Duet Game vs TETHER
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Duet Game
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.
- 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
Read full descriptionHide full description
Enter a mesmerising trance of co-dependence in Duet. The rules are simple: control two vessels in sync, survive against all odds and keep calm. Best, Most Elegant iPhone Games of the Year 2013 - The New Yorker Grand Prize Winner, Best Action, Best Audio - Intel Level Up Best Design, Best Audio - Australian Game Developer Awards Best Design - IGF China PAX 10 & PAX East Indie Showcase Selection Mobile Game of the Year 2013 - Kotaku 4.5/5 - Touch Arcade 4.5/5 - 148 Apps 4.5/5 - App Smile "...few other games are as fun when you succeed." -- The New Yorker "It feels as designed as a raindrop, and just as perfect." -- Ben Kuchera, Polygon "Duet does what the best video games do." -- Kotaku "Highly Recommended." -- Penny Arcade Report "Duet looks hard as nails. And I love it." -- Touch Arcade "Duet is a must-have." -- 148 Apps "Shiel's soundtrack ... is as innovative as the game it scores." -- Jake Cleland, The Vine "Your eyes, ears, and thumbs were built to perform this Duet together." -- Indie Games "...Duet's plaintive and melancholic aesthetic imbues it with a sense of the profound." -- CVG "But while the aesthetic of Duet is familiar, the gameplay is all new." -- Pocket Gamer "It is fantastic." -- Tim Rogers "Duet on iOS. Instant love. Instant." -- Mark Serrels Your survival is dependent on protecting two vessels - they are devices in sync, a dance and song between two entities tethered together in symbiosis. Feel edge of your seat terror where the world around you becomes quiet and numb as all that matters is the game living between your palms -- that is Duet. % NINE CHAPTERS Experience nine chapters of deceptive narrative and nerve-twisting gameplay. Unlock the bonus Survival chapter for endless score chasing delight. Replay any stage to perfect your movements and unlock over 25 Game Center achievements. This is a game that will test you. % EIGHT NEW EPILOGUE CHAPTERS Explore a whole new narrative with all-new game mechanics in our new “epilogue” to Duet. Including over 40 new stages, new narrative and new remix tracks. You will need a new state of mind to complete this experience. % PERFECT GAMEPLAY With air tight controls and gameplay that’s tuned to perfection Duet provides the perfect balance between challenge and pure gaming satisfaction. Touch either side of the screen to twist your vessels and avoid everything in your path. Remember: even that which begins simple can end complex. % HYPNOTIC AUDIO An outstanding handcrafted soundtrack by Melbourne composer and Gotye multi-instrumentalist Tim Shiel. Nine unique and mesmerizingly beautiful compositions ensure an immersive experience for you at every step of your journey, complemented by full in-game vocal narration by Jojo Petrina. % FULLY FEATURED - Full iCloud support - sync your progress across all your devices. - Universal App - play on your new iPhone, iPod touch, iPad and iPad mini. - Compete with Game Center on the leaderboards. % ABOUT KUMOBIUS Selected for the Indie Showcase at PAX Aus and a finalist in both Game Design and Audio for the Freeplay Festival. This is another award-winning title from the team behind Time Surfer & Bean’s Quest. We call Duet a “Hex-like” in honour of Terry Cavanagh’s contribution to the medium of games and exploration of genres. % ABOUT TIM SHIEL Tim Shiel is a composer/producer based in Melbourne. Tim is known to some as Faux Pas, the moniker under which he released a steady stream of constantly shifting electronic music for many years. He is also known for his work as a broadcaster at Melbourne independent radio station 3RRR FM, and for his recent role as multi-instrumentalist in Gotye's live band. % SUPPORT Say hello@kumobius.com we’d love to hear from you! And follow us on Twitter: @kumobius
TETHER
Read full descriptionHide full description
A wall of pure black is already moving in from the left. It is leashed to the furthest point you have ever reached, so the gap only opens while you keep going — stall for a moment and it closes over you. There are no levels here to survive to. There is only the next anchor. TETHER is one button and a real line. When you catch an anchor, the sweet spot is drawn for you: a glowing arc laid over your actual swing circle. Come round a full swing, carry speed into that arc, and let go inside it — that is a Perfect. Speed bursts, time stretches for a beat, and the chain multiplier climbs toward ×10, multiplying distance, grazes and Perfects all at once. Release sloppily and the chain is gone. Every day the world gets one seeded course. Same course in Seoul as in Sao Paulo, plus three daily missions everyone shares. Your own best run comes back as a ghost and runs it beside you, half a second ahead or half a second behind, which is the only opponent that has ever really mattered. • THE VOID — a black wall leashed to your furthest point; hesitate and it swallows you • THE RELEASE ARC — the sweet spot is drawn on your swing circle, not left to feel • CHAIN MULTIPLIER — up to ×10 across distance, grazes and Perfects • DAILY COURSE — one seeded course and three missions, identical for every player on Earth • GHOST — your personal best replays beside you as a rival • FIVE BIOMES — Dusk, Ember, Verdant, Violet and Ash cross-fade as you travel • ENDLESS — the course is generated as you play and never repeats • MOMENTUM PHYSICS — hold to reel in and pump the arc like a playground swing; slack line is free fall • GENERATED, NOT DRAWN — every sprite and every sound is made procedurally. You are a point of light, not a character • 10 SKINS — every one earned by playing, none for sale • 20 LANGUAGES — with full right-to-left support • GAME CENTER — leaderboards and achievements • NO ADS, NO ENERGY TIMERS — play for as long as you like TETHER PRO is one optional purchase. It never touches gameplay, so the leaderboard stays honest. No account, no sign-up. Everything runs on your device.
Screenshots
Verdict
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 (#49 vs unranked) and device support (4 vs 2). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Duet Game | TETHER |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.9 (2.1K ratings) — better | — |
| Positive reviews | 96.9% of reviews | — |
| Number of ratings | 2.1K — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #49 — better | — |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 111 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Kumobius | WON SEOK OH |
Bugs and requests
Duet Game
Reported bugs
2 issues- Inconsistent save point tracking
- Unresponsive controls in later levels
Requested features
4 requests- More levels and challenges
- Level editor to create custom stages
- Ability to adjust gameplay speed
- Randomized obstacle patterns
TETHER
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Duet Game
- Encore Chapters$0.99
- Soliloquy Chapters$0.99
TETHER
- TETHER PRO$4.99









