# G-Box Dyno — Power, Torque & Acceleration

> Power, Torque & Acceleration (iPhone/iPad app by RaceMeasure LLC.)

- Source: https://appshunter.io/ios/app/g-box-dyno/id6806042080 (this page in markdown: same URL + `.md`)
- Developer: [RaceMeasure LLC](https://appshunter.io/developer/6791293871)
- Category: Sports, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 43 MB
- Languages: American English, French (France), German (Germany), Russian
- Released: 2026-08-28
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/g-box-dyno/id6806042080/reviews.md

## What is G?

G-Box Dyno turns your iPhone into a focused vehicle-performance measurement tool.

Measure 0-60, 0-100, 0-160, 0-200, 80-120 and 100-200 acceleration. Run a single-gear Dyno pull to estimate power and torque, save high-rate telemetry, and compare repeat runs on clear graphs.

CHOOSE THE BEST SENSOR SOURCE

Use iPhone GPS and motion sensors, a compatible Bluetooth or Wi-Fi OBD-II adapter, or an external GPS receiver. G-Box Dyno automatically prioritizes a connected high-rate source and records source quality with every run.

BUILT FOR REPEATABLE TESTING

- Vehicle profiles with mass and gear calibration
- Power and torque curves versus engine RPM
- Automatic shift detection and useful run trimming
- Atmospheric data for consistent comparisons
- CSV telemetry and saved run history
- Portrait and landscape analysis views
- Optional rear-camera video with synchronized acceleration overlays

FREE TO START

Create one vehicle and complete three measurements with the standard 0-60 and 0-100 presets. Upgrade once to G-Box Dyno Pro for unlimited measurements, vehicles, advanced acceleration ranges, comparisons and video overlays. No subscription. No ads.

SAFETY AND MEASUREMENT NOTICE

Use only on a closed course or private road where legal. Configure the app while parked, mount iPhone securely, and never interact with the screen while driving. Performance results are estimates and are not certified dynamometer measurements. Accuracy depends on sensor quality, calibration, vehicle data, road grade, traction and weather.


## Version history (last 2 releases)

### 1.0.1 — 2026-08-30

Added popular metric and imperial acceleration presets, including distance runs with intermediate splits and trap speeds. Improved iPhone GPS/IMU speed estimation and acceleration timing, added intermediate 0–60 results to 0–100 runs and video overlays, and improved run video completion, audio, and results layout.

### 1.0 — 2026-08-28

No release notes.

## More apps by RaceMeasure LLC

- [G-Box Lap Timer](https://appshunter.io/ios/app/g-box-lap-timer/id6791293869)
- [Poker Anywhere: Hold’em](https://appshunter.io/ios/app/poker-anywhere-holdem/id6796505743)

All apps by RaceMeasure LLC: https://appshunter.io/developer/6791293871

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*