# NDA Key vs OpenMind AI

The clearest difference is review sentiment: NDA Key at 100% against OpenMind AI's 67%. NDA Key also leads on iOS requirement (13.0 vs 15.1). 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | NDA Key | OpenMind AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/openmind-ai/id6749165417/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 45 MB | 56 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [PILA GROUP JOINT STOCK COMPANY](https://appshunter.io/developer/1815759763) | [Sandbox Inc.](https://appshunter.io/developer/1776407890) |

## What reviewers say

### NDA Key

[App page](https://appshunter.io/ios/app/nda-key/id6475366901)

Manage your personal information securely and easily. Control how your data is shared and maintain your digital identity with a decentralized identifier wallet. Ensures data integrity and compliance with government regulations.

**Highlights:** Personal information management, Sharing control, Decentralized Identifier (DID) wallet, Digital identity creation and management, Data integrity and interoperability, Government compliance

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenMind AI

[App page](https://appshunter.io/ios/app/openmind-ai/id6749165417)

Contribute to robot development by reviewing video footage and providing wireless signal data. Participate in quests to enhance robot safety and intelligence in real-world settings.

**Highlights:** Review robot videos, Contribute wireless signal insights, Join robot improvement quests, Enhance robot safety, Improve robot intelligence

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NDA Key free?

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

### Is OpenMind AI free?

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

### Do NDA Key or OpenMind AI have ads?

Neither NDA Key nor OpenMind AI shows ads.

### Which is updated more often, NDA Key or OpenMind AI?

NDA Key ships an update every 3 weeks, and OpenMind AI every 3 weeks. Most recently, NDA Key was updated on October 13, 2026 and OpenMind AI on October 2, 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.*