# AMIGOS By HKMC vs SleepEngine

The clearest difference is ads: SleepEngine at none against AMIGOS By HKMC's shown. SleepEngine also leads on update cadence (every 6 weeks vs every 4 months). AMIGOS By HKMC's advantage is iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

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

AMIGOS By HKMC ships an update every 4 months, SleepEngine every 6 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AMIGOS By HKMC | SleepEngine |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 115 MB | 78 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HONG KONG MORTGAGE CORPORATION LIMITED, THE](https://appshunter.io/developer/1528728484) | [Cambridge Sleep Sciences Ltd](https://appshunter.io/developer/1622392022) |

## What reviewers say

### AMIGOS By HKMC

[App page](https://appshunter.io/ios/app/amigos-by-hkmc/id1528728482)

**Features:** macOS Compatibility

**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 AMIGOS By HKMC free?

AMIGOS By HKMC is free to download, with no in-app purchases.

### Is SleepEngine free?

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

### Do AMIGOS By HKMC or SleepEngine have ads?

AMIGOS By HKMC shows ads; SleepEngine does not.

### Which is updated more often, AMIGOS By HKMC or SleepEngine?

AMIGOS By HKMC ships an update every 4 months, and SleepEngine every 6 weeks. Most recently, AMIGOS By HKMC was updated on October 25, 2026 and SleepEngine on October 24, 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.*