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★★★★★
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Improves reliability when adding and syncing fuel log entries, including rapid updates from the app, widget, and Watch.
Most outboards and portable tanks have no fuel gauge you can trust. This app gives you an approximate one — and it gets smarter every time you fill up. Tap START when the engine fires and STOP when you're done. The app tracks engine run-time and burns fuel down as you go, so you always know roughly how much is left and how far you can push it. HOW IT WORKS • Big START / STOP run timer — survives a crash, force-quit, or reboot without losing a running session • Learns your burn rate (gallons per hour) automatically from each fill-to-full — no setup, and you can override it • Shows fuel left, % remaining, range, and estimated time left — tap the gauge to switch the readout • Pick a modern ring gauge or a classic needle dial ON YOUR HOME SCREEN • A widget shows the fuel ring with a START/STOP button — no need to open the app • A Live Activity puts the live timer, fuel, and a STOP button on the Lock Screen and Dynamic Island • The ring drains on its own — fuel is computed from time, so there's no background battery drain EVERY TRIP, LOGGED • Record the GPS route, distance, and speed of each run and see the track on a map • Link runs across a fill-up to view an entire outing together while keeping each run independent • Find photos taken during your trip and browse them with their saved locations — photos stay in your library • Full history of every run, fill, and correction — edit or void any entry; nothing is ever truly deleted • Lifetime engine hours for maintenance tracking • Apple Watch companion with the same gauge and a START/STOP button on your wrist BEYOND THE WATER The same fuel math works for generators, RVs, and other fuel-burning engines — anything with a tank, a runtime, and no gauge you'd trust. HOW ACCURATE IS IT? It's an estimate, not a sensor. Fuel left = tank size − (run time × gallons-per-hour). Treat it as a dependable backup gauge and planning tool — not a replacement for keeping an eye on your actual tank.