# SleepSync vs SleepCalculator!

The clearest difference is in-app purchases: SleepSync at none against SleepCalculator!'s 2. SleepCalculator!'s advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SleepCalculator! sells 2 in-app purchases, starting at $1.99 per 7 days. SleepSync asks for nothing beyond the download.

## The numbers

| Metric | SleepSync | SleepCalculator! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/sleepsync-sleep-calculator/id6479617244/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Monetization | Ad-supported | — |
| Size | 10 MB | 3 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) | [亮辉 赵](https://appshunter.io/developer/1675818795) |

## What reviewers say

### SleepSync

[App page](https://appshunter.io/ios/app/sleepsync-sleep-calculator/id6479617244)

Optimize your sleep cycles to wake up feeling refreshed. This app calculates your ideal bedtime and wake-up time based on sleep science, offering insights into deep sleep and REM stages. Enjoy a user-friendly interface designed for a better night's rest.

**Highlights:** Personalized sleep schedule, Deep sleep and REM analysis, Intuitive sleep calculator, Advanced sleep cycle tracking, User-friendly interface, Privacy focused

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

**In-app purchases:** none


### SleepCalculator!

[App page](https://appshunter.io/ios/app/sleepcalculator/id6748582498)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $3.99 | per month |


## Frequently asked questions

### Is SleepSync free?

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

### Is SleepCalculator! free?

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

### Do SleepSync or SleepCalculator! have ads?

SleepSync shows ads; SleepCalculator! does not.

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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.*