# Focus vs Peekside

The clearest difference is price: Peekside at Free against Focus's $0.99. Peekside also leads on update cadence (every 2 days vs every 3 weeks). Focus's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.0). On ads and device support there is nothing between them.

Peekside is free to download; Focus costs $0.99 up front. Peekside sells 1 one-off in-app purchase. Focus asks for nothing beyond the download.

Focus ships an update every 3 weeks, Peekside every 2 days. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Focus | Peekside |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Paid | — |
| Size | 8 MB | 9 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [福荣 贺](https://appshunter.io/developer/6789378644) | [RoxyKovu LLC](https://appshunter.io/developer/1816071699) |

## What reviewers say

### Focus

[App page](https://appshunter.io/ios/app/focus-attention-self-control/id6789408515)

This app offers daily brain drills based on cognitive psychology and neuroscience to improve focus, impulse control, and working memory. Track your progress with analytics and learn about the science behind each exercise. It's designed for deep work with a user-friendly interface and privacy-focused features.

**Highlights:** 15 science-based cognitive drills, Progress tracking and analytics, Brain science library with explanations, Customizable for deep work, Privacy-focused, no account needed, JSON export/import backup

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

**In-app purchases:** none


### Peekside

[App page](https://appshunter.io/ios/app/peekside-screen-mirroring/id6794650892)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peekside Pro | $4.99 | one-time |


## Frequently asked questions

### Is Focus free?

Focus costs $0.99, with no in-app purchases.

### Is Peekside free?

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

### Do Focus or Peekside have ads?

Neither Focus nor Peekside shows ads.

### Which is updated more often, Focus or Peekside?

Focus ships an update every 3 weeks, and Peekside every 2 days. Most recently, Focus was updated on September 29, 2026 and Peekside on September 17, 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.*