# Speedometer One vs Tachys

The clearest difference is iOS requirement: Speedometer One at 17.0 against Tachys's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Speedometer One 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.

## The numbers

| Metric | Speedometer One | Tachys |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 1 MB | 10 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sypnapse LLC](https://appshunter.io/developer/1881159577) | [Juraj Krivda](https://appshunter.io/developer/1216484883) |

## What reviewers say

### Speedometer One

[App page](https://appshunter.io/ios/app/speedometer-one/id6759846345)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Speedometer One Pro | $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 One free?

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

### Is Tachys free?

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

### Do Speedometer One or Tachys have ads?

Neither Speedometer One nor Tachys shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*