# Reaction Duel vs Tether Up!

The clearest difference is review sentiment: Reaction Duel at 100% against Tether Up!'s 27%. Reaction Duel also leads on monetization model (ad-supported vs free with in-app purchases). Tether Up!'s advantage is iOS requirement (17.6 vs 26.0). 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.

Reaction Duel ships an update every 5 days, Tether Up! every 3 days. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Reaction Duel | Tether Up! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 37 MB | 32 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hojin Noh](https://appshunter.io/developer/1877101562) | [IBUKI YOSHIDA](https://appshunter.io/developer/1856209051) |

## What reviewers say

### Reaction Duel

[App page](https://appshunter.io/ios/app/reaction-duel-2-player/id6760186572)

Engage in thrilling Wild West-style duels to test your reaction speed against friends. Compete in real-time to see who can lift their phone first. Simple rules, intense moments, and a global ranking system make this a fun party game.

**Highlights:** Real-time duels with friends, Easy room code invitation, Thrilling reaction speed gameplay, Fast and intuitive controls, Global ranking system, Party game fun

**In-app purchases:** none


### Tether Up!

[App page](https://appshunter.io/ios/app/tether-up/id6814103261)

This cooperative climbing action game connects two players with a single rope as they ascend endlessly. Master the tension and timing of the rope to reach new heights, with no checkpoints or defined goals. Fall and retry as many times as needed, with the sky changing color to mark your progress.

**Highlights:** Cooperative climbing gameplay, Rope mechanics for movement and interaction, Endless ascent with changing environments, Retry system after falling, Online and local multiplayer, Variety of environmental puzzles and hazards

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

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Duel free?

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

### Is Tether Up! free?

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

### Do Reaction Duel or Tether Up! have ads?

Both Reaction Duel and Tether Up! show ads.

### Which is updated more often, Reaction Duel or Tether Up!?

Reaction Duel ships an update every 5 days, and Tether Up! every 3 days. Most recently, Reaction Duel was updated on October 3, 2026 and Tether Up! on October 8, 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.*