# SleepStack vs Morphi

The clearest difference is rating: Morphi at 5.0 against SleepStack's 4.0. Morphi also leads on device support (3 vs 1) and iOS requirement (14.0 vs 18.0). On price, ratings volume, 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 and Morphi sells 2 in-app purchases, starting at $13.99 per month. Whichever you choose, the download price is not the number that matters.

Morphi holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

SleepStack ships an update every 10 days, Morphi weekly. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SleepStack | Morphi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/sleepstack-sleep-protocol/id6760767864/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/morphi-ai-sleep-coach/id6776009439/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 49 MB | 109 MB |
| Requires iOS | 18.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [NUNE LLC](https://appshunter.io/developer/1838850912) | [Menoua Dergaloost](https://appshunter.io/developer/1853881815) |

## 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 |


### Morphi

[App page](https://appshunter.io/ios/app/morphi-ai-sleep-coach/id6776009439)

This AI-powered coach learns your unique sleep patterns and stress triggers to create personalized strategies for better rest. It offers guided routines, morning debriefs, and smart alarms to help you wake up feeling refreshed.

**Highlights:** AI-driven personalized sleep plans, Guided evening wind-down routines, Morning debriefs with sleep insights, Sleep stage and quality tracking, Smart alarm for rested wake-ups, Stress and habit analysis

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Morphi Premium (Monthly) | $13.99 | per month |
| Morphi Premium (Annual) | $59.99 | per year |


## Frequently asked questions

### Is SleepStack free?

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

### Is Morphi free?

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

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

Morphi is rated higher. SleepStack averages 4.0 out of 5 from 4 ratings, while Morphi averages 5.0 from 2 ratings.

### Do SleepStack or Morphi have ads?

Neither SleepStack nor Morphi shows ads.

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

SleepStack ships an update every 10 days, and Morphi weekly. Most recently, SleepStack was updated on October 3, 2026 and Morphi on September 29, 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.*