# Duet Game vs TETHER

The clearest difference is price: TETHER at Free against Duet Game's $2.99. TETHER also leads on update cadence (fortnightly vs every 3 months). Duet Game's advantage is chart position (#54 vs unranked) and device support (4 vs 2). On ads and in-app purchases there is nothing between them.

TETHER is free to download; Duet Game costs $2.99 up front. Duet Game sells 2 one-off in-app purchases and TETHER sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Duet Game ships an update every 3 months, TETHER fortnightly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Duet Game | TETHER |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.9 (2.1K ratings)](https://appshunter.io/ios/app/duet-game/id634235735/reviews)** | — |
| Number of ratings | **2.1K** | — |
| Positive reviews | 96.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#54** | — |
| Size | 111 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kumobius](https://appshunter.io/developer/449069247) | [WON SEOK OH](https://appshunter.io/developer/1459611310) |

## What reviewers say

### Duet Game

[App page](https://appshunter.io/ios/app/duet-game/id634235735)

**Currently charting:** #54 Top Paid · Casual, #97 Top Paid · Action (US App Store)

Control two synchronized vessels, navigating a challenging and hypnotic trance. Survive against all odds through nine chapters of deceptive narrative and nerve-twisting gameplay. Unlock bonus content and perfect your movements for endless score-chasing delight.

**Highlights:** Control two synchronized vessels, Nine chapters of narrative gameplay, Bonus Survival chapter, Over 25 Game Center achievements, Eight new epilogue chapters, Air-tight controls, Hypnotic handcrafted soundtrack

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Encore Chapters | $0.99 | one-time |
| Soliloquy Chapters | $0.99 | one-time |

**What reviewers like**

- 🎨 Beautiful visuals
- 🎶 Immersive soundtrack
- 🧠 Challenging gameplay
- 👍 Satisfying sense of achievement
- 🤖 Thoughtful narration

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔊 Music sometimes cuts out
- 💰 Encore chapter locked behind paywall

**Reported bugs**

- Inconsistent save point tracking
- Unresponsive controls in later levels

**Requested features**

- More levels and challenges
- Level editor to create custom stages
- Ability to adjust gameplay speed
- Randomized obstacle patterns


### TETHER

[App page](https://appshunter.io/ios/app/tether-swing-and-fly/id6795148869)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TETHER PRO | $4.99 | one-time |


## Frequently asked questions

### Is Duet Game free?

Duet Game costs $2.99, and also offers in-app purchases.

### Is TETHER free?

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

### Do Duet Game or TETHER have ads?

Neither Duet Game nor TETHER shows ads.

### Which is updated more often, Duet Game or TETHER?

Duet Game ships an update every 3 months, and TETHER fortnightly. Most recently, Duet Game was updated on October 29, 2026 and TETHER on October 25, 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.*