
Mobile app · 2026
Sophia : Culture Générale
Education
A general-knowledge app in 10 minutes a day: lessons written by teachers, quizzes, themed learning paths and built-in subscriptions.
- Native iOS app
- Subscriptions
- Paywall
Sophia, Caval’up, Moodie and ScanEat: 4 apps designed, built and published on the App Store, rated 4.7★ from 1,941 reviews. We put that experience, from paywall to Apple review, to work on your idea. MVP from €7,900 excl. VAT.
4.71,941 App Store reviews
You benefit from what we learnt launching real apps, rated by real users.
4.7★1,941 App Store reviews
4 apps on the App Store, averaging 4.7★ from 1,941 reviews, including Sophia: 4.7★ from 1,902 reviews. You work with someone who knows what users love.
6–10weeks
A scoping workshop, prioritised features and a first version released fast, so you can test your market before investing more.
A single React Native codebase for both stores, or native Swift when the experience calls for it. Performance and polish on a par with the best apps.
Paywall, subscriptions, payments, AI recommendations, image recognition: the building blocks that make an app useful and profitable.
Designed, built and published: subscriptions, AI, geolocation, payments. Rated 4.7★ on average across 1,941 reviews.
Got an app idea? Let’s talk for 30 minutes.
No hidden line items, no extras discovered halfway through. Everything is written into the quote.

You talk directly to the person who designs and builds your project. No salesperson, no middleman, and I’m still reachable after launch.
An MVP to test your market, or a full app ready to scale. Firm quote after scoping.
A first version published on the App Store and Google Play to test your idea with real users.
€7,900excl. VAT
An app ready to scale: payments, subscriptions, AI features, admin dashboard.
€14,900excl. VAT
Pay in 3 interest-free instalments: 30% on order, 30% when the design is approved, 40% at launch.
Compare all plansIn writing, in every quote
Fixed price, no surprises
A detailed, firm quote. No “overrun” discovered at the end of the project.
You own everything
Source code, domain name, content and access: in your name once the balance is paid.
One point of contact
You talk directly to the person who builds your website. Reply within 24 business hours.
Revisions until it fits
Two rounds of revisions included at every stage, until the result feels like you.
Short stages, test builds on your phone and a firm quote before we start.
Your idea, your users, your budget. You leave with an honest view on feasibility and the best way to start.
Priority features, user journeys and key screens. You approve the prototype and receive a firm quote.
Test builds on your own phone as we go: you watch the app take shape and give feedback at every step.
Store listing, screenshots, compliance with Apple’s and Google’s rules: we handle publishing end to end.
Analytics, user feedback, new features: the app keeps improving with its users.
Another question? Simon replies personally, within 24 business hours.
An MVP (a first version live on the stores) starts at €7,900 excl. VAT, a full app with subscriptions, AI and a back-office at €14,900 excl. VAT. The budget mainly depends on the number of screens, the integrations (payments, AI, back-office) and the target platforms. The quote is fixed after scoping.
Yes: 4 apps are live on the App Store, with an average rating of 4.7★ from 1,941 reviews. Sophia (general knowledge, 4.7★ from 1,902 reviews), Caval’up (horse rental), Moodie (AI film recommendations) and ScanEat (recipes from a photo of your fridge).
Allow 6–10 weeks for an MVP and 3–5 months for a full app, including Apple and Google review.
Publishing is included: we prepare the listing, screenshots and store compliance from the start of development, and we handle the conversation with the review team if the app is rejected.
You do. The source code and the App Store and Google Play accounts are in your name, and you are free to develop the app further with anyone you like.
Yes. We can sign a non-disclosure agreement before the scoping call, and nothing from your project is reused elsewhere.
Tell us about your project in 2 minutes. You get a mock-up of your home page within 5 days, free, with a fixed price. If you don’t like it, you pay nothing.
or call Simon on 06 38 98 89 09