Comparison

Duet Game vs SubX

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read 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

About

SubX

Pilot a research submarine shrunk to cellular size to combat a deadly virus. Destroy viral defenses to learn about and upgrade your vessel. Survive increasingly difficult levels with various enemy types and unlock new abilities.

Highlights
  • Cellular-level virus combat
  • Submarine upgrades and abilities
  • Over 50 challenging levels
  • Multiple enemy types
  • In-game currency system
  • Leaderboards
  • Vibrant visuals
Read full description

You are a pioneering scientist on the verge of identifying a new, extremely deadly viral strain that poses a risk to humanity. To better analyse the virus, you decide to man your research submarine and shrink yourself down to a cellular level to gain a better understanding of the virus itself. To learn about the virus, you must destroy its defence. The more defenses you destroy, the more you learn about the virus which will allow you to upgrade your submarine. SubX will test your reflexes and co-ordination as you dodge and destroy the aggressive viral defences. Your mission: To survive as long as you can against the virus. But be warned, it will not hold back, and neither must you. SubX features more than 50 levels, each level will progress in difficulty as you fight off multiple waves and types of viral enemies. The longer and more effectively you combat the virus defence, the more you begin to understand it, which allows you to upgrade your submarine with various abilities to assist in your mission. Features: - Hours of addictive game play - Vibrant visuals and realistic physics system - Multiple enemy types - In game currency system - Upgradable weapons and abilities - Leader boards - Facebook and relay integration - In-app purchases for those who prefer a head start

Screenshots

Duet Game4 screens
SubX4 screens

Verdict

The call

The clearest difference is price: SubX at Free against Duet Game's $2.99. SubX also leads on update cadence (every 4 weeks vs every 3 months) and iOS requirement (7.0 vs 13.0). Duet Game's advantage is ratings volume (2.1K vs 1) and chart position (#52 vs unranked). On rating, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

SubX is free to download; Duet Game costs $2.99 up front. Duet Game sells 2 one-off in-app purchases and SubX sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Duet Game against 5.0 for SubX. That said, the two scores are not equally well evidenced: Duet Game has 2.1K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 97% of Duet Game's written reviews are positive against 100% of SubX's.

UpkeepUpdate frequency

Duet Game ships an update every 3 months, SubX every 4 weeks. The most recent releases landed on November 1, 2026 and October 10, 2026 respectively.

Scorecard5 real differences · 6 level
Duet Game versus SubX: the parameters behind the verdict, then further details
ParameterDuet GameSubX
Price$2.99Free — better
Rating4.9 (2.1K ratings)5.0 (1 ratings) — better
Positive reviews96.9% of reviews100.0% of reviews — better
Number of ratings2.1K — better1
Update frequencyEvery 3 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#52 — better—
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad, iPod
Requires iOS13.07.0 — better
Further details — not scored
Size111 MB135 MB
Age rating4+9+
DeveloperKumobiusMobile App City Pty Ltd

Customer experience

Duet Game

All ratings2,039 ratings
Positive97.4%
Neutral1.1%
Negative1.5%
Written reviews1,858 reviews
Positive96.9%
Neutral1.3%
Negative1.8%

SubX

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

SubX

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Duet Game

One-time2
  • Encore Chapters$0.99
  • Soliloquy Chapters$0.99
6 purchases

SubX

One-time6
  • Remove ads$0.99
  • 1000 coins$1.99
  • 2500 coins$3.99
Show 3 more
  • 5000 coins$5.99
  • 10000 coins$9.99
  • 50000 coins$36.99

Questions

Is Duet Game free?
Duet Game costs $2.99, and also offers in-app purchases.
Is SubX free?
SubX is free to download, with in-app purchases available.
Which has better reviews, Duet Game or SubX?
SubX is rated higher. Duet Game averages 4.9 out of 5 from 2.1K ratings, while SubX averages 5.0 from 1 ratings.
Do Duet Game or SubX have ads?
Neither Duet Game nor SubX shows ads.
Which is updated more often, Duet Game or SubX?
Duet Game ships an update every 3 months, and SubX every 4 weeks. Most recently, Duet Game was updated on November 1, 2026 and SubX on October 10, 2026.

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