# Speedometer & GPS Data vs Tachys

The clearest difference is update cadence: Tachys at every 4 days against Speedometer & GPS Data's every 5 months. Speedometer & GPS Data's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Speedometer & GPS Data sells 1 one-off in-app purchase and Tachys sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Speedometer & GPS Data ships an update every 5 months, Tachys every 4 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Speedometer & GPS Data | Tachys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/speedometer-and-gps-data/id6740280549/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 1 MB | 10 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Adam Feher](https://appshunter.io/developer/1462164182) | [Juraj Krivda](https://appshunter.io/developer/1216484883) |

## What reviewers say

### Speedometer & GPS Data

[App page](https://appshunter.io/ios/app/speedometer-and-gps-data/id6740280549)

This navigation app provides real-time speed tracking in km/h or mph. It also displays altitude, GPS coordinates, accuracy, and city name on a map for precise location data.

**Highlights:** Real-time speed tracking (km/h or mph), Altitude display, GPS coordinates (latitude, longitude), Accuracy and city name, Map view for navigation

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Speedometer | $2.99 | one-time |


### Tachys

[App page](https://appshunter.io/ios/app/tachys-gps-speedometer/id6789868572)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tachys Pro | $4.99 | one-time |


## Frequently asked questions

### Is Speedometer & GPS Data free?

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

### Is Tachys free?

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

### Do Speedometer & GPS Data or Tachys have ads?

Neither Speedometer & GPS Data nor Tachys shows ads.

### Which is updated more often, Speedometer & GPS Data or Tachys?

Speedometer & GPS Data ships an update every 5 months, and Tachys every 4 days. Most recently, Speedometer & GPS Data was updated on October 24, 2026 and Tachys on October 26, 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.*