# Project vs Protocol

The clearest difference is in-app purchases: Protocol at none against Project's 18. Protocol also leads on ads (none vs shown) and iOS requirement (9.0 vs 12.0). Project's advantage is rating (4.6 vs 4.2) and update cadence (monthly vs every 3 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. Project sells 18 one-off in-app purchases. Protocol asks for nothing beyond the download.

Project holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Project has 1.5K ratings behind it against 53, so its average is the more settled of the two. Written reviews complicate that: 72% of Project's written reviews are positive against 79% of Protocol's, so the app with the better star average is not the one people write more warmly about.

Project ships an update monthly, Protocol every 3 months. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Project | Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.5K ratings)](https://appshunter.io/ios/app/project-muse/id1094656747/reviews)** | [4.2 (53 ratings)](https://appshunter.io/ios/app/protocolhyperspace-diver/id1124788464/reviews) |
| Number of ratings | **1.5K** | 53 |
| Positive reviews | 72.4% of reviews | **78.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#187** | — |
| Size | 1.2 GB | 274 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Rinzz Co. Ltd.](https://appshunter.io/developer/948116526) | [LINE Games](https://appshunter.io/developer/447309128) |

## What reviewers say

### Project

[App page](https://appshunter.io/ios/app/project-muse/id1094656747)

**Currently charting:** #187 Top Free · Music (US App Store)

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.

**Highlights:** 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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| New Journey - Coins Pack | $0.99 | one-time |
| Green Light - Package A | $0.99 | one-time |
| New Player Bonus | $0.99 | one-time |
| Lucky Coin Package | $0.99 | one-time |
| Unlimited Energy | $1.99 | one-time |
| Skin package | $2.99 | one-time |
| Fall Harvest Day Anecdote | $2.99 | one-time |
| The Holy Night Expedition | $2.99 | one-time |
| Lucky Snowy Cloud Nation | $2.99 | one-time |
| Forest Rhapsody | $2.99 | one-time |
| Journey To Another World | $2.99 | one-time |
| Cherry Blossom Dreams | $2.99 | one-time |
| Time Gala: Mystery Tracker | $2.99 | one-time |
| Eve Ritual: King Project | $2.99 | one-time |
| Summer Escape Plan | $2.99 | one-time |
| On The Way - Coins Pack | $3.99 | one-time |
| VIP PACK | $5.99 | one-time |
| Sparks Fly - Coins Pack | $8.99 | one-time |

**What reviewers like**

- 🎨 Beautiful visuals and character designs
- 🎵 Catchy and enjoyable music
- 🕹️ Fun and challenging gameplay
- 👍 Addictive and engaging experience

**What reviewers complain about**

- 🐛 Bugs and glitches (note sync issues, crashes, freezes)
- 💰 Excessive in-app purchases and paywalls
- 🔇 Sound issues (music cutting out)
- 🤯 Difficulty spike for newer players

**Reported bugs**

- 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**

- Practice mode for individual song sections
- More frequent content updates
- Ability to restore previously purchased content
- Improved calibration and note detection


### Protocol

[App page](https://appshunter.io/ios/app/protocolhyperspace-diver/id1124788464)

Experience a unique rhythm game set in a musical hyperspace. Enjoy tense 3D note patterns synchronized with music from famous artists and popular game soundtracks. Optimized for smartphones and tablets.

**Highlights:** Unique 3D visual note patterns, Music from famous artists, Soundtracks from popular games, Optimized for smartphone/tablet, Tense rhythm gameplay

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

**In-app purchases:** none


## Frequently asked questions

### Is Project free?

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

### Is Protocol free?

Protocol is free to download, with no in-app purchases.

### Which has better reviews, Project or Protocol?

Project is rated higher. Project averages 4.6 out of 5 from 1.5K ratings, while Protocol averages 4.2 from 53 ratings.

### Do Project or Protocol have ads?

Project shows ads; Protocol does not.

### Which is updated more often, Project or Protocol?

Project ships an update monthly, and Protocol every 3 months. Most recently, Project was updated on September 25, 2026 and Protocol on September 23, 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.*