# GLP vs Master

The clearest difference is price: Master at Free against GLP's $14.99. Master also leads on update cadence (monthly vs every 2 months). GLP's advantage is in-app purchases (none vs 3) and iOS requirement (13.1 vs 16.0). On review sentiment, ads and device support there is nothing between them.

Master is free to download; GLP costs $14.99 up front. Master sells 3 one-off in-app purchases. GLP asks for nothing beyond the download.

GLP ships an update every 2 months, Master monthly. The most recent releases landed on September 14, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | GLP | Master |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Positive reviews | **44.4% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 46 MB |
| Requires iOS | **13.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dominik Reichert](https://appshunter.io/developer/710755006) | [Filippo Gozza](https://appshunter.io/developer/954580932) |

## What reviewers say

### GLP

[App page](https://appshunter.io/ios/app/glp-timer-countdown-laptimer/id899741570)

This app automates lap timing for racing events like rallies and circuit races. It uses GPS to track your position, displays remaining time, and automatically detects laps, eliminating the need for manual stopwatches and co-drivers.

**Highlights:** GPS-based countdown lap timer, Automatic lap detection, Manual or GPS-based finish line marking, Stores lap times for retrieval, Supports driver changes for Nürburgring GLP, Optional external GPS receiver support

**In-app purchases:** none


### Master

[App page](https://appshunter.io/ios/app/master-of-regularity/id1369749472)

This app provides essential tools for classic and sport classic uniformity rallies, including synchronized clocks, stopwatches, countdowns, and tripmasters. It allows for multiple tests simultaneously and saves log files that can be emailed, opened as tables, or viewed on maps. An optional Head-Up-Display function projects mirrored data onto a windshield.

**Highlights:** Synchronized clock with GPS/atomic time, 1/100 second stopwatch and countdown, Tripmaster and speedmeter, Multiple simultaneous tests, Log file saving and sharing, Optional Head-Up-Display, Display sharing with second device

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version for one month | $5.99 | one-time |
| Full version for 6 months | $18.99 | one-time |
| Full version for one year | $27.99 | one-time |


## Frequently asked questions

### Is GLP free?

GLP costs $14.99, with no in-app purchases.

### Is Master free?

Master is free to download, with in-app purchases available.

### Do GLP or Master have ads?

Neither GLP nor Master shows ads.

### Which is updated more often, GLP or Master?

GLP ships an update every 2 months, and Master monthly. Most recently, GLP was updated on September 14, 2026 and Master on September 12, 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.*