Why We're Building an Offline-First Fitness Tracker
Gym basements, subway commutes, and mountain trails — the main argument for offline-first architecture.
Feature
The Problem
Most fitness trackers require a constant internet connection. But reality is: gyms are often in basements with poor or no signal.
We experienced this ourselves: you open the app, tap "add set" — and wait for a spinner. Or data is lost because the request never reached the server.
Our Approach
In Spodi for iOS, all data is stored locally on the device. This means:
- The app works instantly — no spinners
- Data is never lost — everything saves on your phone
- Sync is automatic — when network appears, changes go to the server
How Sync Works
When network becomes available, Spodi automatically sends changes to the server. Only new data is transferred — saving bandwidth and battery.
Sync happens on app launch, returning from background, and after every saved set. You don't need to do anything — it all works in the background.
Ready to level up your training?
Join thousands of athletes who track smarter with Spodi.