# CMaster vs JAIOT

The clearest difference is iOS requirement: CMaster at 9.0 against JAIOT's 15.1. 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.

CMaster ships an update every 2 months, JAIOT every 5 weeks. The most recent releases landed on September 10, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | CMaster | JAIOT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/jaiot/id6739862235/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 82 MB | 82 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sichuan Changhong Network Technologies Co., Ltd.](https://appshunter.io/developer/1510669126) | [Guangdong Juan Intelligent Technology Joint Stock Co., Ltd](https://appshunter.io/developer/845790513) |

## What reviewers say

### CMaster

[App page](https://appshunter.io/ios/app/cmaster/id1510669127)

**Features:** macOS Compatibility

**In-app purchases:** none


### JAIOT

[App page](https://appshunter.io/ios/app/jaiot/id6739862235)

Manage and control multiple smart devices from a single app. Monitor device status in real-time, receive instant alerts for anomalies, and automate actions with one-click scene triggers. Enjoy a user-friendly interface for seamless IoT integration.

**Highlights:** Real-time device monitoring, Instant anomaly alerts, Remote device control, One-click scene automation, Multi-layer data encryption, Cloud backup for device data

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

**In-app purchases:** none


## Frequently asked questions

### Is CMaster free?

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

### Is JAIOT free?

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

### Do CMaster or JAIOT have ads?

Neither CMaster nor JAIOT shows ads.

### Which is updated more often, CMaster or JAIOT?

CMaster ships an update every 2 months, and JAIOT every 5 weeks. Most recently, CMaster was updated on September 10, 2026 and JAIOT on August 17, 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.*