# SleepStack vs DreamSync

The clearest difference is rating: DreamSync at 5.0 against SleepStack's 4.0. DreamSync also leads on in-app purchases (none vs 3) and device support (3 vs 1). SleepStack's advantage is ratings volume (4 vs 1). On price, update cadence and ads there is nothing between them.

Both are free to download. SleepStack sells 3 in-app purchases, starting at $4.99 per 7 days. DreamSync asks for nothing beyond the download.

DreamSync holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

SleepStack ships an update every 10 days, DreamSync every 6 days. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | SleepStack | DreamSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/sleepstack-sleep-protocol/id6760767864/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dreamsync-ai-sleep-coach/id6761351756/reviews)** |
| Number of ratings | **4** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 49 MB | 34 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NUNE LLC](https://appshunter.io/developer/1838850912) | [GetDeAddicted LLC](https://appshunter.io/developer/1887948082) |

## What reviewers say

### SleepStack

[App page](https://appshunter.io/ios/app/sleepstack-sleep-protocol/id6760767864)

This app helps you build better sleep habits with guided routines, sleep tracking, and relaxation techniques. It monitors your sleep environment and provides feedback to improve your rest and morning recovery. Protect your sleep from phone distractions with app blocking features.

**Highlights:** Personalized bedtime routine builder, Sleep Score and insights tracking, Guided relaxation techniques, App blocking for sleep protection, Sleep environment monitoring, Morning energy and recovery feedback, Gamified sleep habit tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepStack Pro weekly | $4.99 | per 7 days |
| SleepStack Pro Yearly | $29.99 | per year |
| SleepStack Yearly | $59.99 | per year |


### DreamSync

[App page](https://appshunter.io/ios/app/dreamsync-ai-sleep-coach/id6761351756)

This app offers personalized sleep coaching and tracking powered by on-device AI. It includes a full 12-week CBT-I program for insomnia and a smart alarm to wake you gently. All data is processed and stored locally for absolute privacy.

**Highlights:** AI sleep coach with personalized guidance, 12-week clinical CBT-I program, Intelligent sleep tracking with stage analysis, Smart alarm for gentle wake-ups, Behavior correlation insights, Absolute privacy with local data storage, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SleepStack free?

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

### Is DreamSync free?

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

### Which has better reviews, SleepStack or DreamSync?

DreamSync is rated higher. SleepStack averages 4.0 out of 5 from 4 ratings, while DreamSync averages 5.0 from 1 ratings.

### Do SleepStack or DreamSync have ads?

Neither SleepStack nor DreamSync shows ads.

### Which is updated more often, SleepStack or DreamSync?

SleepStack ships an update every 10 days, and DreamSync every 6 days. Most recently, SleepStack was updated on October 20, 2026 and DreamSync on October 16, 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.*