# URSOT vs Bubble

The clearest difference is update cadence: Bubble at every 4 days against URSOT's every 6 weeks. URSOT's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

URSOT ships an update every 6 weeks, Bubble every 4 days. The most recent releases landed on October 9, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | URSOT | Bubble |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Size | 91 MB | 43 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [上海弘顺毅达体育科技发展有限公司](https://appshunter.io/developer/1731963384) | [天韵 张](https://appshunter.io/developer/1874475495) |

## What reviewers say

### URSOT

[App page](https://appshunter.io/ios/app/ursot/id6480398454)

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

**In-app purchases:** none


### Bubble

[App page](https://appshunter.io/ios/app/bubble-and/id6774240818)

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

**In-app purchases:** none


## Frequently asked questions

### Is URSOT free?

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

### Is Bubble free?

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

### Do URSOT or Bubble have ads?

Neither URSOT nor Bubble shows ads.

### Which is updated more often, URSOT or Bubble?

URSOT ships an update every 6 weeks, and Bubble every 4 days. Most recently, URSOT was updated on October 9, 2026 and Bubble on September 25, 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.*