Step 01
The idea
The scope is written down before anything starts: what is included, what is not.
Availableright now
Your mobile app, from the idea to the release on the stores
I design and build mobile applications for iOS and Android, API and database included. One person, from the first screen to the store listing.
- React Native
- Expo
- TypeScript
- NestJS
- PostgreSQL
- Drizzle ORM
- Neon
- Railway
- Cloudflare R2
- Sentry
My method
Four steps, and the last one is the one that counts
Most mobile developers stop at the build. Releasing (signing, certificates, review) is where projects get stuck. That is the step I see through.
Step 02
The design
Flows, screens and data model, approved before the first line of code.
Step 03
The build
The iOS and Android app, the API and the database behind it. Continuous delivery.
Step 04
The stores
Signing, submission, review, then version follow-up.
About
I'm Pierre
I design and build mobile applications for iOS and Android, from the idea to the app being downloadable on the App Store and Google Play.
That covers everything: the app, the API and the database behind it, deployment, and releasing on the stores (signing, certificates, review). A lot of React Native work stops at the build; mine stops when it runs on a user's phone.
I graduated from EPITECH Marseille, master's degree, qualified as an expert in information technology. My first professional experience dates back to July 2021, already on mobile, and it has been the common thread ever since: five years of experience, including nearly three years at Dev-id. Internship, then freelance, then full-time, with a Product Proxy Owner role along the way.
So freelancing is nothing new: I was already doing it in 2023, alongside my studies. I have been fully independent since November 2025, based in Marseille, working remotely, in English as well as French.
Work
What I have shipped
One case study only, and that is deliberate: the apps I build for clients belong to them. Kelenz is my own product, so I can show all of it, from the first screen to the store listing.
Get in touch
Tell me what you want to build
Book 30 minutes
We look together at whether it can be built, how long it takes and what it costs. Free, no strings attached.
Write an email
Rather lay out the context in writing, with your documents? I reply within 24 hours on weekdays. Write to contact@pierrenana.com