Mobile app development services
at a fixed price

An AI-native team that designs, builds and maintains custom mobile apps for iOS and Android. You test an interactive prototype before we fix the price. New apps start from $20,000 with design, backend and the release in both stores, and a focused MVP takes about 8 weeks.

Three Tapptitude developers reviewing an app together at their monitors

From the first workshop
to both app stores.

Mobile app development services cover everything from deciding what the first version should do to keeping the app running after launch: product definition, UX and UI design, native or cross-platform development, backend, QA, the App Store and Google Play release, and maintenance. Tapptitude is a mobile app development agency in Cluj-Napoca, Romania. We've built 150+ web and mobile products over 12+ years for companies in the UK, Western Europe and the US.

Reviewed by

Alex, Technical Director

Last updated:

Mobile app development at a glance

Time to MVP
About 8 weeksA focused MVP in three milestones, with a demo and a build you can install every two weeks.
Pricing
New appfrom $20,000Design, backend, admin panel and both store releasesCode auditfrom $1,000One week, with a prioritized list of fixesMaintenance with SLAfrom $1,500/moUpdates, fixes and new OS versions after launch
Tech
SwiftKotlinReact NativeFlutterSwift and Kotlin for native apps. React Native with Expo or Flutter for cross-platform.
Your team
Technical product managerSenior developer (mobile and backend)Product designerA small senior team working with AI agents.
Experience
150+web and mobile products over 12+ years

Three ways to start

You have an idea for a new app

We decide the first version with you in two or three workshops, design every screen and link them into a prototype you test with real users. Then we fix the price and build it.

You have an app another team built

A one-week code audit, from $1,000, shows what state the code is in and what to fix first. Then we take over releases and maintenance under an SLA, and the audit fee is credited against the first month.

You built a prototype with an AI app builder

If people want to use what you made with Lovable, Bolt or Cursor, we audit it, keep what works, rebuild what won't scale and take it to the App Store and Google Play.

New apps

From the first workshop to both app stores: product definition, UX and UI design, development, QA and the release. Most apps are built from one codebase for iPhone and Android, which costs less than two separate apps. We go native where the product needs it.

Cost

From $20,000

Timeline

MVP in about 8 weeks

Migrations

Move a native iOS and Android pair to React Native or Flutter, or rebuild an outdated app, screen by screen, without stopping releases.

App takeovers

Your agency or developer left and the app still needs releases. We start with a one-week audit, fix what blocks the next release, then take over maintenance or new development.

Cost

Audit from $1,000

Timeline

Audit in 1 week

AI features in an existing app

An assistant, recommendations, search or document processing, agreed with a clear goal and a way to measure it before we build.

Maintenance and new features

After launch, a monthly plan keeps the app updated for new iOS and Android versions and adds features every two weeks. App maintenance with SLA starts from $1,500/month. Maintenance and new features start from $4,050/month. Both have a 3-month minimum.

Cost

From $1,500/month

Timeline

Monthly, 3-month minimum

Start A Project

Native or cross-platform: which is right for your app?

Most business apps work best as one cross-platform app for iOS and Android. Native is the better choice when the app depends on heavy 3D or AR, on the newest OS features on day one, or on deep hardware integration. We build both, so the recommendation follows your product, not our preference.
CriterionCross-platform (React Native, Flutter)Native (Swift, Kotlin)
One codebase for iOS and Android
Yes
No, two apps
Cost of the first version
Lower
Higher
Best for
Most business, consumer and internal apps
3D, AR, heavy media, new OS features on day one
Native modules when needed
Yes
Built in
Our page

Still weighing native against cross-platform?

How we work

AI drafts specs, code and tests, so we move fast. People decide what to build, review every change and answer for every release.

1. Product definition

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Two or three 2-hour workshops, online or with us in Cluj. We map the business, the users and the competition, and decide what version one needs. Output: user flows and a detailed spec.

