Comparison

OCO vs DEEMO II

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

Head to head
About

OCO

Engage in a captivating one-touch puzzle-platformer with over 7000 levels. Master simple controls to navigate challenging environments, create your own levels, and enjoy a unique audio-visual experience. Compete in daily challenges and strive for perfect solutions.

Highlights
  • Simple one-touch controls
  • Over 7000 challenging puzzles
  • Level editor and sharing system
  • Daily challenges
  • Minimalist design
  • Procedurally-generated soundtrack
Features
Read full description

“OCO is an exceptionally clever one-touch puzzle-platformer” 8/10 Pocket Gamer “Gloriously addictive and intelligent puzzles” 8/10 Touch Arcade Immerse yourself in the beautiful audio-visual world of OCO Use simple one-touch controls to launch, rush, crash, glide, warp, and hang as you solve over 7000 fast-paced platforming puzzles FEATURES • Simple one-touch controls • Complex challenging puzzles • Precision platforming • 7000 hand-selected player-created levels • Create and share levels using OCO jpg levels system • Beautiful minimal design • Procedurally-generated soundtrack for every level • Built-in editor • Daily challenges • 'Discord' community • ‘Perfect solution’ challenges for all levels • 46 achievements AWARDS • Finalist 'Pocket Gamer People’s Choice Award', 2020 • Runner-up ‘Big Indie Pitch’, Develop, Brighton, 2018 • Finalist ‘Very Big Indie Pitch’ Pocket Gamer Connects, London, 2017

About

DEEMO II

Embark on a musical fantasy adventure in a world threatened by destructive rain. Play rhythm-based music charts to clear the rain and uncover the secrets of a mysterious kingdom. Explore, interact with characters, and enjoy a captivating story with stunning visuals and voice acting.

Highlights
  • Emotional story exploration
  • Rhythm and adventure gameplay
  • 120+ songs including DLC
  • Interact with 50+ characters
  • Storybook graphics and artstyle
  • Movie-quality animated scenes
Read full description

Just in time for Rayark's 10th anniversary comes a sequel to their classic IP, DEEMO. A kingdom created through music faces an uncertain future after a monster called 'The Ancestor' plagues the land with a destructive 'Hollow Rain'. This dangerous rain causes anyone it touches to 'bloom', turning into a flurry of white flower petals and ultimately vanishing from existence. DEEMO II follows Echo, a girl who has bloomed but mysteriously re-appeared, and Deemo, an enigmatic station Guardian, as they journey through this rain-soaked world in hopes of finding a way to save it. Features: ▲A Mysterious and Emotional Story: Why did 'The Composer', the elusive being who created this world, suddenly abandon it? Why and how did Echo bloom and then come back to life? Accompany Echo as she uncovers the secrets behind these questions, journeying to uncover the truth and save the world. ▲A Combination of Rhythm and Adventure: Explore Central Station with Echo, interacting with your surroundings as you get to know the many station residents while discovering clues and 'Charts', magical pieces of music with the power to clear away Hollow Rain. As Deemo you'll play those Charts, putting your musical skills to the test in fun and challenging rhythm sections, ultimately moving the story forward. ▲30 Core Songs + DLC Song Packs for a Total of 120+ Tracks: Composers from around the world, including Japan, Korea, Europe and the Americas, have created an eclectic array of tracks for DEEMO II with an emphasis on acoustic instrumentation. Genres include Classical, Jazz, Chill Pop, J-Pop, and more. Infectious, emotive melodies will give music lovers dozens of fast favorites, and creative, syncopated rhythms will make sure rhythm-game aficionados have plenty to sink their teeth into. ▲Make Friends with Over 50 Station Residents: Central Station is full of characters with their own personalities and stories. As Echo, you can chat with them as they walk about Central Station, living their lives, opening paths to different topics depending on the situation. As you talk with them and get to know them, you'll start to feel like you're part of an eccentric new community. ▲Storybook Graphics and Artstyle: DEEMO II marries hand-drawn backgrounds with 3D models and a meticulous attention to detail that will make you feel like you're caught in a storybook, or an anime come to life. ▲Movie-Quality Animated Scenes: DEEMO II is full of high-quality anime cutscenes, fully voiced by professional Japanese voice actors. Pair that with music composed by DEEMO and Sdorica vets, and you've got an audio and visual treat. Rayark is well-versed in rhythm-game production, with popular titles like Cytus, DEEMO, Voez, and Cytus II under their belt. They are well-known for mixing fun and fluid rhythm gameplay with visual flair and deep storylines, providing full, rewarding experiences to get lost in. ***COMPATIBILITY*** Requires iOS 11.0 or later Compatible with Phone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 12, iPhone 12 mini, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 13, iPhone 13 mini, iPhone 13 Pro, iPhone 13 Pro Max, iPad Pro (2nd Generation) 12.9-inch, iPad Pro (2nd Generation) 10.5-inch, iPad Pro (3rd Generation) 11-inch, iPad Pro (3rd Generation) 12.9-inch, iPad Pro (4th Generation) 11-inch, iPad Pro (4th Generation) 12.9-inch, iPad Air (4th Generation), iPad mini (6th Generation)

Screenshots

OCO4 screens
DEEMO II4 screens

Verdict

The call

The clearest difference is ads: DEEMO II at none against OCO's shown. DEEMO II also leads on rating (4.8 vs 4.6). On price, review sentiment, ratings volume and update cadence 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

Both are free to download. OCO sells 8 one-off in-app purchases and DEEMO II sells 43 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DEEMO II holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 2.4K and 3.7K respectively. Written reviews complicate that: 73% of OCO's written reviews are positive against 68% of DEEMO II's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

