking to add e-commerce layer
Jide_Lambo · 2 days ago
I relate to this alot. I've been working in B2B SaaS for years and saw the exact same gap in customer success tooling. The serious tools start at $10k - $50k per year and take months to set up, and everyone else that can't afford them use spreadsheets. There's almost nothing in the middle. What's funny is the actual workflows usually aren't that complicated. The complexity is artificial. It comes from the vendor trying to serve every possible use case. When you build something focused on the real workflow, it turns out you can get 80% of the value in a fraction of the time and cost. The open source angle is smart tool. In B2B, the "let me just try it" factor matter so much. If someone has to sit through a sales call just to see if the tool fits, most small operators will just stick with their spreadsheet.
edoceo · 5 days ago
I love this. I know another small batch baker who also thought it was cool (we'll dig more when sober). BOM+cost is rad. Eager to try forecasting a weekend-rush situation.

My only nit, as a legacy internet goober is, use example.com for these throw away addresses; it's reserved for that purpose.

deofoo · 5 days ago
Thanks! Would love to hear your feedback. I'm a solo developer so iteration is really fast
alejoar · 4 days ago
You could have called it craftpan (pan = bread in spanish :D)