Protocol vs Milthm
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Protocol
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.
- Unique 3D visual note patterns
- Music from famous artists
- Soundtracks from popular games
- Optimized for smartphone/tablet
- Tense rhythm gameplay
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The feast of rhythm and beat in the Hyperspace! New kind of rhythm game Protocol : hyperspace Diver is Released! Let's DIVE into musical hyperspace ▶ Providing unique visual and tense note pattern in 3D space ▶ Music Dive with splendid music of famous artist such as ESTi / M2U / TAK / SQUARE MUSIQ... ▶ You can play Masterpiece of music from "Dragon flight / Destiny child" - popular games of NextFloor ▶ Play newest rhythm game optimized in Smartphone / Tablet Now! * Due to latency of the sound system, beat sync would not fit perfectly with Bluetooth devices. Using wired earphone or headphone is recommended.
Milthm
Immerse yourself in a rhythm game with a "Dreams" and "Rain" theme. Enjoy dynamic tracks, a clean UI, and unique replay modes that adjust difficulty. Experience a blend of music, animation, and challenging gameplay.
- Clean UI design with rain theme
- Dream replay mode with adjustable difficulty
- Vivid chart design
- High-quality music tracks
- Wonderful Trial for automatic restart
- Fade out notes for increased challenge
- Downpour mode for chaotic gameplay
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Milthm is a non-commercial rhythm game powered by passion, featuring dynamic tracks and notes. The game is themed around "Dreams" and "Rain". 1. Clean and simple UI design The UI complements the theme of "rain", immersing players in the charming world of rain. 2. Unique and enjoyable dream replay mode The ripples of the dream enhance the game's challenge and fun. If you're frustrated with missing notes, you can choose "Wonderful Trial" to automatically restart on a miss or bad. If you want to increase the difficulty and challenge yourself, you can choose "Fade out" to make notes vanish when approaching. If you're in the mood for a chaotic game-play, you can choose "Downpour" to rain down a massive number of raindrop notes. 3. Enjoyful and vivid chart design Chart designs that combine the emotions of the music and the story, providing a visual and auditory feast. It's not just a game; it's a wholehearted experience where animation and music intertwine to bring you unprecedented joy. Whether you're a beginner or a rhythm game expert, you'll find endless fun in the game. 4. Amazing and high-quality music tracks The music tracks in the game convey different musical styles and emotions. The musical talent of the artists will create an immersive auditory experience. The in-game music will become your companion, leading you into its world.
Screenshots
Verdict
The clearest difference is rating: Milthm at 4.9 against Protocol's 4.2. Milthm also leads on update cadence (every 2 weeks vs every 3 months) and review sentiment (92% vs 79%). Protocol's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Milthm holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Milthm has 275 ratings behind it against 53, so its average is the more settled of the two. Written reviews point the same way: 79% of Protocol's written reviews are positive against 92% of Milthm's.
Protocol ships an update every 3 months, Milthm every 2 weeks. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.
| Parameter | Protocol | Milthm |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (53 ratings) | 4.9 (275 ratings) — better |
| Positive reviews | 78.5% of reviews | 92.3% of reviews — better |
| Number of ratings | 53 | 275 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 274 MB | 1.1 GB |
| Age rating | 4+ | 17+ |
| Developer | LINE Games | 志琰 陈 |
Customer experience
Protocol
Milthm
Bugs and requests
Protocol
Not enough reviews yet to summarise bugs or requests.
Milthm
Reported bugs
6 issues- App crashes on startup or black screen freeze
- Crashes when playing specific charts (e.g., mornflutter, Downpour)
- 404 cloudburst error preventing song playback
- Incompatibility with iPad Air 1 and older iOS versions
- Game freezes at splash screen
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- Occasional frame drops during gameplay
Requested features
6 requests- Cloud save/account synchronization
- Chinese mainland server launch
- Notch and Dynamic Island optimization settings
- Screen edge width adjustment for gameplay
- More lenient rating system (full combo instead of all perfect)
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- Expanded story chapters
In-app purchases
Protocol
No in-app purchases
Milthm
No in-app purchases






