Industries
Subscription applications.
A product that bills monthly has its own class of problem: trials, cancellations, refunds, accounting, and app stores that review every release from scratch.
The hard part of this industry
Taking the payment is the small part. The hard part is subscription state: who is on trial, who cancelled but still has access, who did not pay, who paid and then asked for a refund. That state has to read the same in the app, in billing and in the report, or somebody gets a service they did not pay for, or pays for one they do not get.
- Trials, cancellation and refunds, with a clear rule about who sees what.
- Card payment with strong customer authentication.
- Release into the App Store and Google Play, with a review for every version.
- Figures that have to match to the cent when somebody compares them with a bank statement.
What we built
Staxo is a mobile app for learning to trade, built in Flutter for iOS and Android from one codebase, with a free and a paid tier and subscribers who pay monthly.
Staxo News is an automated daily market brief that assembles and publishes itself, and recovers on its own in most cases without anyone stepping in.
What the product usually needs
These are the items a subscription product does not work without in practice.
- User accounts, sign in and password recovery.
- Access tiers: free, paid, trial.
- Billing, invoices and refunds, with records that survive an audit.
- Notifications that bring a user back without overdoing it.
- Retention measurement, not just download counts.
App stores
Apple and Google review every release from scratch, and approval of one version means nothing for the next. So we plan releases with review time built in and keep a demo account ready, because most rejections come down to the reviewer not seeing what they need to see.
From the portfolio
From this industry.
Mobile app
VisitStaxo
Crypto trading simulator for iOS and Android. A virtual portfolio priced off the real market, so people learn to trade without risking their own money. Courses with quizzes, XP and levels, leagues and leaderboards, and a full history of every trade.
Read the case study
Web platform
VisitStaxo News
A daily crypto digest in five languages. Each morning an AI reads dozens of sources, picks the stories that actually moved something and rewrites them in plain language, without jargon or hype. Subscribers get the summary in their inbox and know where the market stands in a few minutes.
Questions
FAQ
Do you build for both iOS and Android?+
Yes, from one codebase in Flutter. That means one build and one thing to maintain instead of two, while still feeling native on both platforms.
How are subscriptions billed?+
By card, with the strong customer authentication European rules require. Subscription state lives in one place, so the app, the billing and the report cannot drift apart.
Who publishes the app to the stores?+
We do, on your accounts. The Apple and Google accounts stay in your name, so the app and its users remain yours even if the engagement ends.
Can we start with a smaller version?+
We recommend it. The first release covers what the product makes no sense without, goes to real users, and only then do you decide what comes next, while change is still cheap.
Contact
Have an idea? Let's talk.
Tell us about the project. For smaller ones we send an analysis and a quote within a few days. For larger and more complex work we agree the scope of that analysis with you first.