# KeyBlock vs Cronus

The clearest difference is update cadence: Cronus at daily against KeyBlock's every 6 weeks. 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.

KeyBlock ships an update every 6 weeks, Cronus daily. The most recent releases landed on October 15, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | KeyBlock | Cronus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyblock/id6768969376/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free | — |
| Size | 26 MB | 32 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KeyBlock Tech, LLC](https://appshunter.io/developer/1896619649) | [Moritz Wallawitsch](https://appshunter.io/developer/6801661115) |

## What reviewers say

### KeyBlock

[App page](https://appshunter.io/ios/app/keyblock/id6768969376)

This app uses NFC stickers to physically block distracting applications on your phone, helping you regain focus without relying on willpower. Simply tap your phone to a sticker to activate blocking modes like Deep Work or Sleep, and tap again to resume access.

**Highlights:** Block distracting apps with NFC tap, Four built-in focus modes, Dumb Phone mode for essentials, Activity dashboard for progress tracking, Discover page with focus tools

**In-app purchases:** none


### Cronus

[App page](https://appshunter.io/ios/app/cronus-ai-time-tracker/id6802339404)

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

**In-app purchases:** none


## Frequently asked questions

### Is KeyBlock free?

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

### Is Cronus free?

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

### Do KeyBlock or Cronus have ads?

Neither KeyBlock nor Cronus shows ads.

### Which is updated more often, KeyBlock or Cronus?

KeyBlock ships an update every 6 weeks, and Cronus daily. Most recently, KeyBlock was updated on October 15, 2026 and Cronus on October 22, 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.*