# MAI TECH vs OKIN SMART SLEEP

The clearest difference is update cadence: OKIN SMART SLEEP at weekly against MAI TECH's every 3 weeks. On price, ads, 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.

MAI TECH ships an update every 3 weeks, OKIN SMART SLEEP weekly. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | MAI TECH | OKIN SMART SLEEP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 152 MB | 123 MB |
| Requires iOS | 12.3 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shantou Institute of Ultrasonic Inst. Co., Ltd.](https://appshunter.io/developer/406261738) | [DewertOkin Technology Group Co., Ltd.](https://appshunter.io/developer/1108264169) |

## What reviewers say

### MAI TECH

[App page](https://appshunter.io/ios/app/mai-tech/id6444035864)

**Features:** macOS Compatibility

**In-app purchases:** none


### OKIN SMART SLEEP

[App page](https://appshunter.io/ios/app/okin-smart-sleep/id6449954084)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MAI TECH free?

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

### Is OKIN SMART SLEEP free?

OKIN SMART SLEEP is free to download, with no in-app purchases.

### Do MAI TECH or OKIN SMART SLEEP have ads?

Neither MAI TECH nor OKIN SMART SLEEP shows ads.

### Which is updated more often, MAI TECH or OKIN SMART SLEEP?

MAI TECH ships an update every 3 weeks, and OKIN SMART SLEEP weekly. Most recently, MAI TECH was updated on October 2, 2026 and OKIN SMART SLEEP on October 11, 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.*