Home services · 2024
FIX: app for home services and tradespeople
A modern platform connecting customers with professional tradespeople: a mobile app, web portal and AI-powered search.
React NativeExpoNext.js
Nova Zagora, Bulgaria
Mobile app development in Nova Zagora
Development of a mobile app for iOS and Android from a single codebase, with a server, admin panel, payments and publication in App Store and Google Play; the code and accounts are yours.
Building a mobile app is a project for a Bulgarian company or someone with an idea who wants an iPhone and Android app from a single codebase, with the server and admin panel it needs to work. Based on our quotes, an app costs €200-€15,000: the lower end is a screen on top of a ready-made server, while the upper end is a platform with payments, chat and notifications; FIX took six months, Avanta four, and the first prototype of KinetiX AI was on the client’s phone after two weeks. Four of our apps are in the App Store: FIX, Heal Fit, Avanta and the LiftexPro technicians’ app; the code, server and app store accounts remain yours.
We work from Sofia with clients across Bulgaria: remotely, and on site when the project requires it.
Price
€200-€15,000
Based on 98 of our quotes as of 14 August 2026
What you get
- One codebase, iPhone and Android
React Native and Expo: one app for both platforms instead of two teams and twice the cost.
- Server and admin panel included in the project
API, database and an admin panel for managing users, content and payments. Without them, the app is just a screen.
- Payments and subscriptions
Card payments through Stripe, as in FIX and Avanta, or subscriptions through the App Store and Google Play, as in KinetiX AI. We tell you upfront where each commission is paid.
- Notifications, chat, maps, camera
Push notifications and SMS reminders like in ZapaziChas, chat like in FIX, offline maps like in Offroad Buddies, and AI through the camera like in KinetiX AI.
- Published through your accounts
We create the App Store and Google Play accounts in your name, prepare the listing and take it through Apple’s and Google’s review process.
- The code, server and database are yours
We hand over the code repository, server and access credentials. You can continue with another team.
We have built
Fitness and health · 2026
KinetiX AI: fitness app with an AI coach
A mobile app that watches through the phone’s camera, counts reps and corrects your form by voice, in real time, without the video ever leaving the device. App, backend, admin panel and website built from scratch.
React NativeExpoTypeScript
Health and rehabilitation · 2026
Heal Fit: iOS app for therapeutic exercise
iOS app for therapeutic and rehabilitative exercise: video workouts in Bulgarian, progress series and registration for live sessions.
React NativeExpoiOS
How we work
- 1You describe the app
Who will use it, what it needs to do and how it will make money: payment, subscription, advertising or internal use.
- 2Questions and price range
We ask about the screens, users, payments and data, and in our first reply we tell you which end of the range you fall into.
- 3Prototype on your phone
The main screens with your content, which you open on your own phone before making a decision.
- 4Written proposal
Screens, features, server, exact price, timeline, ownership of the code and what is not included.
- 5Built in stages with demos
We show progress at every stage through TestFlight and test on real phones.
- 6Launch and the first weeks
We submit the app for review, handle Apple and Google’s feedback and monitor the first users.
Questions and answers
Mobile app development in Nova Zagora: how much does it cost?
Mobile app development in Nova Zagora: €200-€15,000. The exact price is included in the written proposal.
Mobile app development in Nova Zagora: how long does it take?
It depends on the scope, which we set out in the proposal. For comparison, here are examples from our portfolio: KinetiX AI: in progress, since 08.2026, FIX Bulgaria: 6 months, Avanta: 4 months.
Who owns the code, server, database and app store accounts?
Yours. The code is in a repository in your name, the server and database are in your account, and the app is published from your App Store and Google Play accounts. We hand everything over with the project and explain how to release updates without us.
Mobile app development in Nova Zagora: what happens after launch?
If you wish, we can maintain the project for €100-€350 per month. We specify what maintenance includes in the quote.
Can the app accept payments, send SMS and work with maps and GPS?
Yes. FIX and Avanta accept payments through Stripe, KinetiX AI sells subscriptions through App Store and Google Play, ZapaziChas sends SMS and email reminders, and Offroad Buddies records routes on offline MapBox maps.
Is the subscription paid inside the app, and what is the commission?
Digital content and subscriptions for app features go through App Store and Google Play, which take a commission on every sale. Physical services, such as a tradesperson or a salon appointment, can be paid for through Stripe at a lower fee. We tell you what is allowed in your case before preparing the quote.
How long does it take, and what will I receive in the meantime?
A prototype of the main screens takes two to three weeks, as with KinetiX AI. A complete app with a server takes four to six months, as with Avanta and FIX. Each stage ends with a version in TestFlight that you can open on your own phone.
Do I need a server, or can the app work on its own?
Almost always. This is where the users, data, payments and notifications live. We build it together with the app or connect the app to your existing system.
Can we start with iPhone only and add Android later?
Yes. Heal Fit is iOS-only. The code is shared, so the Android version does not have to be written from scratch; it can be tested and published when you decide.
What does maintenance and future changes include?
The stores change their rules every year, and the app needs to be updated to remain published. Maintenance is a separate monthly line in the quote: updates for new iOS and Android versions, server monitoring and minor changes. We estimate new features separately.
Does the price include VAT?
The price in the quote is final. Our company is not VAT-registered, so no VAT is charged on it.
