Our methodology for mobile app development
A proven method, from idea to App Store release.
We support you at every stage of your iOS and Android mobile app, from the idea to the store release and later updates, through a cycle of continuous innovation (discovery / design / delivery).
Concept, mobile design and architecture
We support you from defining the features to creating screens built for mobile, including a solid technical architecture for your app.
01Project study
The project study covers the analysis of your users and competing apps, advice on the scope of the first version, and the writing of the functional specifications (user stories) within the functional and design brief.Start your project02Mobile design & prototyping
Design covers persona and on-the-go usage research, visual identity, screen mockups following iOS and Android conventions (UX/UI design), wording, and an interactive prototype to try directly on a phone.03Technical architecture
Technical design covers the choice of technology (Flutter, or native Swift and Kotlin), the architecture of the app and its backend (UML diagrams, APIs, database), offline mode and push notifications where needed, and the project initialization.
Development, testing and fixes
We support you from programming your app to testing it on real phones, including the adjustments and fixes needed before its release.
04iOS & Android development
Programming covers the development of the app for iOS and Android, its back-office and APIs, along with mobile-specific optimizations (smooth screens, load times, battery and data usage, secure exchanges, etc.).05Technical acceptance (MOE)
MOE acceptance covers technical testing (integration, components, data) and functional testing on a selection of phones and iOS and Android versions (feature conformity, interfaces, performance, stress tests, etc.). Any anomalies detected are fixed.06Client acceptance (MOA)
MOA acceptance covers functional testing carried out by you and your testers on your own phones, using test builds distributed through TestFlight and Google Play Console, to validate the app and make the final adjustments.
Release, training and maintenance
We support you from onboarding to the store release, then with the security, updates and maintenance of your app over the long term.
07Training & support
Training and support cover a complete walkthrough of your app's admin console (back-office), such as user and content management or data consultation. We also provide a PDF document and support for any questions.08Store release
Once your app reaches the maturity of the targeted version, we prepare its store listings and submit it for Apple and Google review until it is published on the App Store and Google Play. We then carry out an initial verification and apply a 6-month corrective maintenance period included (free of charge).09Security, updates & maintenance
Security and maintenance cover the supervision of your app (crash reporting, 24/7 cloud monitoring), its compatibility with every new iOS and Android version, technology watch, and corrective, preventive and evolutive maintenance (time-and-materials or fixed-fee).
Step-by-step
tracking, all the way
to the stores.
Step-by-step tracking, all the way to the stores.
From design to release on the App Store and Google Play, your Project Manager ensures rigorous tracking through daily check-ins, and stays available for any question about your app.
The best technologies for your application.
We master the best services and technologies to develop, maintain and scale your mobile application.
Cut your app's cost by 40% thanks to our 50 modules of code augmented by AI.
Cut your app's cost
by 40% thanks to our
50 modules of code
augmented by AI.
We build your application at prices 40% below the market average, thanks to our 50 modules that are ergonomic, intuitive and fully customisable, augmented by AI.
Let's discuss
your application
project.Let's discuss your application project.
Describe your project. Our team replies within 24 hours with free technical scoping, along with a clear estimate of costs and timelines. No commitment.
- Reply within 24 hours from a project manager
or engineer.Reply within 24 hours from a project manager or engineer. - Technical scoping and quote, with no fees.
- No commitment, your data stays
confidential.No commitment, your data stays confidential.
Monday to Saturday · 9am to 6:30pm
hello@kosmos-digital.com
Paris · Lyon · Marseille · Nice · Geneva
Your company may qualify for a tax credit equal to 20% of the costs linked to developing its solution.