# Subrain vs Cat Notes

The clearest difference is in-app purchases: Subrain at none against Cat Notes's 3. Subrain also leads on iOS requirement (12.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cat Notes sells 3 in-app purchases, starting at $2.99 per month. Subrain asks for nothing beyond the download.

Subrain ships an update every 9 days, Cat Notes every 6 days. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Subrain | Cat Notes |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Monetization | Free | — |
| Size | 49 MB | 140 MB |
| Requires iOS | **12.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jichan Hwang](https://appshunter.io/developer/1735193590) | [Nhung Selly](https://appshunter.io/developer/999222520) |

## What reviewers say

### Subrain

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

This app helps you remember important information and life keywords that you might otherwise forget. Designed for minimalists, it offers a simple way to capture thoughts and serve as a personal milestone.

**Highlights:** Simple note-taking, Capture life keywords, Minimalist design, Acts as a milestone, Organize notes into pages

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

**In-app purchases:** none


### Cat Notes

[App page](https://appshunter.io/ios/app/cat-notes-purrfect-notebook/id6809296601)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purrfect Pro Monthly | $2.99 | per month |
| Purrfect Pro Yearly | $14.99 | per year |
| Purrfect Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Subrain free?

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

### Is Cat Notes free?

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

### Do Subrain or Cat Notes have ads?

Neither Subrain nor Cat Notes shows ads.

### Which is updated more often, Subrain or Cat Notes?

Subrain ships an update every 9 days, and Cat Notes every 6 days. Most recently, Subrain was updated on October 10, 2026 and Cat Notes on October 18, 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.*