# Sleep⋆ vs REM Sleep Tracker

The clearest difference is rating: Sleep⋆ at 4.5 against REM Sleep Tracker's 4.2. Sleep⋆ also leads on review sentiment (8% vs 0%) and device support (3 vs 1). REM Sleep Tracker's advantage is update cadence (every 2 weeks vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Sleep⋆ sells 9 in-app purchases, starting at $9.99 per month and REM Sleep Tracker sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Sleep⋆ holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 135 and 49 respectively. Written reviews point the same way: 8% of Sleep⋆'s written reviews are positive against 0% of REM Sleep Tracker's.

Sleep⋆ ships an update monthly, REM Sleep Tracker every 2 weeks. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Sleep⋆ | REM Sleep Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (135 ratings)](https://appshunter.io/ios/app/sleep/id1438502087/reviews)** | [4.2 (49 ratings)](https://appshunter.io/ios/app/rem-sleep-tracker/id6446677275/reviews) |
| Number of ratings | **135** | 49 |
| Positive reviews | **8.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 126 MB | 25 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Verv Inc.](https://appshunter.io/developer/583901247) | [Nicola Eusebi](https://appshunter.io/developer/737311863) |

## What reviewers say

### Sleep⋆

[App page](https://appshunter.io/ios/app/sleep/id1438502087)

Improve your sleep with calming sounds, stories, and personalized plans. Features a gentle alarm and sleep tracker to help you wake up refreshed and establish a better sleep routine.

**Highlights:** 70+ sleep stories and sounds, Personalized sleep plans, Gentle alarm clock, ASMR and delta waves, Sleep tracking, Low light interface

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership 1 Month | $9.99 | per month |
| Premium Membership 1 Month | $9.99 | per month |
| Premium Membership 1 Week | $9.99 | per 7 days |
| Premium Membership 1 Month | $14.99 | per month |
| Premium Membership 1 Year | $39.99 | per year |
| Premium Membership 6 Months | $41.99 | per 6 months |
| Premium Membership 1 Year | $59.99 | per year |
| Premium Membership 1 Year | $119.99 | per year |
| Lifetime Premium Membership | $59.99 | one-time |


### REM Sleep Tracker

[App page](https://appshunter.io/ios/app/rem-sleep-tracker/id6446677275)

This app analyzes Apple Watch sensor data to provide a sleep quality score. It offers detailed insights into sleep stages, heart rate, and weekly trends, helping users understand and improve their rest habits.

**Highlights:** Sleep quality scoring, Detailed sleep stage analysis (light, deep, REM), Heart rate monitoring, Weekly trend tracking, Sleep bank concept for habit analysis, Apple Health integration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Score Premium Yearly | $9.99 | per year |
| Sleep Score Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Sleep⋆ free?

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

### Is REM Sleep Tracker free?

REM Sleep Tracker is free to download, with in-app purchases available.

### Which has better reviews, Sleep⋆ or REM Sleep Tracker?

Sleep⋆ is rated higher. Sleep⋆ averages 4.5 out of 5 from 135 ratings, while REM Sleep Tracker averages 4.2 from 49 ratings.

### Do Sleep⋆ or REM Sleep Tracker have ads?

Neither Sleep⋆ nor REM Sleep Tracker shows ads.

### Which is updated more often, Sleep⋆ or REM Sleep Tracker?

Sleep⋆ ships an update monthly, and REM Sleep Tracker every 2 weeks. Most recently, Sleep⋆ was updated on October 14, 2026 and REM Sleep Tracker on October 8, 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.*