# KeepFocus vs MUST

The clearest difference is iOS requirement: MUST at 13.0 against KeepFocus's 17. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. KeepFocus sells 4 in-app purchases, starting at $1.99 per month and MUST sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KeepFocus ships an update every 8 days, MUST every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KeepFocus | MUST |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/keepfocus-block-apps-and-sites/id1668971820/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 69 MB | 29 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pacifiq](https://appshunter.io/developer/1845497615) | [MinWoo Lee](https://appshunter.io/developer/1895581405) |

## What reviewers say

### KeepFocus

[App page](https://appshunter.io/ios/app/keepfocus-block-apps-and-sites/id1668971820)

This app helps you cut screen time and build healthier digital habits by blocking distracting apps and websites. It offers scheduling tools and usage insights to boost productivity and overcome attention challenges.

**Highlights:** Block any app or website, Schedule recurring focus hours, Track daily, weekly, and monthly usage stats, Boost productivity and focus, Digital detox and dopamine reset, Control social media and screen time

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | per month |
| 프로 | $17.99 | per year |
| Pro | $39.99 | per year |
| Pro | $19.99 | one-time |


### MUST

[App page](https://appshunter.io/ios/app/must-only-3-things/id6763972936)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고제거 | $1.99 | one-time |


## Frequently asked questions

### Is KeepFocus free?

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

### Is MUST free?

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

### Do KeepFocus or MUST have ads?

Both KeepFocus and MUST show ads.

### Which is updated more often, KeepFocus or MUST?

KeepFocus ships an update every 8 days, and MUST every 4 days. Most recently, KeepFocus was updated on November 3, 2026 and MUST on October 31, 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.*