# Sleep Optimizer vs SleepRiddle

The clearest difference is in-app purchases: Sleep Optimizer at none against SleepRiddle's 2. Sleep Optimizer also leads on update cadence (every 2 months vs every 9 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. SleepRiddle sells 2 in-app purchases, starting at $3.99 per month. Sleep Optimizer asks for nothing beyond the download.

Sleep Optimizer ships an update every 2 months, SleepRiddle every 9 months. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Sleep Optimizer | SleepRiddle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 21 MB | 15 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Livanda - Internetkliniken AB](https://appshunter.io/developer/1607972909) | [S Ravi Shankar](https://appshunter.io/developer/516903373) |

## What reviewers say

### Sleep Optimizer

[App page](https://appshunter.io/ios/app/sleep-optimizer/id1607972907)

**Features:** macOS Compatibility

**In-app purchases:** none


### SleepRiddle

[App page](https://appshunter.io/ios/app/sleepriddle-rest-better/id6753263352)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Yearly | $12.99 | per year |


## Frequently asked questions

### Is Sleep Optimizer free?

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

### Is SleepRiddle free?

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

### Do Sleep Optimizer or SleepRiddle have ads?

Neither Sleep Optimizer nor SleepRiddle shows ads.

### Which is updated more often, Sleep Optimizer or SleepRiddle?

Sleep Optimizer ships an update every 2 months, and SleepRiddle every 9 months. Most recently, Sleep Optimizer was updated on October 6, 2026 and SleepRiddle on September 29, 2026.

---

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