# Unstable! vs Sonic Flow

The clearest difference is rating: Sonic Flow at 5.0 against Unstable!'s 3.8. Sonic Flow also leads on update cadence (monthly vs every 4 months). Unstable!'s advantage is ratings volume (5 vs 1) and iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sonic Flow holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Unstable! has 5 ratings behind it against 1, so its average is the more settled of the two.

Unstable! ships an update every 4 months, Sonic Flow monthly. The most recent releases landed on September 13, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Unstable! | Sonic Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (5 ratings)](https://appshunter.io/ios/app/unstable/id1282444122/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sonic-flow-rhythm/id6760001580/reviews)** |
| Number of ratings | **5** | 1 |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Ad-supported | Ad-supported |
| Size | 153 MB | 214 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 9+ |
| Developer | [Leonardo Amora](https://appshunter.io/developer/690988469) | [OMNIS HURRICANE LLC](https://appshunter.io/developer/1772648708) |

## What reviewers say

### Unstable!

[App page](https://appshunter.io/ios/app/unstable/id1282444122)

Control a bar to defend falling balls from a central core. Collect power-ups to enhance your gameplay and see how long you can survive. Enjoy endless, casual fun with new levels and music.

**Highlights:** Defend falling balls, Move bar with touch/drag, Collect power-ups, Endless gameplay, New level, new song, Casual mechanics

**Features:** Vision Pro support

**In-app purchases:** none


### Sonic Flow

[App page](https://appshunter.io/ios/app/sonic-flow-rhythm/id6760001580)

Engage with a vibrant music world by tapping to a beat as tiles flow across the screen. This game challenges your timing and reflexes with a variety of tracks, from relaxing to high-energy. It's easy to learn but offers increasing difficulty for extended play.

**Highlights:** Interactive music gameplay, Beat-driven tile challenges, Smooth controls, Responsive gameplay, Variety of music tracks, Increasing tempo challenges

**In-app purchases:** none


## Frequently asked questions

### Is Unstable! free?

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

### Is Sonic Flow free?

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

### Which has better reviews, Unstable! or Sonic Flow?

Sonic Flow is rated higher. Unstable! averages 3.8 out of 5 from 5 ratings, while Sonic Flow averages 5.0 from 1 ratings.

### Do Unstable! or Sonic Flow have ads?

Both Unstable! and Sonic Flow show ads.

### Which is updated more often, Unstable! or Sonic Flow?

Unstable! ships an update every 4 months, and Sonic Flow monthly. Most recently, Unstable! was updated on September 13, 2026 and Sonic Flow on September 19, 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.*