# RainLoop vs ZEN BUBBLE

The clearest difference is in-app purchases: RainLoop at none against ZEN BUBBLE's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ZEN BUBBLE sells 2 in-app purchases, starting at $7.99 per month. RainLoop asks for nothing beyond the download.

RainLoop ships an update every 10 days, ZEN BUBBLE weekly. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | RainLoop | ZEN BUBBLE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Size | 52 MB | 66 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SANWA Inc.](https://appshunter.io/developer/1878028373) | [Keisuke Inazawa](https://appshunter.io/developer/1896767902) |

## What reviewers say

### RainLoop

[App page](https://appshunter.io/ios/app/rainloop/id6760632041)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZEN BUBBLE

[App page](https://appshunter.io/ios/app/zen-bubble-calm-breathing/id6793133843)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $7.99 | per month |
| Premium (Annual) | $39.99 | per year |


## Frequently asked questions

### Is RainLoop free?

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

### Is ZEN BUBBLE free?

ZEN BUBBLE is free to download, with in-app purchases available.

### Do RainLoop or ZEN BUBBLE have ads?

Neither RainLoop nor ZEN BUBBLE shows ads.

### Which is updated more often, RainLoop or ZEN BUBBLE?

RainLoop ships an update every 10 days, and ZEN BUBBLE weekly. Most recently, RainLoop was updated on October 7, 2026 and ZEN BUBBLE on October 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*