Cosmos Tutorial
Our own product, live on the App Store. Updated
A multi-tenant platform for coaching institutes, covering students, fees, attendance and a parent app, designed and shipped solo.
Visit the live sitecosmostutorial.com · App Store
The build
A full multi-tenant SaaS: an admin portal for institutes and an Expo parent app on iOS and Android. Each institute's data is kept separate by 52 row-level security policies across 18 database functions. It also generates AI progress reports, serves study materials through signed links and sends push notifications. Built solo in about six months and live on the App Store.
What stands out
Data isolation done properly: 52 row-level security policies, separate staging and production, Sentry monitoring and a full CI/CD pipeline, all set up by one person.
Where it is now
Live on the App Store, with the parent app on iOS and Android.
Details
- Client
- Cosmos Tutorial · B2B SaaS
- Year
- 2024 to now
- Discipline
- Product, Full-Stack, Mobile, Infra
- Built with
- Next.js 14, Expo React Native (iOS + Android), Supabase · 52 RLS policies, PostgreSQL, Gemini AI (reports), Expo Push, GitHub Actions · EAS · Vercel, Sentry
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