Doing something by hand over and over? Bookings, payments, admin, connecting systems, I'll build you a custom tool that does it for you. From a booking system for a rental shop or clinic to SaaS and internal portals in React + Next.js.
The final scope, price and timing are confirmed before work starts.
An app is not a screen. It is what happens behind it.
Sign-in, overview and a table are visible. The database with history, the connection to your systems, roles, tests and monitoring are not, yet they decide whether the app survives its first year in production.
- 01screens: sign-in, overview, records
- 02behind them: database, API, roles and permissions
- 03tests, backups and error watch
- 04production: deployment, support, SLA
The demo shows i-eduko.cz, the digital platform for a publisher I built. The code on the plate is a demo, not the project source. More work is in the portfolio.
Diagram of an app in four steps: screens, what is behind them (database, API, roles), tests that pass green, and production.
Related work in practice
A concrete project with desktop and mobile previews. No illustrative mockup, just a real website, e-shop or digital product.
I-Eduko
Digital platform for a publisher, Digital platform for the EDUKO publishing house: it manages its digital content and delivers it to students via QR codes in printed textbooks, interactive exercises, 3D models and learning videos.
What you actually get
No fog: what you get, who it fits and where a larger scope begins.
Clear deliverables
- writing down what the application must do before any code is written
- a data model and architecture designed for the expected load
- screen design and the main user journeys
- implementation in Next.js and TypeScript on a testable foundation
- sign-in, roles and permissions as needed
Best fit
- you need your own tool because off-the-shelf software does not fit
- the application has to carry real usage, not just demo it
- you expect it to keep evolving after launch
Not a fit
- you want the cheapest route to a prototype for a single pitch
- the scope changes weekly and nobody wants to settle it
- you expect large-SaaS features in the first version
Scope boundaries
from€3,200
MVP from €3,200 is one main user journey and a basic admin. Production from €7,200 covers roles, integrations, tests and operational monitoring. Enterprise from €16,000 is for applications with their own SLA, audit trail and integration into company systems. Licences, hosting and third-party services are billed separately.
Application packages
Every custom project is unique. The price is finalized after a discovery workshop (90 min, free).
MVP
Ideal for: idea validation with 50-500 users
from€3,200
Delivery 5-8 weeks
- Landing + login + dashboard
- Max 3 main features (CRUD)
- PostgreSQL + auth (Supabase)
- Cloud deployment
- Basic admin section
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- Cloud deployment
- Basic admin section
- Email notifications (Resend)
- 90 days of support
Production
Ideal for: a production SaaS with 500-10k users
from€7,200
Delivery 8-14 weeks
- Everything from MVP
- Role-based permissions (3-5 roles)
- Stripe billing + subscription management
- API for integrations + webhooks
- Email automation (onboarding, retention)
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- API for integrations + webhooks
- Email automation (onboarding, retention)
- Advanced reports + CSV/PDF export
- Audit log + monitoring (Sentry)
- 180 days of support + SLA
Enterprise
Ideal for: a larger system with several roles and company-system integrations · on request, with infrastructure partners
from€16,000
Delivery 14-30 weeks
- Everything from Production
- Přihlášení přes firemní účty (Microsoft, Google)
- Architecture ready for a security audit
- Multi-tenant + custom domains
- Complete audit log + compliance
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- Multi-tenant + custom domains
- Complete audit log + compliance
- API rate limiting + throttling
- 24/7 monitoring + SLA 99.9%
- Dedicated Slack support
From idea to production
Spending hours on manual work a computer should be doing? Sending appointment reminders by hand, retyping orders into your accounting, missing a booking system where a client could book themselves? Or do you have an idea for your own app (SaaS, internal portal, dashboard)? I'll build you a custom tool that does that work for you.
My philosophy: build small, fast, with real users. Don't waste 6 months on a feature nobody wanted. An MVP in 8 weeks gives you the answer. If it works, you expand step by step. If it doesn't, the loss is small.
The stack is conservative and proven: Next.js + React + TypeScript on the frontend, PostgreSQL / Supabase with auth out of the box, Stripe for billing, modern cloud infrastructure for hosting. No experimental frameworks, a mainstream production stack that other developers can pick up too.
What I'll build you
What you concretely get out of the collaboration.
- 01
Bookings & orders
Clients book a slot, a vehicle or a service themselves; you get an admin panel to manage it all. Just like MiQueen or the upcoming sachasport.cz.
- 02
Payments & admin
Payment gateways (Comgate, GoPay, Stripe), orders, invoices. Your own admin account with roles, you manage content and data yourself.
- 03
Automation & integrations
I connect systems that don't talk to each other: orders → accounting, SMS reminders, APIs, Make/Zapier. Manual retyping disappears.
- 04
Apps & dashboards
An internal system, SaaS, B2B portal or a report that fills itself instead of spreadsheets. Next.js + React, scales without a rewrite.
How it works
No unnecessary bureaucracy. Every step has a clear output and deadline, you always see exactly where we are.
- Typically
- 5-8 weeks (MVP)
- Steps
- 4
Consultation
48 hWhat you do by hand, who works with it and what the app must solve. Within 48 h you get the MVP scope, price and timing.
Design
1-2 weeksData model, screens and integrations (payments, accounting, e-mails). You approve a clickable preview, not code.
Development by milestones
4-6 weeksEvery milestone has a staging demo with real data. You see it grow and change direction in time.
Launch and support
30 daysDeployment, training, tracking. 30 days of fixes included, then support by agreement.
Common questions
The ones asked most. Missing something? Write to me, I reply within a few hours.
Yes. For MiQueen I built a custom e-shop with bookings, payments and admin management, the client manages content and orders themselves. For sachasport.cz I'm now finishing a booking system for a rental and service shop, with an admin account that manages and edits reservations. Real projects, not a demo.
From idea to MVP in 8 weeks.
Describe your idea. Within 24 h you'll get an estimate of scope, technologies and timeline + an invitation to a discovery workshop (free, 90 min).