# IDDA vs NASDS

The clearest difference is iOS requirement: NASDS at 13.0 against IDDA's 15.6. 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.

IDDA ships an update every 2 weeks, NASDS monthly. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | IDDA | NASDS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | — |
| Size | 37 MB | 42 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [IDDA GmbH](https://appshunter.io/developer/1663006167) | [Christian Daume](https://appshunter.io/developer/1681383719) |

## What reviewers say

### IDDA

[App page](https://appshunter.io/ios/app/idda/id1663006165)

This platform offers e-learning content and certifications to enhance diving knowledge and prepare for exams. It's designed to make learning and exam preparation more accessible for divers. Future updates promise even more features to support your diving journey.

**Highlights:** E-learning content, Brevet platform, Diving knowledge enhancement, Exam preparation, Accessible learning

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

**In-app purchases:** none


### NASDS

[App page](https://appshunter.io/ios/app/nasds/id6447462158)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IDDA free?

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

### Is NASDS free?

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

### Do IDDA or NASDS have ads?

Neither IDDA nor NASDS shows ads.

### Which is updated more often, IDDA or NASDS?

IDDA ships an update every 2 weeks, and NASDS monthly. Most recently, IDDA was updated on October 22, 2026 and NASDS 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.*