# GPS Lap Timer vs QUAD

The clearest difference is review sentiment: QUAD at 100% against GPS Lap Timer's 64%. QUAD also leads on in-app purchases (none vs 3) and ads (none vs shown). GPS Lap Timer's advantage is update cadence (weekly vs every 2 weeks). On price, monetization model, device support and iOS requirement there is nothing between them.

Both are free to download. GPS Lap Timer sells 3 in-app purchases, starting at $3.99 per 3 months. QUAD asks for nothing beyond the download.

GPS Lap Timer ships an update weekly, QUAD every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | GPS Lap Timer | QUAD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 63.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 49 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takao Ichimura](https://appshunter.io/developer/1474061593) | [SYNSETECH LTD](https://appshunter.io/developer/6792617372) |

## What reviewers say

### GPS Lap Timer

[App page](https://appshunter.io/ios/app/gps-lap-timer/id1666125803)

Accurately measure lap and sector times for race tracks using your iPhone's GPS.  This app employs proprietary algorithms for precise timing without external receivers. It saves approximately 10,000 laps and supports numerous circuits worldwide.

**Highlights:** Accurate lap and sector timing, Uses iPhone GPS, Proprietary measurement algorithms, Saves up to 10,000 laps, Supports numerous global circuits, Stand-by mode for pocket use

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Measurements | $3.99 | per 3 months |
| Unlimited Measurements | $5.99 | per year |
| Unlimited measurements | $9.99 | one-time |


### QUAD

[App page](https://appshunter.io/ios/app/quad-g-forcemeter-laptimer/id6792617370)

This app uses your phone's sensors and GPS to provide real-time lap timing, sector splits, and vehicle dynamics data like G-forces and four-wheel weight transfer. It also includes a data logger for post-drive analysis and alerts for understeer and oversteer.

**Highlights:** GPS lap and sector timing, Four-wheel load monitoring, Real-time G-G diagram, Understeer/oversteer alerts, Data logging and playback, Customizable UI themes and units

**In-app purchases:** none


## Frequently asked questions

### Is GPS Lap Timer free?

GPS Lap Timer is free to download, with in-app purchases available.

### Is QUAD free?

QUAD is free to download, with no in-app purchases.

### Do GPS Lap Timer or QUAD have ads?

GPS Lap Timer shows ads; QUAD does not.

### Which is updated more often, GPS Lap Timer or QUAD?

GPS Lap Timer ships an update weekly, and QUAD every 2 weeks. Most recently, GPS Lap Timer was updated on November 3, 2026 and QUAD on November 5, 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.*