# ChessLock vs Nufocus

The clearest difference is in-app purchases: Nufocus at none against ChessLock's 6. ChessLock's advantage is ads (none vs shown) and device support (3 vs 1). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. ChessLock sells 5 in-app purchases, starting at $2.99 per month. Nufocus asks for nothing beyond the download.

ChessLock ships an update fortnightly, Nufocus every 10 days. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | ChessLock | Nufocus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/chesslock-screen-time-control/id6744930081/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Freemium | — |
| Size | 50 MB | 41 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Patricio Guzman](https://appshunter.io/developer/1707843725) | [Lateef Shaik](https://appshunter.io/developer/1856564606) |

## What reviewers say

### ChessLock

[App page](https://appshunter.io/ios/app/chesslock-screen-time-control/id6744930081)

This app helps you control screen time by blocking distracting applications. To take a break, you must solve chess puzzles, sharpening your mind and earning your pause. It's designed for anyone seeking enhanced focus and productivity with a unique, brain-boosting approach.

**Highlights:** Block distracting apps, Solve chess puzzles for breaks, Customizable focus sessions, Brain-training puzzles, Private by design, no data collection, Pro version for advanced features

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chesslock Pro | $2.99 | per month |
| Chesslock Pro | $19.99 | per year |
| Chesslock Pro | $29.99 | per year |
| Chesslock Pro | $17.49 | one-time |
| Chesslock Pro | $34.99 | one-time |


### Nufocus

[App page](https://appshunter.io/ios/app/nufocus-focused-screen-time/id6759930182)

**In-app purchases:** none


## Frequently asked questions

### Is ChessLock free?

ChessLock is free to download, with in-app purchases available.

### Is Nufocus free?

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

### Do ChessLock or Nufocus have ads?

Nufocus shows ads; ChessLock does not.

### Which is updated more often, ChessLock or Nufocus?

ChessLock ships an update fortnightly, and Nufocus every 10 days. Most recently, ChessLock was updated on October 12, 2026 and Nufocus on October 1, 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.*