# Biphase vs Milthm

The clearest difference is monetization model: Milthm at free against Biphase's paid. Milthm also leads on review sentiment (92% vs 56%) and ratings volume (272 vs 9). Biphase's advantage is iOS requirement (10.0 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

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 4.8. That said, the two scores are not equally well evidenced: Milthm has 272 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 56% of Biphase's written reviews are positive against 92% of Milthm's.

Biphase ships an update fortnightly, Milthm every 2 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Biphase | Milthm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (9 ratings)](https://appshunter.io/ios/app/biphase/id1551088421/reviews) | **[4.9 (272 ratings)](https://appshunter.io/ios/app/milthm/id6451048899/reviews)** |
| Number of ratings | 9 | **272** |
| Positive reviews | 56.4% of reviews | **92.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Paid | **Free** |
| Size | 212 MB | 1.1 GB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Seasun Games Corporation Limited](https://appshunter.io/developer/645414921) | [志琰 陈](https://appshunter.io/developer/1696218830) |

## What reviewers say

### Biphase

[App page](https://appshunter.io/ios/app/biphase/id1551088421)

This 2D platformer uses exploration and puzzles to depict the experience of bipolar disorder. Players navigate abstract mental landscapes, switching between red and black worlds representing manic and depressive states, to find an exit and foster empathy.

**Highlights:** 2D platform jumping, Exploration and puzzles, Abstract mental world navigation, Dual-phase color switching mechanic, Realistic depiction of bipolar disorder, Empathy-building narrative

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

**In-app purchases:** none


### Milthm

[App page](https://appshunter.io/ios/app/milthm/id6451048899)

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.

**Highlights:** 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

**In-app purchases:** none

**What reviewers like**

- 🎵 Excellent song variety and quality
- 🎨 Beautiful UI design and visual effects
- ⚡ Smooth and polished gameplay experience
- 🎯 Unique and creative charting style
- 💰 No gacha, ads, or pay-to-win mechanics

**What reviewers complain about**

- 🐛 Frequent crashes and black screen issues
- 📱 Compatibility problems with older iOS devices
- ⚙️ Occasional frame rate stuttering and lag
- 🎯 Overly strict S-rank requirements (all perfect needed)
- 🔧 Hitbox detection inconsistencies

**Reported bugs**

- 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

**Requested features**

- 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)


## Frequently asked questions

### Is Biphase free?

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

### Is Milthm free?

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

### Which has better reviews, Biphase or Milthm?

Milthm is rated higher. Biphase averages 4.8 out of 5 from 9 ratings, while Milthm averages 4.9 from 272 ratings.

### Do Biphase or Milthm have ads?

Neither Biphase nor Milthm shows ads.

### Which is updated more often, Biphase or Milthm?

Biphase ships an update fortnightly, and Milthm every 2 weeks. Most recently, Biphase was updated on November 7, 2026 and Milthm on November 3, 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.*