# Subrain vs vanta OS

The clearest difference is update cadence: vanta OS at every 2 days against Subrain's every 9 days. Subrain's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Subrain ships an update every 9 days, vanta OS every 2 days. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Subrain | vanta OS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 49 MB | 35 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jichan Hwang](https://appshunter.io/developer/1735193590) | [Nicholas Williams](https://appshunter.io/developer/6785071455) |

## 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


### vanta OS

[App page](https://appshunter.io/ios/app/vanta-os/id6785071453)

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

**In-app purchases:** none


## Frequently asked questions

### Is Subrain free?

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

### Is vanta OS free?

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

### Do Subrain or vanta OS have ads?

Neither Subrain nor vanta OS shows ads.

### Which is updated more often, Subrain or vanta OS?

Subrain ships an update every 9 days, and vanta OS every 2 days. Most recently, Subrain was updated on October 10, 2026 and vanta OS 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.*