Mobile & Wearable Apps
Stop fighting the cloud. Build mobile apps that actually work for your users.
You're building for the devices people carry everywhere — smartphones, tablets, Apple Watches, fitness trackers. But you're still stuck with infrastructure that breaks the moment users step into a subway tunnel or board a plane.
These devices are powerful computers. Why are you still dumping everything into the cloud?
Source's edge-first data infrastructure changes that. With DefraDB, your apps gain a fully embedded, verifiable database that runs natively on-device, supports real-time peer-to-peer sync, and eliminates the need for server-side complexity. It's the easiest way to build offline-first, secure, and collaborative experiences — with no compromise.
Your users expect apps to work everywhere — but handling intermittent connectivity, sync conflicts, and offline state is a nightmare
Cloud-first architecture means latency, downtime, and zero user control over their own data
You're building backends when you'd rather be building features
Real-time sync is a nightmare of race conditions, conflicts, and edge cases
Privacy regulations turn every data flow into a compliance headache
You didn't become a mobile developer to become a backend engineer. But that's what the current stack forces you to do.
What if your app just... worked?
DefraDB gives you a real database that runs directly in your mobile and wearable apps.
No more "the app needs internet to work." No more building sync logic from scratch. No more choosing between user privacy and app functionality.
Here's what changes:
True offline-first
Your app works perfectly whether users are on WiFi, cellular, or airplane mode
Automatic P2P sync
Data flows directly between users and devices — no servers required (but you can add them if you want)
GraphQL queries
Query your local database exactly like you'd query any GraphQL API
Conflict-free by design
Multiple users editing the same data? CRDTs handle merges automatically
User-owned data
End-to-end encryption and granular permissions mean users control their information
Time-travel debugging
See exactly what happened to any piece of data, when, and why
What This Actually Means for Your Development
You save weeks of development and debugging
Run your full data layer in the app itself
Cut infrastructure and DevOps overhead — no sync service to build or maintain
Fast, responsive UIs powered by local data access
Zero-trust architecture means every update is signed and verified
GraphQL queries and schemas reduce boilerplate and increase consistency
Works with React Native, Flutter, Swift, Kotlin, and whatever you're already using
Built for the realities of mobile and wearable devices:
Small memory footprint
Runs on older devices and Apple Watches without breaking a sweat
Delta-based sync
Minimizes data usage so you're not burning through users' cellular plans
Field-level permissions
Granular access and sharing controls that actually work
Time-travel queries
Implement undo/redo and versioned views without custom logic
Zero-knowledge proofs
Verify data claims without exposing sensitive content
Compiles to WASM or native code
Deploy anywhere your app runs