Have an app idea?
Left alone, AI decides differently every time and your app gets messy. Deveji Build gives it a solid base and rules to follow.
Tell us your idea. We’ll tell you if Build is a fit.
How it fits together
01 You describe a feature
Let people pick a service and book a time.
02 Build guides your AI
03 Your AI builds it
From the team behind Lans, Scratchmap of Poland and Warepair.
Client work spanning payments, maps, offline features and physical access. See the work ›
Why Deveji Build exists
Your app will keep changing. Left on its own, AI builds every change a different way, and the app slowly turns into a mess.
Deveji Build gives it one foundation and one way of working, so version ten is as solid as version one.
A working app on day one. Your time goes into what makes your idea different.
Every feature is added the same way, so the app stays tidy as it grows.
Ask for changes for years, not weeks. The structure is built for the next version.
Builder and manager
You already use Claude Code, Cursor or Codex. Build doesn’t replace them. It sits on top, as the project manager and tech lead your AI never had.
It hands the AI a finished foundation, tells it how this app is built, and checks the work before anything ships.
You
The idea
“Let people pick a service and book a time.”
Deveji Build
Project manager · Tech lead
Hands over the foundation. Sets the rules. Checks the work.
Your AI
The builder
Claude Code, Cursor or Codex writes the code.
Result
Your app
Built the same way every time.
Sign-in, navigation, data, notifications: already built. The AI extends instead of reinventing.
How this app is structured and how a feature is added. The AI follows them on every change.
Before a feature counts as done, the AI walks through a fixed review and fixes what it finds.
Works with Claude Code, Cursor or Codex, and with whatever model comes next. The manager stays the same.
What you get
AI writes code fast. What it lacks is a foundation to start from, rules to work by and a way to check itself. Build supplies all three.
Not a demo project. An app with the critical, boring parts already done and wired up, so day one starts where most projects arrive after months.
Already working
The project’s rules, written for the AI coding tool. The AI reads them before it touches anything, so it builds like a senior engineer would, not like a fresh session.
Covers
When you say a feature is done, the AI isn’t. It runs a fixed review of configuration, data, edge cases and the journeys customers actually take, and fixes what it finds before anything reaches production.
How you work with Build
Pick what your app needs: sign-in, payments, notifications and more. Build generates a working app with those parts in place.
Describe what customers should be able to do. Your AI coding tool builds it into the app, following Build’s rules.
Example request“Let people save their favourite places.”
Test it on your phone. Say what feels wrong, and review the next version.
Example request“Make saved places easier to find from the home screen.”
Mark the feature finished and the AI runs Build’s release review on its own: checks, fixes, and only then a push towards production.
Some features and launch decisions need specialist input. We’ll discuss the likely requirements of your idea before you join.
The experience behind Build
Our client work has involved payments, location, offline use, AI features and connections to physical hardware. Build draws on the patterns and lessons developed through that work.
Payments and physical access
Customers purchase access on their phone and use the app to enter a coworking space in San Francisco.
The project connects the digital purchase experience with access to a physical location.
A consumer mobile app
Available as Mapa Polski Zdrapka
A mobile version of the physical scratch map, created for Telewizja Młodych. People track the places they visit and discover what to explore next.
The project includes location features, offline functionality and an AI voice experience.
An on-demand service app
A repair-booking experience with technician tracking, payments and AI-assisted pricing.
The product was built and tested but did not launch publicly.
Built and tested · Not publicly released
“Deveji handled every aspect of the project with care, delivering an outstanding product on time. We're thrilled with the outcome and will be working with them in the next stages.”
Tahsin AktasCEO, Lans“Partnering with Deveji has been a game-changer for Warepair. Their technical expertise and creative input throughout the development process made Warepair what it is today.”
Victor AmaechiFounder & CEO, WarepairWho’s behind it
Deveji is the team behind the client projects shown here. Build brings together the starting point, project instructions and checks developed through that work.
You can explore the apps and learn who you’re applying to work with.
Co-founder
Code generation, architecture, the development process and engineering standards.
LinkedIn ›
Co-founder
Data modelling, AI, payments, complex features, Firebase and the backend.
LinkedIn ›Early Access
Deveji Build is the system behind our own client projects. Early Access opens it to a selected group of founders.
Tell us what you’re building. We’ll confirm Build is the right fit for your project and send you the access details and next steps.
Applying is free and does not commit you to buying.
We keep the group deliberately small, so every founder gets proper onboarding and a direct line to the team, and what we learn from their projects shapes the plans that follow.
A short form about your idea and where you are with it. A few sentences are enough; you don’t need a technical specification.
Apply for early accessThe form is hosted by Tally. How we handle your answers is in our Privacy Policy.
Questions
No. The whole process is designed so the AI does the building. You need to know what you want to create and roughly how it should feel to use. You describe, the AI builds, Build keeps it in order.
You guide the product: what it should do, how it should feel and which changes to accept. Build gives AI a foundation and instructions to work from. You review the results, and more complex work may need specialist help.
On its own, AI is a very capable builder with no manager. It starts from nothing, decides differently every time and calls the job done when the code runs. Build gives it a project manager and a tech lead: a finished foundation to start from, rules for how this app is built, and a review it has to pass before a feature ships. Same AI, a structure around it, and a visible jump in quality.
Yes. Build is designed to support ongoing development. You can continue requesting features and improvements as you learn from customers. Changes still need to be reviewed and tested.
Mobile apps for iOS and Android, built from one project. Tell us what your customers need to do, and we’ll tell you whether Build is a good fit.
A computer, the mobile development tools and an AI coding tool such as Claude Code, Cursor or Codex. Apple only allows iOS apps to be built on a Mac, so Build works best on macOS; Android apps can be built on macOS, Windows or Linux. The Build Kickoff videos walk you through the setup.
Depending on your project, you may also pay for AI tools, hosting, app-store accounts and external services. Your access details will explain what Build includes and which costs are separate.
Build works best when your app starts from its foundation. If you already have a project, you can book a session with one of our engineers to review it and plan the move. Sessions are paid separately.
The Build Kickoff: 3 setup videos take you from installation to your first feature, and every month there’s a live Q&A where you can bring your questions to the team. If you want hands-on help with a hard feature or a review of your project, you can book a session with one of our engineers. Sessions are paid separately.
You do. Deveji doesn’t own the apps built with Deveji Build; what your plan decides is how you may use Build’s foundation. The Personal plan covers your own apps and personal projects. Client work, agency use and transferring an app to someone else need a higher plan.
Yes, when they are available in a coding tool supported by Deveji Build. You can select them there and continue working on your existing project. Availability and cost depend on that tool and your plan.
No. Build works best with the latest Claude or OpenAI model, and the Build Kickoff videos show the recommended setup. You can change it later, when you want different capabilities or a different budget.
It can help with complex work and reduce some back-and-forth. Results depend on the task and the model, and changes still need to be reviewed and tested.
Early Access starts with the Personal plan at $299, a one-time payment, with a 14-day money-back guarantee. Higher plans for client and agency work will follow. Applying is free and does not create a purchase.
Explore the free project instructions and release checklist from our workflow.