# U2plus vs GutBrain

The clearest difference is in-app purchases: GutBrain at none against U2plus's 4. GutBrain also leads on update cadence (every 3 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. U2plus sells 4 in-app purchases, starting at $2.99 per month. GutBrain asks for nothing beyond the download.

U2plus ships an update fortnightly, GutBrain every 3 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | U2plus | GutBrain |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 43 MB | 61 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Kaiju Company](https://appshunter.io/developer/1577355612) | [HyunJun Moon](https://appshunter.io/developer/6774416204) |

## What reviewers say

### U2plus

[App page](https://appshunter.io/ios/app/u2plus/id6756876262)

This app offers a quiet space for self-care, combining AI-powered cognitive behavioral therapy (CBT) with gentle encouragement. It allows users to track daily achievements, visualize negative thought patterns, and find alternative perspectives during difficult times, all within a safe, low-pressure environment.

**Highlights:** Daily achievement logging, Monthly pattern visualization, Alternative perspective finding, AI-powered support, Safe peer encouragement, Private user mode

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ライトプラン | $2.99 | per month |
| スタンダードプラン | $5.99 | per month |
| ライトプラン | $29.99 | per year |
| スタンダードプラン（年額） | $59.99 | per year |


### GutBrain

[App page](https://appshunter.io/ios/app/gutbrain-poop-ibs-stool-log/id6776510618)

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

**In-app purchases:** none


## Frequently asked questions

### Is U2plus free?

U2plus is free to download, with in-app purchases available.

### Is GutBrain free?

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

### Do U2plus or GutBrain have ads?

Neither U2plus nor GutBrain shows ads.

### Which is updated more often, U2plus or GutBrain?

U2plus ships an update fortnightly, and GutBrain every 3 days. Most recently, U2plus was updated on November 5, 2026 and GutBrain on November 5, 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.*