# Sleep Calculator App vs SleepSync

The clearest difference is rating: SleepSync at 3.7 against Sleep Calculator App's 3.0. SleepSync also leads on in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

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

SleepSync holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

## The numbers

| Metric | Sleep Calculator App | SleepSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/sleep-calculator-app/id1608356513/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/sleepsync-sleep-calculator/id6479617244/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 31 MB | 10 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Luz Ochoa](https://appshunter.io/developer/1508017518) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### Sleep Calculator App

[App page](https://appshunter.io/ios/app/sleep-calculator-app/id1608356513)

Optimize your sleep by calculating ideal bedtime and wake-up times based on natural 90-minute sleep cycles. Includes relaxing sounds and meditation to help you fall asleep faster and wake up feeling refreshed.

**Highlights:** Calculate best bedtime, Calculate best wake-up time, Select desired wake-up time, Relaxing sounds, Sleep meditation, No registration required

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium Subscription | $6.99 | one-time |


### 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


## Frequently asked questions

### Is Sleep Calculator App free?

Sleep Calculator App is free to download, with in-app purchases available.

### Is SleepSync free?

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

### Which has better reviews, Sleep Calculator App or SleepSync?

SleepSync is rated higher. Sleep Calculator App averages 3.0 out of 5 from 2 ratings, while SleepSync averages 3.7 from 3 ratings.

### Do Sleep Calculator App or SleepSync have ads?

Both Sleep Calculator App and SleepSync show ads.

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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.*