# NDT Worldwide vs TranslateLearn

The clearest difference is update cadence: TranslateLearn at every 3 days against NDT Worldwide's every 16 months. NDT Worldwide's advantage is iOS requirement (15.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NDT Worldwide sells 10 one-off in-app purchases and TranslateLearn sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

NDT Worldwide ships an update every 16 months, TranslateLearn every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | NDT Worldwide | TranslateLearn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 days** |
| Size | 265 MB | 217 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [WWNDT SERVICES PRIVATE LIMITED](https://appshunter.io/developer/1570208273) | [Trong Quy Nguyen](https://appshunter.io/developer/1819646016) |

## What reviewers say

### NDT Worldwide

[App page](https://appshunter.io/ios/app/ndt-worldwide/id1607234047)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ASTM E165 | $44.99 | one-time |
| ASTM E2582 | $44.99 | one-time |
| ASTM E2375 | $54.99 | one-time |
| ASTM E709 | $54.99 | one-time |
| ASTM E2375 | $69.99 | one-time |
| ASNT MT Level III Examination | $219.99 | one-time |
| ASNT NDT Level III-BASIC | $299.99 | one-time |
| ASNT UT Level III Examination | $299.99 | one-time |
| ASNT ML Level III Examination | $399.99 | one-time |
| ASNT NDT Level III BASIC | $449.99 | one-time |


### TranslateLearn

[App page](https://appshunter.io/ios/app/translatelearn/id6758331622)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TranslateLearn Premium | $2.99 | per month |


## Frequently asked questions

### Is NDT Worldwide free?

NDT Worldwide is free to download, with in-app purchases available.

### Is TranslateLearn free?

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

### Do NDT Worldwide or TranslateLearn have ads?

Neither NDT Worldwide nor TranslateLearn shows ads.

### Which is updated more often, NDT Worldwide or TranslateLearn?

NDT Worldwide ships an update every 16 months, and TranslateLearn every 3 days. Most recently, NDT Worldwide was updated on October 25, 2026 and TranslateLearn on October 28, 2026.

---

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