# sDiary vs Cycle Sleep Rest

The clearest difference is in-app purchases: Cycle Sleep Rest at none against sDiary's 3. sDiary's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. sDiary sells 3 in-app purchases, starting at $1.99 per month. Cycle Sleep Rest asks for nothing beyond the download.

sDiary ships an update every 3 weeks, Cycle Sleep Rest every 2 months. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | sDiary | Cycle Sleep Rest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 47 MB | 90 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anthony Eli Rasch](https://appshunter.io/developer/1785588945) | [Tran Phuong Nga](https://appshunter.io/developer/1896554090) |

## What reviewers say

### sDiary

[App page](https://appshunter.io/ios/app/sdiary/id6772774076)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sapplify Sync Monthly | $1.99 | per month |
| Sapplify Sync Yearly | $19.99 | per year |
| sDiary Pro | $29.99 | one-time |


### Cycle Sleep Rest

[App page](https://appshunter.io/ios/app/cycle-sleep-rest/id6786232729)

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

**In-app purchases:** none


## Frequently asked questions

### Is sDiary free?

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

### Is Cycle Sleep Rest free?

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

### Do sDiary or Cycle Sleep Rest have ads?

Neither sDiary nor Cycle Sleep Rest shows ads.

### Which is updated more often, sDiary or Cycle Sleep Rest?

sDiary ships an update every 3 weeks, and Cycle Sleep Rest every 2 months. Most recently, sDiary was updated on October 10, 2026 and Cycle Sleep Rest on October 12, 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.*