# ChronoMaster vs GPS Rally Computer

The clearest difference is price: GPS Rally Computer at $24.99 against ChronoMaster's $64.99. GPS Rally Computer also leads on update cadence (monthly vs every 9 months) and device support (3 vs 1). ChronoMaster's advantage is iOS requirement (9 vs 12.4). On ads, in-app purchases and monetization model there is nothing between them.

ChronoMaster costs $64.99 and GPS Rally Computer $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ChronoMaster ships an update every 9 months, GPS Rally Computer monthly. The most recent releases landed on June 5, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | ChronoMaster | GPS Rally Computer |
| --- | --- | --- |
| Price | $64.99 | **$24.99** |
| Rating | — | **[3.8 (5 ratings)](https://appshunter.io/ios/app/gps-rally-computer/id1210193950/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 4 MB | 2 MB |
| Requires iOS | **9** | 12.4 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BrandsOnSpeed GmbH](https://appshunter.io/developer/431537613) | [MSYapps](https://appshunter.io/developer/458482419) |

## What reviewers say

### ChronoMaster

[App page](https://appshunter.io/ios/app/chronomaster/id431537610)

This app is designed for classic car rally pilots and co-pilots to precisely navigate complex special stages. It offers 1/100s second accuracy for timing and distance, with a graphical interface to manage interlaced stages, average speed controls, and countdown timers.

**Highlights:** 1/100s second precision timing, Graphical interface for complex stages, Acoustic countdown timer, Automatic average speed calculation, Transfer stage data from roadbook, Bilingual interface (English/German)

**Features:** macOS Compatibility

**In-app purchases:** none


### GPS Rally Computer

[App page](https://appshunter.io/ios/app/gps-rally-computer/id1210193950)

This app aids in navigating traditional time-speed-distance (TSD) automobile rallies by simplifying complex computations. It allows for odometer calibration, precise speed tracking, and real-time error correction to help drivers stay on pace.

**Highlights:** Odometer calibration, Precise speed tracking, Real-time error correction, Adjustable clock and distance units, Customizable speed changes, Time and distance recording

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ChronoMaster free?

ChronoMaster costs $64.99, with no in-app purchases.

### Is GPS Rally Computer free?

GPS Rally Computer costs $24.99, with no in-app purchases.

### Do ChronoMaster or GPS Rally Computer have ads?

Neither ChronoMaster nor GPS Rally Computer shows ads.

### Which is updated more often, ChronoMaster or GPS Rally Computer?

ChronoMaster ships an update every 9 months, and GPS Rally Computer monthly. Most recently, ChronoMaster was updated on June 5, 2026 and GPS Rally Computer on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*