# NDT Toolbox vs Mercek

The clearest difference is update cadence: Mercek at daily against NDT Toolbox's every 4 months. 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.

NDT Toolbox ships an update every 4 months, Mercek daily. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | NDT Toolbox | Mercek |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Size | 74 MB | 53 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Muzaffer Sanli](https://appshunter.io/developer/1817503295) | [Mahmut Guzel](https://appshunter.io/developer/1878973744) |

## What reviewers say

### NDT Toolbox

[App page](https://appshunter.io/ios/app/ndt-toolbox/id6749625848)

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

**In-app purchases:** none


### Mercek

[App page](https://appshunter.io/ios/app/mercek-sehir-platformu/id6761124537)

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

**In-app purchases:** none


## Frequently asked questions

### Is NDT Toolbox free?

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

### Is Mercek free?

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

### Do NDT Toolbox or Mercek have ads?

Neither NDT Toolbox nor Mercek shows ads.

### Which is updated more often, NDT Toolbox or Mercek?

NDT Toolbox ships an update every 4 months, and Mercek daily. Most recently, NDT Toolbox was updated on October 8, 2026 and Mercek on October 10, 2026.

---

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