# Mind Sutra vs Bubble Calm

The clearest difference is price: Bubble Calm at Free against Mind Sutra's $5.99. Bubble Calm also leads on update cadence (daily vs every 7 months). Mind Sutra's advantage is in-app purchases (none vs 1) and iOS requirement (16.6 vs 18.6). On ads and device support there is nothing between them.

Bubble Calm is free to download; Mind Sutra costs $5.99 up front. Bubble Calm sells 1 one-off in-app purchase. Mind Sutra asks for nothing beyond the download.

Mind Sutra ships an update every 7 months, Bubble Calm daily. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Mind Sutra | Bubble Calm |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Daily** |
| Monetization | Paid | — |
| Size | 108 MB | 10 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QOOQ inc.](https://appshunter.io/developer/446639722) | [picturing bits](https://appshunter.io/developer/1799046832) |

## What reviewers say

### Mind Sutra

[App page](https://appshunter.io/ios/app/mind-sutra/id1518361373)

Engage in a meditative Japanese tradition by tracing sutra characters on your smartphone. This app offers a user-friendly interface, automatic character advancement, and pronunciation guides to promote relaxation, focus, and a sense of accomplishment.

**Highlights:** Meditative sutra tracing, Innovative coloring book interface, Automatic character advance, Modern translation of sutra, Furigana pronunciation guides, Copying log for progress tracking, Sample audio recitation

**In-app purchases:** none


### Bubble Calm

[App page](https://appshunter.io/ios/app/bubble-calm/id6757302485)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Calm Plus | $1.99 | one-time |


## Frequently asked questions

### Is Mind Sutra free?

Mind Sutra costs $5.99, with no in-app purchases.

### Is Bubble Calm free?

Bubble Calm is free to download, with in-app purchases available.

### Do Mind Sutra or Bubble Calm have ads?

Neither Mind Sutra nor Bubble Calm shows ads.

### Which is updated more often, Mind Sutra or Bubble Calm?

Mind Sutra ships an update every 7 months, and Bubble Calm daily. Most recently, Mind Sutra was updated on October 12, 2026 and Bubble Calm on October 5, 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.*