OCO ships an update every 5 weeks, DEEMO II every 2 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 9 level
OCO versus DEEMO II: the parameters behind the verdict, then further details
ParameterOCODEEMO II
PriceFreeFree
Rating4.6 (2.4K ratings)4.8 (3.7K ratings) — better
Positive reviews73.0% of reviews — better67.8% of reviews
Number of ratings2.4K3.7K — better
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#146#115 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.2
Further details — not scored
Size113 MB3.5 GB
Age rating4+4+
DeveloperSPECTRUM48 LIMITEDRayark International Limited

Customer experience

OCO

All ratings2,367 ratings
Positive92.5%
Neutral3.6%
Negative3.9%
Written reviews196 reviews
Positive73.0%
Neutral9.2%
Negative17.9%

DEEMO II

All ratings3,740 ratings
Positive95.7%
Neutral1.8%
Negative2.5%
Written reviews658 reviews
Positive67.8%
Neutral10.6%
Negative21.6%

User reviews

OCO

From 2.4K App Store ratings

What we love

  • 👍 Smooth gameplay
  • 🎨 Visually appealing
  • 🎵 Great music/sound design
  • 🧠 Challenging puzzles
  • 🔓 Minimal ads

Room to improve

  • 🐛 Frequent crashes/bugs
  • 💰 Paywalls/in-app purchases
  • 🤢 Can cause motion sickness
  • 🔍 Restart level button hard to access
  • 🕰️ Perfect time scores don't make sense

DEEMO II

From 3.7K App Store ratings

What we love

  • 👍 Great mechanics
  • 🎨 Beautiful visuals and animations
  • 🎶 Captivating music and soundtrack
  • 💡 Engaging story and characters
  • 🤗 Relaxing and immersive experience

Room to improve

  • 💰 Expensive in-app purchases
  • 🕰️ Slow progression without spending money
  • 🔒 Limited free content
  • 🐛 Performance issues and crashes
  • 🤔 Confusing monetization model

Bugs and requests

OCO

Reported bugs

4 issues
  • Game crashes on startup after updates
  • Slow mode issue prevents level uploads
  • Levels sometimes can't be opened
  • Losing progress/data after updates

Requested features

5 requests
  • Add different beat/music options
  • Allow liking levels without completing them
  • Improve level saving/loading
  • Add more block types (traps, flippers, etc.)
  • Bring back online features

DEEMO II

Reported bugs

3 issues
  • Frequent crashes and white screen issues
  • Touch input not always recognized
  • Compatibility problems on newer devices

Requested features

4 requests
  • More free songs and content
  • Improved event system and rewards
  • Better camera controls and navigation
  • Optimization for older devices

In-app purchases

8 purchases

OCO

One-time8
  • NO ADSFree
  • x 2000 bits$0.99
  • x 5000 bits$0.99
Show 5 more
  • Remove ads$1.99
  • x 8000 bits$2.99
  • OCO pro$2.99
  • x 30000 bits$4.99
  • x 100000 bits$9.99
43 purchases

DEEMO II

One-time43
  • Event Bundle E$1.99
  • Event Bundle AZ$2.99
  • Event Bundle CT01$3.99
Show 40 more
  • Event Bundle DT01$3.99
  • Event Bundle IT$4.99
  • Event Bundle IU$4.99
  • Event Bundle IV$4.99
  • Event Bundle ET01$4.99
  • Crystal x 600$5.99
  • Event Bundle CL01$5.99
  • Event Bundle CQ01$5.99
  • Event Bundle IS01$5.99
  • Event Bundle IS02$5.99
  • Event Bundle ITa$5.99
  • Event Bundle IUa$5.99
  • Event Bundle IVa$5.99
  • Event Bundle IC01$5.99
  • Event Bundle HW012$5.99
  • Event Bundle GJ01$5.99
  • Event Bundle FO012$5.99
  • Event Bundle FI012$5.99
  • Event Bundle FD01$5.99
  • Event Bundle EY01$5.99
  • Event Bundle EQ01$5.99
  • Event Bundle EL01$5.99
  • Event Bundle EH01$5.99
  • Event Bundle EB01$5.99
  • Event Bundle DI01$5.99
  • Event Bundle DN01$5.99
  • Event Bundle A$9.99
  • Crystal x 1200$11.99
  • Event Bundle CB08$11.99
  • Event Bundle CC01$11.99
  • Event Bundle CF15$11.99
  • Mountain Arcanum$14.99
  • Soaring Arcanum$14.99
  • Devotion Arcanum$14.99
  • Echo Pass$19.99
  • Crystal x 2400$23.99
  • Event Bundle IS01a$25.99
  • Event Bundle IS02a$25.99
  • Event Bundle U$29.99
  • Crystal x 6000$59.99

Questions

Is OCO free?
OCO is free to download, with in-app purchases available.
Is DEEMO II free?
DEEMO II is free to download, with in-app purchases available.
Which has better reviews, OCO or DEEMO II?
DEEMO II is rated higher. OCO averages 4.6 out of 5 from 2.4K ratings, while DEEMO II averages 4.8 from 3.7K ratings.
Do OCO or DEEMO II have ads?
OCO shows ads; DEEMO II does not.
Which is updated more often, OCO or DEEMO II?
OCO ships an update every 5 weeks, and DEEMO II every 2 months. Most recently, OCO was updated on September 23, 2026 and DEEMO II on September 22, 2026.
Which is more popular, OCO or DEEMO II?
OCO currently peaks at #146 in the App Store charts, and DEEMO II at #115. Chart position reflects recent download velocity rather than total install base.

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