Most mileage trackers are cross-platform apps that run the same code on iOS and Android. Cross-platform is convenient for the developer but expensive for the user. Bigger install, more battery drain, less native polish.
Why cross-platform is heavier
Cross-platform frameworks (Flutter, React Native) ship their own runtime alongside your app code. The runtime alone is 30-50 MB before any feature code. The runtime is a translation layer between developer code and the OS, which means battery and network calls are routed through extra layers.
What native iOS gives you
- Smaller install. No bundled cross-platform runtime. TruMile is 19.8 MB vs 122-183 MB for cross-platform competitors.
- Direct API access. CoreLocation, CoreMotion, and CloudKit are called directly. Cross-platform apps go through a bridge layer that adds latency and energy cost.
- Energy-efficient location APIs. Apple's SignificantLocationChange and CLVisit APIs are optimized for low battery use. Cross-platform apps often fall back to continuous high-accuracy GPS because the bridge layer does not expose the low-power APIs cleanly.
- Native polish. Animations, scrolling, accessibility, and Dynamic Type all behave the way iPhone users expect. Cross-platform apps approximate but rarely match.
What you give up
No Android version. For households with mixed iOS and Android users, native iOS does not solve the cross-device problem. (TruMile is iOS only today.)
Why this matters for mileage specifically
A mileage tracker runs in the background all day. Battery use compounds. Cross-platform apps that drain 15-20% battery per day vs native apps that drain 3-5% is a meaningful daily difference, multiplied by 365 days. Over a year, that is hundreds of hours of additional charging cycles.
What iOS-native means in practice for TruMile
- Built on SwiftUI (Apple's modern UI framework, not UIKit legacy)
- SwiftData with CloudKit sync (Apple's data + cloud stack)
- CoreLocation called directly with iOS 17+ optimizations
- CoreMotion for stop detection
- App Intents for Siri Shortcuts
- WidgetKit for home-screen widgets
- No third-party tracking SDKs
iPhone-native, energy-efficient, 19.8 MB. Start free with TruMile →
Track every business mile.
40 auto trips a month, free forever. Switch from any tracker with a one-tap CSV import.
Download free on the App Store