# key2ski vs TennisOn

The clearest difference is iOS requirement: key2ski at 13.0 against TennisOn's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

key2ski ships an update every 2 months, TennisOn monthly. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | key2ski | TennisOn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 88 MB | 87 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SKIDATA GmbH](https://appshunter.io/developer/1613495044) | [Taoweb Consulting](https://appshunter.io/developer/922012019) |

## What reviewers say

### key2ski

[App page](https://appshunter.io/ios/app/key2ski/id6460821642)

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

**In-app purchases:** none


### TennisOn

[App page](https://appshunter.io/ios/app/tennison/id6478971730)

**In-app purchases:** none


## Frequently asked questions

### Is key2ski free?

key2ski is free to download, with no in-app purchases.

### Is TennisOn free?

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

### Do key2ski or TennisOn have ads?

Neither key2ski nor TennisOn shows ads.

### Which is updated more often, key2ski or TennisOn?

key2ski ships an update every 2 months, and TennisOn monthly. Most recently, key2ski was updated on September 18, 2026 and TennisOn on September 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.*