# GPS Speedometer vs Sigma

The clearest difference is in-app purchases: Sigma at none against GPS Speedometer's 10. Sigma also leads on ads (none vs shown). GPS Speedometer's advantage is device support (4 vs 2). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. GPS Speedometer sells 9 in-app purchases, starting at $1.99 per 7 days. Sigma asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | GPS Speedometer | Sigma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.5K ratings)](https://appshunter.io/ios/app/gps-speedometer-track-speed/id711323002/reviews)** | — |
| Number of ratings | **1.5K** | — |
| Positive reviews | 65.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 215 MB | 107 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [AppAspect Technologies Pvt. Ltd.](https://appshunter.io/developer/962656494) | [Abdelkader Magri](https://appshunter.io/developer/1758045916) |

## What reviewers say

### GPS Speedometer

[App page](https://appshunter.io/ios/app/gps-speedometer-track-speed/id711323002)

Monitor your speed and track journeys across various activities like driving, cycling, or boating. Features include customizable speed alerts, dash cam recording, parking assistance, and driving performance analysis. Integrates with smartwatches for convenient control and monitoring.

**Highlights:** Speed monitoring (MPH, KM/H, KTS), Customizable speed limit alarms, Journey tracking and history, Dash cam recording with cloud storage, Parking location marking and navigation, Driving performance analysis and score, Smartwatch integration for tracking control

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Subscription | $1.99 | per 7 days |
| Monthly Premium Subscription | $2.99 | per month |
| Monthly Premium Subscription | $5.99 | per month |
| Yearly Premium Subscription | $19.99 | per year |
| Yearly Premium Subscription | $24.99 | per year |
| Speed Dials Premium Access | $4.99 | one-time |
| CarPlay Premium Features | $8.99 | one-time |
| Premium Features Life Time | $39.99 | one-time |
| Lifetime Subscription | $39.99 | one-time |

**What reviewers like**

- 👍 Accurate speedometer
- 🚀 Reliable performance
- 💡 Useful tracking features
- 🔍 Good for verifying vehicle speed
- 👍 Easy to use interface

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🔋 Battery drain issues
- 🔍 Inaccurate speed readings
- 💰 Intrusive ads and paywalls
- 🔇 Interrupts music playback

**Reported bugs**

- Speed display stuck at 0 mph
- Tracking functionality stops mid-trip
- Purchased ad-free version still shows ads

**Requested features**

- Customizable display options
- Trip odometer and history tracking
- Integration with Apple Watch
- Improved visibility in sunlight
- Ability to disable data collection


### Sigma

[App page](https://appshunter.io/ios/app/sigma/id6754206221)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GPS Speedometer free?

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

### Is Sigma free?

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

### Do GPS Speedometer or Sigma have ads?

GPS Speedometer shows ads; Sigma does not.

### Which is updated more often, GPS Speedometer or Sigma?

GPS Speedometer ships an update every 3 weeks, and Sigma every 3 weeks. Most recently, GPS Speedometer was updated on October 21, 2026 and Sigma on October 13, 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.*