Work behind this service

Live on the App Store

Own app · iOSLive on the App Store

MUST: See, Eat, Visit

A city companion for Istanbul, Miami and New York: a daily brief with weather and transit status, a map of 1,800+ hand-curated places, an events feed, and an AI concierge whose answers turn into savable multi-stop plans.

  • Expo / React Native, TypeScript, MapLibre and Claude
  • The concierge answers from the app's own curated places
  • English and Turkish, re-themed per city
App Store
Own app · iOS and AndroidLive on both stores

1in46: AI Dream Interpreter

A voice-first dream journal. It interprets each dream against about 6,300 passages of classical dream scholarship, paints dream art, and can turn a dream into a narrated AI film.

  • React Native / Expo, Supabase with pgvector, Claude and RevenueCat
  • English, Turkish, Arabic (right to left) and Spanish
  • On the App Store since March 2026 and Google Play since September 2026
App Store1in46.com
Own app · iOSLive on the App Store

Mawla: Quran, Prayer Times

A daily Islamic companion: location-aware prayer times with adhan notifications, the Quran, a qibla finder, and a voice assistant that answers everyday questions with sourced references.

  • React Native / Expo, Supabase and RevenueCat
  • Turkish and English
  • Marketing site at mawla.app
App Storemawla.app
Own app · iOSLive on the App Store

Zoomi Kids

A learning game for preschoolers with no failure states, no ads and no accounts. It works fully offline and winds down with a goodnight scene when the parent-set session limit is reached.

  • Native Swift and SpriteKit
  • Adaptive difficulty without failure states
  • Parent-set session caps with a gentle wind-down
App Store
Stack

How each app is built

AppBuilt withStoresYear
MUST: See, Eat, VisitExpo / React Native, TypeScript, MapLibre, ClaudeApp Store2026
1in46: AI Dream InterpreterReact Native / Expo, Supabase + pgvector, Claude, RevenueCatApp Store, Google PlayMarch 2026 (iOS), September 2026 (Android)
Mawla: Quran, Prayer TimesReact Native / Expo, Supabase, RevenueCatApp Store2025
Zoomi KidsSwift, SpriteKitApp Store2026
What you can hire for

What an app project covers

Native Swift

SwiftUI and SpriteKit when the app must be fast, offline and small, like Zoomi Kids.

React Native and Expo

One TypeScript codebase for iOS and Android when the app is mostly content and services. 1in46 is on both stores.

AI features

Voice input, assistants grounded in your data, and generated images and video, wired to Claude and other models.

Subscriptions

In-app subscriptions through RevenueCat, as in 1in46 and Mawla.

Localization

English and Turkish, plus Arabic with a right-to-left layout and Spanish in 1in46.

App Store release

Submission and App Store review, then updates after launch.

Questions

Frequently asked questions

Native Swift or React Native?

Native Swift when performance, offline use or a small download matter most, as in Zoomi Kids. React Native with Expo when one codebase should cover iOS and Android, as in 1in46.

Can I see the apps?

Yes. All four are on the App Store under Savas Tutumlu's developer page.

Do you build Android apps too?

Yes, with React Native. 1in46 has been on Google Play since September 2026.

Who handles App Store review?

Savas handles submission and review; all four apps went through it under his developer account.

Related reading

Related services

Design

UI/UX Design

Design by the person who builds it, from a kids' game to ERP screens.

Learn more AI

Chat and Voice Assistants

Assistants in MUST, Mawla and 1in46 that answer from defined sources.

Learn more Development

SaaS Development

Public web products with an API, like Sağlama.

Learn more

Have an app idea?

Describe the one thing the app has to do well on day one. That is where the first version starts.

Discuss your project See all work

Or call (786) 788-1030

Savas Tutumlu

Who builds it

Savas Tutumlu

Founder & CEO, Stratagem Systems

Started the studio in Houston, TX in 2023 and now works from Istanbul. 30 projects shipped since.