# Nano Key vs Prevent

The clearest difference is update cadence: Prevent at monthly against Nano Key's every 2 months. 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.

Nano Key ships an update every 2 months, Prevent monthly. The most recent releases landed on May 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Nano Key | Prevent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 61 MB | 119 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Promont Solucoes Ltda](https://appshunter.io/developer/1450762911) | [Rafael Azevedo Medeiros](https://appshunter.io/developer/1423674208) |

## What reviewers say

### Nano Key

[App page](https://appshunter.io/ios/app/nano-key/id1495821408)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prevent

[App page](https://appshunter.io/ios/app/prevent/id6472447451)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nano Key free?

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

### Is Prevent free?

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

### Do Nano Key or Prevent have ads?

Neither Nano Key nor Prevent shows ads.

### Which is updated more often, Nano Key or Prevent?

Nano Key ships an update every 2 months, and Prevent monthly. Most recently, Nano Key was updated on May 16, 2026 and Prevent on September 8, 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.*