# MAI TECH vs CoatInspect Pro

The clearest difference is in-app purchases: MAI TECH at none against CoatInspect Pro's 2. MAI TECH also leads on device support (3 vs 1) and iOS requirement (12.3 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. CoatInspect Pro sells 2 in-app purchases, starting at $1.99 per 7 days. MAI TECH asks for nothing beyond the download.

MAI TECH ships an update every 3 weeks, CoatInspect Pro every 4 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | MAI TECH | CoatInspect Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/coatinspect-pro-coating-calc/id6761478001/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 152 MB | 16 MB |
| Requires iOS | **12.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Shantou Institute of Ultrasonic Inst. Co., Ltd.](https://appshunter.io/developer/406261738) | [Ersel Tarhan](https://appshunter.io/developer/1093545232) |

## What reviewers say

### MAI TECH

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

**Features:** macOS Compatibility

**In-app purchases:** none


### CoatInspect Pro

[App page](https://appshunter.io/ios/app/coatinspect-pro-coating-calc/id6761478001)

This app provides essential coating inspection calculations and reference guides for professionals working in environments with limited internet access. It offers tools for dry film thickness, dew point, ambient conditions, spread rate, and abrasive consumption, all functioning offline.

**Highlights:** DFT/WFT Calculator, Dew Point Calculator, Ambient Condition Check, Spread Rate Calculator, Surface Profile Calculator, Abrasive Consumption Calculator, Offline Reference Guides

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is MAI TECH free?

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

### Is CoatInspect Pro free?

CoatInspect Pro is free to download, with in-app purchases available.

### Do MAI TECH or CoatInspect Pro have ads?

Neither MAI TECH nor CoatInspect Pro shows ads.

### Which is updated more often, MAI TECH or CoatInspect Pro?

MAI TECH ships an update every 3 weeks, and CoatInspect Pro every 4 weeks. Most recently, MAI TECH was updated on October 25, 2026 and CoatInspect Pro on October 28, 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.*