# SENA NOTE vs 서앤오AI

The clearest difference is ads: 서앤오AI at none against SENA NOTE's shown. 서앤오AI also leads on update cadence (every 4 days vs every 9 days) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. SENA NOTE sells 3 one-off in-app purchases and 서앤오AI sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

SENA NOTE ships an update every 9 days, 서앤오AI every 4 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SENA NOTE | 서앤오AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 175 MB | 74 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EUNA JEONG](https://appshunter.io/developer/1814076518) | [Seo & Oh](https://appshunter.io/developer/1863146900) |

## What reviewers say

### SENA NOTE

[App page](https://appshunter.io/ios/app/sena-note/id6745816285)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100토큰 | $0.99 | one-time |
| 300 토큰 | $2.99 | one-time |
| 1500 토큰 | $17.99 | one-time |


### 서앤오AI

[App page](https://appshunter.io/ios/app/ai/id6792564436)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI 멤버쉽 (월간) | $3.99 | per month |
| AI 멤버쉽 (연간) | $39.99 | per year |


## Frequently asked questions

### Is SENA NOTE free?

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

### Is 서앤오AI free?

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

### Do SENA NOTE or 서앤오AI have ads?

SENA NOTE shows ads; 서앤오AI does not.

### Which is updated more often, SENA NOTE or 서앤오AI?

SENA NOTE ships an update every 9 days, and 서앤오AI every 4 days. Most recently, SENA NOTE was updated on October 31, 2026 and 서앤오AI on November 6, 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.*