# Nucleus vs Untap

The clearest difference is in-app purchases: Nucleus at none against Untap's 3. Nucleus also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Untap sells 3 in-app purchases, starting at $2.99 per 7 days. Nucleus asks for nothing beyond the download.

Nucleus ships an update every 9 days, Untap weekly. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Nucleus | Untap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (8 ratings)](https://appshunter.io/ios/app/untap-screen-time-app-blocker/id6759078648/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 56 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yekta Sarioglu](https://appshunter.io/developer/1633831532) | [Vishal Pawar](https://appshunter.io/developer/1710997168) |

## What reviewers say

### Nucleus

[App page](https://appshunter.io/ios/app/nucleus/id1633831530)

**Features:** macOS Compatibility

**In-app purchases:** none


### Untap

[App page](https://appshunter.io/ios/app/untap-screen-time-app-blocker/id6759078648)

This app helps you regain control of your phone usage by blocking distracting applications during designated focus hours and setting daily limits on app usage. It offers features like timed pauses, study quizzes before app access, and progress tracking to encourage mindful digital habits.

**Highlights:** Block distracting apps during focus hours, Set daily app opening limits, Create quizzes from study notes, Implement timed pauses before app access, Track screen time and protection streaks, Lock settings for stricter control

**Features:** macOS Compatibility, Safari Extension, Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Nucleus free?

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

### Is Untap free?

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

### Do Nucleus or Untap have ads?

Neither Nucleus nor Untap shows ads.

### Which is updated more often, Nucleus or Untap?

Nucleus ships an update every 9 days, and Untap weekly. Most recently, Nucleus was updated on November 7, 2026 and Untap on November 9, 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.*