ViewGuessr
One video. How many views?
A web game, GeoGuessr-style, where you guess a YouTube video’s view count. Play solo or in real-time multiplayer with a 6-letter code. Fast, animated and playable right in the browser.
Mobile app & web studio · Strasbourg
PENRA
PENRA turns ideas into custom mobile apps and websites. From the first sketch all the way to launch.
(Studio)
An independent studio that designs and buildsmobile apps and websitesthat don’t go unnoticed.
Every project is treated as a real product: obsessed over in every detail, fast, and built first for the people who will actually use it.
(Work)Drag / scroll →
Selected work
Gluten, Not For Me
Scan. Check. Eat easy.
Point your camera at a product’s barcode and get a verdict in under a second: green “gluten-free”, red “contains gluten” with the offending ingredient highlighted, or yellow “may contain” when there is a risk of traces. Built for people with celiac disease, powered by Open Food Facts, with Nutri-Score and iCloud history.
AllDays
Your habits, one day at a time.
A habit-tracking app: create your routines, set goals and reminders, and follow your progress with stats, a calendar and streaks to stay motivated every day.
Mac+
Bring your Mac desktop to life.
A macOS app to transform your desktop: 15 GPU-animated scenes, video or image backgrounds, 44 palettes, 12 widgets and 52 folder-icon patterns. Light, private, handcrafted.
Tack+
Your Mac, at the edge of the screen.
A panel that opens at the edge of the screen and the notch: music, Messages, Calendar, clipboard, a file shelf, four tools and an optional local AI assistant. Push the cursor against the edge and it’s open. One-time purchase, no subscription.
adma
Timeless bags, a store to match.
A full redesign of the adma online store: a clean, elegant e-commerce experience to showcase their bags and accessories. Smooth navigation, refined product pages, mobile-first.
capsul
Fewer tokens, same answer.
A command-line tool that sends Claude and Codex only the context your task needs, never the whole repo, under a token budget you set. Savings that are measured, not promised: the plan you already pay for stretches much further.
(Work)
Got an idea? Let’s talk.
(Capabilities)
What we do
- 01
Mobile apps
Native iOS and cross-platform (SwiftUI, Flutter). From idea to launch on the App Store.
- 02
Sites & web apps
Marketing sites, web apps and modern back-ends (React, Next.js). Fast, animated, custom.
- 03
Art direction
Identity, UI/UX and motion. A coherent art direction, from the logo to the last animation.
- 04
Consulting & launch
Product strategy, deployment and follow-up. I stick around after you go live, too.
(Method)
How it works
01
Talk
We discuss your idea, your users and your goals.
02
Design
Mockups, art direction and technical architecture.
03
Build
Clean code, fast iterations, you follow progress live.
04
Launch
Go live, App Store, and long-term support.
07Products shipped
iOS · WebPlatforms
2025Studio founded
∞Ideas next
(Contact)
Got an idea?Let’s talk.
Mobile app, website, redesign or just a question. Drop me a line: I reply fast, in person, and we figure out together how to bring your project to life.
Available for new projectsCe site existe aussi en français ↗