2. Design and prototype

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Every screen designed with your brand in Figma and linked into an interactive prototype you test with real users. Output: the scope, fixed price and timeline, in writing. You decide whether to go ahead with the build.

3. Custom mobile app development in three milestones

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The first milestone is the core flow the idea depends on, so it works early. A demo call and a build you can install every two weeks. Developers work with AI coding agents that also write automated tests. Every change goes through code review.

4. Launch

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The third milestone ends with the app live on the App Store and Google Play, with analytics and crash reporting built in and the launch KPIs we recommended set up from day one.

5. Maintain and grow

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A monthly plan with an SLA: updates for new iOS and Android versions, critical issues answered within 4 business hours and fixed within 1 business day, above 99% crash-free sessions.

AI-native delivery more product, sooner

We rebuilt how we deliver around AI coding agents. The result isn't a cheaper version of the same work: it's a smaller senior team that ships more of your product, sooner, for a fixed price.

A smaller senior team

An MVP used to take six people: a product manager, an iOS and an Android developer, a full-stack developer for the backend and admin panel, a designer and a QA engineer. Today a technical product manager and a senior developer who covers both mobile and backend deliver the same scope with our product designer. Fewer people means fewer hand-offs, and it's why new apps now start from $20,000.

Specs from your workshops

AI turns the notes from our definition workshops into specs and user stories. The team checks every one before it goes into the scope you sign.

Code written with AI agents, reviewed by people

Our developers build with Claude Code and Codex. Every change is reviewed by a senior developer before it is merged.

Tests written as we build

Automated tests are written with AI alongside each feature, and the team tests every build itself, so quality is part of each milestone, not a phase at the end.

Where we don't use AI

Product decisions, UX and UI design and the final code review stay with people. Your code and data are never used to train AI models.

Industries we build mobile apps for

Mobile apps we've designed and built

Planning
a mobile app?

Tell us what you're building. We'll come back with how we'd approach it, a first estimate and the questions to answer before development starts.
Ștefan Suciu

Our mobile tech stack

Swift icon

Swift

Apple's language for native iOS apps, signing and App Store releases.

SwiftUI icon

SwiftUI

Apple's UI framework for native iOS screens.

Kotlin icon

Kotlin

The language of native Android apps, signing and Google Play releases.

React Native icon

React Native

Meta's framework for iOS and Android apps from one TypeScript codebase, rendering native components. We use it with Expo.

Flutter icon

Flutter

Google's framework for iOS and Android apps from one Dart codebase.

TypeScript icon

TypeScript

Typed JavaScript for the React Native app, the web app and the Node.js backend.

Dart icon

Dart

The language of Flutter apps, compiled to native code for iOS and Android.

Node.js icon

Node.js

Backend runtime for the APIs behind the apps.

Firebase icon

Firebase

Authentication, push notifications, analytics and crash reporting for both platforms.

Sentry icon

Sentry

Crash and performance monitoring for the apps and the backend.

Swift icon

Swift

Apple's language for native iOS apps, signing and App Store releases.

SwiftUI icon

SwiftUI

Apple's UI framework for native iOS screens.

Kotlin icon

Kotlin

The language of native Android apps, signing and Google Play releases.

You're In Great Company

5.0

G2Sam Robinson

Sam Robinson

Co-Founder, BOND

"They listen to the client's direction but also do an excellent job of being a real thought-partner in the process and uncovering 'blind spots' in the product without being explicitly asked to do so. They also hold themselves to an exceptionally high standard, and we have run our platform without any outages since launch."

5.0

G2Gregory Walfish

Gregory Walfish

Co-Founder & CEO, Xposure Music

"If you're looking for a product partner instead of a traditional dev shop, Tapptitude is your team. They give feedback, recommendations and know how to build the proper tech stack. They do a robust product planning before starting development which helps align everyone."

5.0

G2Pawel Majak

Pawel Majak

Venture Partner, Nordstar

"I have worked on both bigger and smaller projects with the Tapptitude team and have only positive things to say. What I like is that they always think about their work holistically and rarely anything is surprising. They always go the extra mile and care about their Clients."

