# Bird Jump! vs Unstable!

The clearest difference is in-app purchases: Unstable! at none against Bird Jump!'s 1. Unstable! also leads on update cadence (every 4 months vs every 51 months). Bird Jump!'s advantage is rating (4.0 vs 3.8). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Bird Jump! sells 1 one-off in-app purchase. Unstable! asks for nothing beyond the download.

Bird Jump! holds the better App Store score, 4.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

Bird Jump! ships an update every 51 months, Unstable! every 4 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Bird Jump! | Unstable! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/bird-jump/id1033096585/reviews)** | [3.8 (5 ratings)](https://appshunter.io/ios/app/unstable/id1282444122/reviews) |
| Number of ratings | 4 | **5** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 51 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 76 MB | 153 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GameZen, Inc.](https://appshunter.io/developer/440126422) | [Leonardo Amora](https://appshunter.io/developer/690988469) |

## What reviewers say

### Bird Jump!

[App page](https://appshunter.io/ios/app/bird-jump/id1033096585)

Guide adorable birds with tiny wings to jump higher and avoid obstacles. Overcome gravity's pull to help your feathered friends soar.

**Highlights:** Intuitive jumping controls, Obstacle avoidance gameplay, Challenging gravity mechanics, Cute bird characters

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### 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


## Frequently asked questions

### Is Bird Jump! free?

Bird Jump! is free to download, with in-app purchases available.

### Is Unstable! free?

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

### Which has better reviews, Bird Jump! or Unstable!?

Bird Jump! is rated higher. Bird Jump! averages 4.0 out of 5 from 4 ratings, while Unstable! averages 3.8 from 5 ratings.

### Do Bird Jump! or Unstable! have ads?

Both Bird Jump! and Unstable! show ads.

### Which is updated more often, Bird Jump! or Unstable!?

Bird Jump! ships an update every 51 months, and Unstable! every 4 months. Most recently, Bird Jump! was updated on November 6, 2026 and Unstable! 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.*