OCO vs Project
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Simple one-touch controls
- Over 7000 challenging puzzles
- Level editor and sharing system
- Daily challenges
- Minimalist design
- Procedurally-generated soundtrack
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“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
Project
Experience an innovative music game where every tap triggers original electronic sounds. Engage in rhythm gameplay with unique multi-track challenges, diverse music styles, and customizable characters. Compete with friends and players worldwide in this visually rich experience.
- Rhythm gameplay with real-time pronunciation
- Original independent electronic music
- Multi-track music challenges
- Diverse and updated music styles
- Customizable characters and skins
- Global player competition
- Potential visual improvement for amblyopia
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It was an incredible music game in a different way! Every note, every voice is respond to your tap! Game Features: • Rhythm gameplay, innovative real-time key pronunciation. • Original Independent electronic music producer. • Innovative multi track music games. • Different styles of electronic music, constantly updated. • Cool and rich themed skins with unparalleled visual effects. • 40 characters with different personalities, all with their own characteristics. • Selected theme song package, take you into the characters of the story. • Personalized persona space. • Compete with friends and global players. • Apple's full device support, with full resolution. • The rhythm of the electronic sound, and the players have an emotional resonance. • This Game Obvious Improvement On Amblyopiapia. Game rules: • Tap the note while following the rhyme, ensure to get perfect. • Don't miss a note, hit combos and hit perfectly to get high scores. ◆ Best experience with headphones. ◆ Hope you to enjoy the game! ◆ Thanks to the game icon p. Muse-- Emily made by the player "SmolAntBoi"! ◆ Thanks to ColBreakz, Blaver, KODOMOi, Akako Hinami, Yan Dongwei and other famous music producers. ◆ VIDEO: https://youtu.be/g1IFnIAZhTg ◆ Facebook: https://www.facebook.com/RinzzGame ◆ This Game Obvious Improvement On Amblyopiapia Instructions on the use of amblyopia / hyperopia training: 1: First, you need to choose special skin for [amblyopia / hyperopia] in the game (those with normal vision are not recommended) 2: The principle of hyperopia is to increase vision by using the sensitivity of awakening visual cells such as red light, blue light, lattice light and afterimage light to stimulate eyeball development and enhance vision. ◆ Disclaimer: “Project: Muse” is a free game,but it involves optional VIP and selected packages paid service and some game props need to be paid for. ◆ Please visit the following links for terms of use and privacy policy: Terms of use: https://rinzz.com/oho/privacy-policy/ Privacy policy: https://rinzz.com/oho/privacy-policy/
Screenshots
Verdict
The clearest difference is chart position: OCO at #155 against Project's unranked. Project's advantage is iOS requirement (12.0 vs 15.0). On price, rating, review sentiment and ratings volume 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
Both are free to download. OCO sells 8 one-off in-app purchases and Project sells 18 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for OCO against 4.6 for Project. Both are backed by a comparable volume of ratings — 2.4K and 1.5K respectively. Written reviews split almost evenly too, at 73% and 72% positive.
OCO ships an update every 5 weeks, Project monthly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.
| Parameter | OCO | Project |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) | 4.6 (1.5K ratings) |
| Positive reviews | 73.0% of reviews — better | 72.4% of reviews |
| Number of ratings | 2.4K — better | 1.5K |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #155 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 113 MB | 1.2 GB |
| Age rating | 4+ | 9+ |
| Developer | SPECTRUM48 LIMITED | Rinzz Co. Ltd. |
Customer experience
OCO
Project
User reviews
OCO
From 2.4K App Store ratingsWhat 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
Project
From 1.5K App Store ratingsWhat we love
- 🎨 Beautiful visuals and character designs
- 🎵 Catchy and enjoyable music
- 🕹️ Fun and challenging gameplay
- 👍 Addictive and engaging experience
Room to improve
- 🐛 Bugs and glitches (note sync issues, crashes, freezes)
- 💰 Excessive in-app purchases and paywalls
- 🔇 Sound issues (music cutting out)
- 🤯 Difficulty spike for newer players
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
Project
Reported bugs
4 issues- Levels/songs getting locked after updates
- Inconsistent note registration on 4-lane sections
- SOS feature not working as intended
- Progress/data loss after reinstalling the app
Requested features
4 requests- Practice mode for individual song sections
- More frequent content updates
- Ability to restore previously purchased content
- Improved calibration and note detection
In-app purchases
OCO
- NO ADSFree
- x 2000 bits$0.99
- x 5000 bits$0.99
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- Remove ads$1.99
- x 8000 bits$2.99
- OCO pro$2.99
- x 30000 bits$4.99
- x 100000 bits$9.99
Project
- New Journey - Coins Pack$0.99
- Green Light - Package A$0.99
- New Player Bonus$0.99
Show 15 moreShow fewer
- Lucky Coin Package$0.99
- Unlimited Energy$1.99
- Skin package$2.99
- Fall Harvest Day Anecdote$2.99
- The Holy Night Expedition$2.99
- Lucky Snowy Cloud Nation$2.99
- Forest Rhapsody$2.99
- Journey To Another World$2.99
- Cherry Blossom Dreams$2.99
- Time Gala: Mystery Tracker$2.99
- Eve Ritual: King Project$2.99
- Summer Escape Plan$2.99
- On The Way - Coins Pack$3.99
- VIP PACK$5.99
- Sparks Fly - Coins Pack$8.99