5.0

ClutchAndrew Smith

Andrew Smith

CEO, OnTapp

"Tapptitude is a very good development agency. I’ve been delighted with the results and their adherence to our timeframe and budget. Looking at competitor products on the market, we’ve managed to produce something better in a shorter period of time."

Clients that trusted us

150+Products built
$250M+Raised by our clients
10+Industries
13+Years in business
Glorify
Wellory
Holler
Oxwash
Vaha
Ometria
BOND
Tenor
Shebah
Reverse Health

Mobile app development FAQs

  • Custom mobile app development at Tapptitude starts from $20,000 for a focused MVP on iOS and Android, including design, backend, an admin panel and the release in both app stores. If you already have the designs and a backend or API, the mobile apps alone start from $15,000. The price grows with the scope: more user types, payments or links to other systems make the first version bigger. You see the fixed price for your scope before development starts, after you've tested the prototype. Two prices are fixed up front: a code audit from $1,000 and maintenance with SLA from $1,500 per month.

  • A focused MVP takes about 8 weeks of development, in three milestones fixed in the scope, with a demo and a build you can install every two weeks. Product definition and design come before that, under their own contract and timeline. Larger products take longer, and you get the timeline in writing together with the fixed price.

  • Yes. We define the product with you, design it and build an interactive prototype you test with real users. Once the screens are agreed, we write the scope and fix the price for it. Definition and design are a separate contract, so you can decide not to go ahead with the build. If something changes the agreed scope during development, we tell you the cost before we do it.

  • Yes. Our developers work with AI coding agents such as Claude Code and Codex, AI drafts specs from our workshops and writes automated tests, and people review every change. Because we work at a fixed price, the time AI saves goes to you: a smaller senior team, a lower starting price (new apps from $20,000) and more of your product in each milestone. We don't sell hours, so there is nothing to discount.

  • Every change is reviewed by a senior developer before it is merged, covered by automated tests and built on the same architecture and conventions we use on every project. Your code and data are never used to train AI models. If you want a second opinion, our one-week code audit, from $1,000, reviews any codebase, ours included.

  • Look for four things: a fixed price you see before development starts, a prototype you can test with real users before you commit to the build, case studies with numbers you can check, and a clear plan for after launch. As a mobile app development agency, we work exactly this way: you test an interactive prototype before we fix the price, our case studies show results such as 16M downloads for Glorify and 12k+ paid subscriptions for Reverse Health, and every app can stay with us under a maintenance plan with an SLA from $1,500/month.

  • For most business apps, cross-platform with React Native or Flutter: one codebase for iOS and Android, a lower cost for the first version and native modules where a feature needs them. Native Swift and Kotlin are the better choice for heavy 3D or AR, or apps that need the newest OS features on day one. See the comparison above and when not to go for cross-platform development.

  • Yes, it's one of the most common ways clients start with us. A one-week code audit, from $1,000, shows what state the code, dependencies and build setup are in. Then we take over the repositories, the build pipeline and the store accounts and continue with maintenance with SLA or new development. The audit fee is credited against the first month.

  • Yes. We audit what the AI app builder produced, keep what works, rebuild what won't scale or isn't secure, add a proper backend, user accounts and payments where needed, and release it to the App Store and Google Play. The audit tells you what that takes before you commit to a build.

  • The app goes live with analytics and crash reporting built in. After that, a monthly plan with an SLA keeps it updated for new iOS and Android versions, fixed and stable: critical issues get a response within 4 business hours and a fix within 1 business day, and we keep the app above 99% crash-free sessions. Maintenance with SLA starts from $1,500 per month and maintenance with new features from $4,050 per month, both with a 3-month minimum.

  • Our team works 9:00-18:00 EET/EEST from Cluj-Napoca, Romania, which covers most of the UK and Western European working day. You get a demo call every two weeks, a shared Jira board and a dedicated Slack channel.

Learn more about mobile app development

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