# passNote vs Compatri

The clearest difference is in-app purchases: Compatri at none against passNote's 1. Compatri also leads on iOS requirement (15.5 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. passNote sells 1 in-app purchase, starting at $2.99 per month. Compatri asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | passNote | Compatri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Size | 80 MB | 49 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Ryota Izumi](https://appshunter.io/developer/1773491378) | [Espero-Soft Informatiques SRL](https://appshunter.io/developer/1891955658) |

## What reviewers say

### passNote

[App page](https://appshunter.io/ios/app/passnote-penpal-diary/id6762535541)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership | $2.99 | per month |


### Compatri

[App page](https://appshunter.io/ios/app/compatri/id6792702819)

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

**In-app purchases:** none


## Frequently asked questions

### Is passNote free?

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

### Is Compatri free?

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

### Do passNote or Compatri have ads?

Neither passNote nor Compatri shows ads.

### Which is updated more often, passNote or Compatri?

passNote ships an update every 5 days, and Compatri every 5 days. Most recently, passNote was updated on September 17, 2026 and Compatri on September 13, 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.*