# NDA Key vs U

The clearest difference is update cadence: U at every 4 days against NDA Key's every 3 weeks. On price, review sentiment, 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.

NDA Key ships an update every 3 weeks, U every 4 days. The most recent releases landed on June 1, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | NDA Key | U |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | Free |
| Size | 45 MB | 117 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PILA GROUP JOINT STOCK COMPANY](https://appshunter.io/developer/1815759763) | [Reda Kuehn](https://appshunter.io/developer/1724730981) |

## 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


### U

[App page](https://appshunter.io/ios/app/u-tel/id6475673902)

Engage in vibrant video calls and chats to foster meaningful connections. This platform helps you stay close to others, regardless of the distance, by offering innovative communication features.

**Highlights:** Vibrant video calls, Engaging chats, Meaningful connections, Innovative features, Community building

**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 U free?

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

### Do NDA Key or U have ads?

Neither NDA Key nor U shows ads.

### Which is updated more often, NDA Key or U?

NDA Key ships an update every 3 weeks, and U every 4 days. Most recently, NDA Key was updated on June 1, 2026 and U on June 5, 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.*