# Anch vs SleepEngine

The clearest difference is update cadence: SleepEngine at monthly against Anch's every 10 months. SleepEngine also leads on device support. Anch's advantage is iOS requirement (12.0 vs 15.6). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Anch ships an update every 10 months, SleepEngine monthly. The most recent releases landed on September 8, 2026 and July 23, 2026 respectively.

## The numbers

| Metric | Anch | SleepEngine |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | — | Free |
| Size | 72 MB | 78 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Think Digital (Pty) Ltd](https://appshunter.io/developer/1246694635) | [Cambridge Sleep Sciences Ltd](https://appshunter.io/developer/1622392022) |

## What reviewers say

### Anch

[App page](https://appshunter.io/ios/app/anch/id1618240087)

**In-app purchases:** none


### SleepEngine

[App page](https://appshunter.io/ios/app/sleepengine/id6736406638)

This app uses scientifically developed sound technology to help improve sleep quality. It guides your brain through healthy sleep cycles, aiding in falling asleep faster, staying asleep longer, and waking up refreshed. Designed to retrain natural sleep patterns, it offers personalized sleep programs for a better night's rest.

**Highlights:** Scientific sound technology, Guides brain through sleep cycles, Helps fall asleep faster, Reduces waking times, Personalized sleep programs, Bluetooth connectivity to SmartPillow

**In-app purchases:** none


## Frequently asked questions

### Is Anch free?

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

### Is SleepEngine free?

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

### Which is updated more often, Anch or SleepEngine?

Anch ships an update every 10 months, and SleepEngine monthly. Most recently, Anch was updated on September 8, 2026 and SleepEngine on July 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*