Web and mobile app development.Still working when the signal drops.
DEET Studio is a software and AI studio in Lagos, Nigeria. We design and build web apps, iOS and Android apps, dashboards and internal tools for businesses, government offices and startups. Our mobile apps work offline and sync when the signal returns, and at handover the code, designs and logins are yours.
Apps we build
Designed and built here from the first sketch, and tested on real phones.
Mobile apps
iOS and Android from one React Native and Expo codebase, with orders and forms saved on the phone until the signal returns.
Web apps
Products people log in to, and portals that make public services easier to use.
Dashboards and internal tools
Admin panels, dashboards and back-office tools your team uses every day.
Backends and APIs
One typed API for your apps, partners and agents, documented so the next developer can use it without a phone call.
UI/UX design
Interfaces people get right on the first try, with every state designed: empty, error and offline too.
Apps that earn their storage spaceon a crowded phone.
Offline-first, so a dead zone never eats an order, with size, battery and data budgeted like money.
- SQLite on the phone, with background sync and conflict resolution.
- Push through FCM and APNs, with SMS or WhatsApp as the fallback.
- Typed, versioned APIs over Postgres, with slow work in background jobs.
- Payments as a state machine with idempotency keys and verified webhooks: a triple tap is still one payment.
- k6 load tests past the crowd you expect, so the day you trend is a good problem.
- Encryption, least privilege and audit logs, designed around the Nigeria Data Protection Act 2023.
Say your reps sell on the road.
They log orders in the app with no signal, and each order waits safely on the phone. When the bars come back, the orders sync to your system without a duplicate, and your dashboard catches up.
How it starts
- Tell Alma what you need. She writes it up as a one-page brief, and a person on the team reads it.
- The team comes back with a real number before any work starts. Alma never quotes a price. People do that.
- You get a working first version you can click. We finish what we start, then hand you the keys.
Questions about apps
How much does it cost to build an app?
It depends on what you're building, so we don't guess in public. Tell Alma what the app has to do, and the team comes back with a real number before any work starts.
Do you build for both iOS and Android?
Yes. We build with React Native and Expo, so one codebase serves both, and we test on real phones, budget Androids included.
Will the app work without internet?
Yes, if the work calls for it. Data is saved on the phone first and syncs the moment the signal returns, without duplicates.
Can the app take payments?
Yes. Cards, transfers, USSD and virtual accounts through Paystack, Flutterwave or Monnify, with each payment verified and reconciled, so nobody gets charged twice.
What happens to the app when everyone shows up at once?
We prove it before launch: we load-test past the crowd you expect, caches and queues take the wave, and we watch it scale on the day.
Who owns the app and its code?
You do. At handover the code, the designs and every login are yours, and we can also work alongside your own team.