Fixed-price AI software. Shipped in 2 to 12 weeks.
A small team of engineers and their agents builds production software for companies in the US and EU. You see the price and the date before we start.
- $10,000 and up, fixed
- Fixed quote in 3 business days
- Code and accounts in your name
- Estimate your price
What we build.
Six kinds of work, from a quick test to a full platform. Each gets a fixed price and a week count in writing before we start.
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Proof of concept
Find out if your idea works on your own data before you pay for a full build.
- From
- $10,000
- Time
- 2 to 4 weeks
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AI workflow automation
Repetitive work your team does by hand, handed to AI and running on its own.
- From
- $10,000
- Time
- 2 to 4 weeks
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Internal tools
Portals, dashboards and admin tools your team uses every day.
- From
- $10,000
- Time
- 2 to 8 weeks
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MVP development
The first version of your product, with accounts and payments, in front of real users.
- From
- $25,000
- Time
- 4 to 8 weeks
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Product development
A full product on iOS, Android and the web, built by one team.
- From
- $50,000
- Time
- 8 to 12 weeks
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Platforms and rebuilds
Software for many customers or teams, or a new system in place of an old one, with your data moved over.
- From
- $50,000
- Time
- 8 to 12 weeks
These are guide prices. Your written quote fixes the exact price before we start. Full pricing, including advisory and the retainer.
Estimate your priceMost software projects have no fixed price, no fixed date, and nobody who can name the person writing the code. Ours have all three.
Five steps from brief to production.
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A call or a brief.
30 minutes, or one page. No NDA needed yet.
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A written quote in three business days.
One price, one date, the scope in plain language.
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Kickoff in your name.
Repository, cloud and model accounts created under your organisation.
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Weekly demos. Week-one exit.
Working software every week. Stop after the first demo and keep it all.
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Production, then the fix window.
Deployed on your cloud, monitored, documented. 30 to 90 days of fixes.
The full process, eight steps, the same every time.
Our own product, and sample builds.
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Own product
Nibblio, nutrition built on blood work
A consumer nutrition app that reads your lab report, builds a weekly meal plan around your biomarkers, and learns from what you eat. iOS and Android, English and Serbian. Built by us and run by us, so it is labelled as our own product.
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Sample build
Invoice intake agent, a sample build
A small web app that reads invoice PDFs from a shared inbox, extracts the fields, checks them against rules, and puts each invoice in a queue where a person approves or fixes it. A Feature-tier build.
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Sample build
Clinic booking app, a sample build
A patient app for a private clinic. Patients book a slot and answer a short symptom check before the visit. Staff see the answers in an admin calendar and place urgent cases first. A Product-tier build.
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Sample build
Demand planning, a sample build
A forecast dashboard for a retail planning team. Each week it predicts demand per product and store from sales history, promotions and season. Planners adjust the numbers, and a short note explains every big change. A Product-tier build.
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Sample build
Language practice app, a sample build
A mobile app for speaking practice. Learners hold short role-play conversations with an AI tutor, get feedback on pronunciation and keep a daily streak. Lesson authors write the scenarios in a web admin. A Product-tier build.
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Sample build
Logistics control tower, a sample build
A control tower for a freight company and its customers. Live shipments on a map, delay predictions with reasons, an exception workflow, and a driver app for proof of delivery. Each customer sees only its own data. A Platform-tier build.
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All 15 cases
Filter by industry and by type of build.
Each case is labelled named client, confidential client, own product, or sample build.
What we build with.
- TypeScript
- Python
- Astro
- React
- Next.js
- React Native
- Expo
- Tailwind CSS
- Hono
- FastAPI
- PostgreSQL
- pgvector
- Redis
- RabbitMQ
- Stripe
- Resend
- Cloudflare
- AWS
- Hetzner
- Sentry
The full stack, with what we have shipped and what would be a first.
Five things that do not change.
- Price and date are written down before work starts.
- The person you talk to designs and reviews the code.
- Production is the finish line.
- You own everything from day one.
- We say what we have not shipped.
Questions we get on the first call.
How long does a build take?
A Feature Sprint takes 2 to 4 weeks, a Product Sprint 4 to 8 weeks, a Platform Sprint 8 to 12 weeks. The end date is on the quote. We show you working software every week.
How does pricing work?
Every build is a fixed-price sprint. You get a written quote with a price and an end date after a 30-minute call and a one-page brief. The quote covers the written scope. If we underestimated, we absorb it. Scope changes get a new written quote before we start on them.
What do you build?
Custom software with an AI part that does real work. Document processing, email triage, data extraction, matching, generation, internal tools, and full products built around one of those. We do not build marketing automation, outbound systems or chatbots with no data behind them.
Where are you, and how do time zones work?
You contract with Infinity Systems LLC, a US company registered in Wyoming, and pay in US dollars. We work on Central European Time, from Serbia. For US clients that means a shared window of 9:00 to 13:00 Eastern, and work delivered while you sleep. EU, UK and Swiss clients share our full working day.
Who writes the code, people or AI?
Both. AI coding agents write most of the code. The founder designs the architecture, writes the hard parts, reviews every change, and is on every call. Every change ships with tests and goes through a review gate before it reaches your repository.
Book a call, or send the brief. A written price in three working days.
No NDA needed for the call. We sign one within 24 hours if you want it.
Not sure about the budget? Estimate your price in six questions