Cross-platform mobile app
One codebase for iOS and Android, built in React Native or Flutter and published to both app stores.
GradaxEuropean companyOrder outright
Founded 2014·Built and operated in Europe·2 to 16 weeks
About this service
We build mobile apps from a single codebase that runs on both iPhone and Android, using React Native or Flutter. That keeps development and maintenance cost close to one app instead of two. We take the app from design to store submission, including login, data storage, push notifications and the review process each store requires.
One codebase, and where that saves money
Building separate native apps for iOS and Android means two codebases, two sets of developers and two lots of bugs to fix for every feature. Cross-platform frameworks such as React Native and Flutter let one codebase run on both. For most business apps, that cuts development and maintenance cost significantly, and users cannot tell the difference.
The savings are largest on apps built mostly from screens, forms, lists and data from a server, which describes most business apps. They shrink for apps that depend heavily on device-specific features, complex animation or high-performance graphics. We review your feature list before recommending, and will say if native suits your app better.
Store review is part of the project
A finished app is not a released app. Apple and Google both review submissions, and each has its own requirements: privacy disclosures, account deletion options, in-app purchase rules, content ratings, screenshots for every device size. First-time submissions are often rejected for something small, which adds days to the launch.
We build to the store guidelines from the start, prepare the listings and privacy information, and handle the submission and any responses to reviewers. Approval is the stores' decision, but most rejections come with a specific reason we can fix and resubmit quickly.
What you get
Everything below is in the price. Nothing here is an upgrade.
- Technical plan and feature list
- Working app for iOS and Android
- Backend or API connection
- Store listings and submission
- Source code and documentation
What changes
- One codebase running on both iOS and Android
- Core features working offline or with clear messages when the connection drops
- Apps submitted to the App Store and Google Play and approved
- Code in a repository you own, with build instructions
How it runs
Plan
Features, data and the build order agreed in writing.
Build
Developed in sprints, with test builds on your phone every week or two.
Test
Tested on a range of real iOS and Android devices.
Release
Store listings prepared and apps submitted for review.
Compare the sizes
The standard price for each size. Extras are priced beside it, not hidden behind a call.
| Included | Prototype app€5602 to 3 weeks | MVP app€1,3606 to 10 weeks | Full app€2,86010 to 16 weeks |
|---|---|---|---|
| Up to five screens from your designs | Included | Included | Included |
| Mock or simple data | Included | Included | Included |
| Test builds on iOS and Android | Included | Included | Included |
| Source code | Included | Included | Included |
| User accounts and login | Not included | Included | Included |
| Connection to your backend or a managed backend | Not included | Included | Included |
| Push notifications | Not included | Included | Included |
| Store submission | Not included | Included | Included |
| In-app purchases or payments | Not included | Not included | Included |
| Offline data and sync | Not included | Not included | Included |
| Simple admin panel | Not included | Not included | Included |
| 30 days of post-launch support | Not included | Not included | Included |
| Order | Select | Select | Select |
Add what you need
Choose the size
Add what you need
Your total€1,360
ContinueThe standard price, plus whatever you add. Confirmed in writing before anything starts; nothing is charged until you accept it.
Questions
React Native or Flutter?
Both are mature. React Native suits teams with JavaScript or web experience; Flutter gives very consistent visuals on both platforms. We recommend based on your team and features.
Does cross-platform mean lower quality?
For most business apps, users cannot tell the difference. Apps that rely heavily on device hardware or complex graphics can benefit from native development.
Will Apple approve the app?
We build to the store guidelines and handle the review, but approval is Apple's and Google's decision. Rejections usually come with a reason we can fix.
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One-timeiOS app developmentA native iPhone app in Swift, built to Apple's guidelines and taken through App Store review.from €830one-time
Order it
Standardised enough to order on its own. The price is confirmed in writing before anything starts.