# Subrain vs AreaViz

The clearest difference is in-app purchases: Subrain at none against AreaViz's 1. Subrain also leads on iOS requirement (15.0 vs 17.0). AreaViz's advantage is update cadence (every 2 days vs every 8 days). On price, ads and device support there is nothing between them.

Both are free to download. AreaViz sells 1 one-off in-app purchase. Subrain asks for nothing beyond the download.

Subrain ships an update every 8 days, AreaViz every 2 days. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Subrain | AreaViz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 41 MB | 12 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jichan Hwang](https://appshunter.io/developer/1735193590) | [BoardTack](https://appshunter.io/developer/1635348588) |

## What reviewers say

### Subrain

[App page](https://appshunter.io/ios/app/subrain/id6502538432)

This minimalist note-taking app helps you remember important keywords and life directions. It offers a simple interface for jotting down tasks and life-defining thoughts, acting as an extension of your memory.

**Highlights:** Simple note writing, Organized pages for notes, Minimalist interface, Acts as an extra brain, Helps remember keywords, Tracks life directions

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

**In-app purchases:** none


### AreaViz

[App page](https://appshunter.io/ios/app/areaviz-integrated-ai-chatbot/id6502549409)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AreaViz Pro | $29.99 | one-time |


## Frequently asked questions

### Is Subrain free?

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

### Is AreaViz free?

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

### Do Subrain or AreaViz have ads?

Neither Subrain nor AreaViz shows ads.

### Which is updated more often, Subrain or AreaViz?

Subrain ships an update every 8 days, and AreaViz every 2 days. Most recently, Subrain was updated on October 30, 2026 and AreaViz on November 4, 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.*