# SleepMi vs Link Auth

The clearest difference is iOS requirement: SleepMi at 9.0 against Link Auth's 15.5. On price, update cadence, ads 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.

SleepMi ships an update every 3 months, Link Auth every 2 months. The most recent releases landed on October 6, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | SleepMi | Link Auth |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 11 MB | 39 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen LINGXI Technology Co., Ltd](https://appshunter.io/developer/957619029) | [Hangzhou Lingke Networks Technology Co.Ltd](https://appshunter.io/developer/1488305882) |

## What reviewers say

### SleepMi

[App page](https://appshunter.io/ios/app/sleepmi/id6443874901)

This app focuses on improving sleep quality through intelligent wearable devices and comprehensive data analysis. It aims to leverage technology for a better sleep experience.

**Highlights:** Intelligent wearable device integration, Comprehensive sleep data showcasing, Technology-driven sleep enhancement, Improved user experience for sleep, Deep software integration

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

**In-app purchases:** none


### Link Auth

[App page](https://appshunter.io/ios/app/link-auth/id6787915416)

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

**In-app purchases:** none


## Frequently asked questions

### Is SleepMi free?

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

### Is Link Auth free?

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

### Do SleepMi or Link Auth have ads?

Neither SleepMi nor Link Auth shows ads.

### Which is updated more often, SleepMi or Link Auth?

SleepMi ships an update every 3 months, and Link Auth every 2 months. Most recently, SleepMi was updated on October 6, 2026 and Link Auth on September 10, 2026.

---

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