# Sleep Note vs TANREN

The clearest difference is in-app purchases: Sleep Note at none against TANREN's 1. Sleep Note also leads on iOS requirement (15.1 vs 17.0). TANREN's advantage is ads (none vs shown) and update cadence (every 2 days vs every 4 days). On price and device support there is nothing between them.

Both are free to download. TANREN sells 1 one-off in-app purchase. Sleep Note asks for nothing beyond the download.

Sleep Note ships an update every 4 days, TANREN every 2 days. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Sleep Note | TANREN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 38 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kengo Kanehiro](https://appshunter.io/developer/1869857869) | [Ryota Kumagawa](https://appshunter.io/developer/1097462228) |

## What reviewers say

### Sleep Note

[App page](https://appshunter.io/ios/app/sleep-note/id6758096161)

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

**In-app purchases:** none


### TANREN

[App page](https://appshunter.io/ios/app/tanren-simple-workout-log/id6762547801)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plusプラン | $5.99 | one-time |


## Frequently asked questions

### Is Sleep Note free?

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

### Is TANREN free?

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

### Do Sleep Note or TANREN have ads?

Sleep Note shows ads; TANREN does not.

### Which is updated more often, Sleep Note or TANREN?

Sleep Note ships an update every 4 days, and TANREN every 2 days. Most recently, Sleep Note was updated on October 10, 2026 and TANREN on September 28, 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.*