# Tether vs GPS Speedometer Mph

The clearest difference is in-app purchases: Tether at none against GPS Speedometer Mph's 3. GPS Speedometer Mph's advantage is update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GPS Speedometer Mph sells 3 in-app purchases, starting at $4.95 per 7 days. Tether asks for nothing beyond the download.

Tether ships an update monthly, GPS Speedometer Mph every 4 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Tether | GPS Speedometer Mph |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 14 MB | 47 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Mykola Rudenko](https://appshunter.io/developer/1683884186) | [Tawhid Joarder](https://appshunter.io/developer/1558428520) |

## What reviewers say

### Tether

[App page](https://appshunter.io/ios/app/tether-parking-timer-location/id6751962404)

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

**In-app purchases:** none


### GPS Speedometer Mph

[App page](https://appshunter.io/ios/app/gps-speedometer-mph-speedgo/id6762985100)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpeedGo Weekly | $4.95 | per 7 days |
| SpeedGo Annual | $19.49 | per year |
| SpeedGo Lifetime | $34.99 | one-time |


## Frequently asked questions

### Is Tether free?

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

### Is GPS Speedometer Mph free?

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

### Do Tether or GPS Speedometer Mph have ads?

Neither Tether nor GPS Speedometer Mph shows ads.

### Which is updated more often, Tether or GPS Speedometer Mph?

Tether ships an update monthly, and GPS Speedometer Mph every 4 days. Most recently, Tether was updated on October 30, 2026 and GPS Speedometer Mph on October 30, 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.*