# NDT Events vs Coating Inspector

The clearest difference is in-app purchases: NDT Events at none against Coating Inspector's 4. NDT Events also leads on device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Coating Inspector sells 4 in-app purchases, starting at $14.99 per month. NDT Events asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | NDT Events | Coating Inspector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Size | 7 MB | 43 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The British Institute of Non-Destructive Testing](https://appshunter.io/developer/554280129) | [Austenite Pty Ltd](https://appshunter.io/developer/1525502686) |

## What reviewers say

### NDT Events

[App page](https://appshunter.io/ios/app/ndt-events/id1129755816)

**In-app purchases:** none


### Coating Inspector

[App page](https://appshunter.io/ios/app/coating-inspector/id6744104002)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $14.99 | per month |
| Yearly: Subscription | $29.00 | per year |
| 12 Months Plan | $29.00 | per year |
| Premium Yearly | $44.99 | per year |


## Frequently asked questions

### Is NDT Events free?

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

### Is Coating Inspector free?

Coating Inspector is free to download, with in-app purchases available.

### Do NDT Events or Coating Inspector have ads?

Neither NDT Events nor Coating Inspector shows ads.

### Which is updated more often, NDT Events or Coating Inspector?

NDT Events ships an update every 5 months, and Coating Inspector every 5 months. Most recently, NDT Events was updated on October 26, 2026 and Coating Inspector on October 25, 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.*