# SmartLensKit vs NDA Key

The clearest difference is update cadence: SmartLensKit at every 2 weeks against NDA Key's every 3 weeks. SmartLensKit also leads on iOS requirement (11.1 vs 13.0). 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.

SmartLensKit ships an update every 2 weeks, NDA Key every 3 weeks. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | SmartLensKit | NDA Key |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free |
| Size | 106 MB | 45 MB |
| Requires iOS | **11.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cuong Luu Hung](https://appshunter.io/developer/1634793639) | [PILA GROUP JOINT STOCK COMPANY](https://appshunter.io/developer/1815759763) |

## What reviewers say

### SmartLensKit

[App page](https://appshunter.io/ios/app/smartlenskit/id1634814913)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is SmartLensKit free?

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

### Is NDA Key free?

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

### Do SmartLensKit or NDA Key have ads?

Neither SmartLensKit nor NDA Key shows ads.

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

SmartLensKit ships an update every 2 weeks, and NDA Key every 3 weeks. Most recently, SmartLensKit was updated on October 19, 2026 and NDA Key on October 13, 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.*