# ObsiKO vs Isy.AI

The clearest difference is update cadence: Isy.AI at every 3 days against ObsiKO's every 6 days. ObsiKO's advantage is device support (4 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

ObsiKO ships an update every 6 days, Isy.AI every 3 days. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ObsiKO | Isy.AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Size | 75 MB | 43 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Hyojin Kim](https://appshunter.io/developer/6783405453) | [Akhil Arunkumar](https://appshunter.io/developer/1877687216) |

## What reviewers say

### ObsiKO

[App page](https://appshunter.io/ios/app/obsiko-ai-note-plus-mindmap/id6783405451)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Isy.AI

[App page](https://appshunter.io/ios/app/isyai/id6809262091)

**In-app purchases:** none


## Frequently asked questions

### Is ObsiKO free?

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

### Is Isy.AI free?

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

### Do ObsiKO or Isy.AI have ads?

Neither ObsiKO nor Isy.AI shows ads.

### Which is updated more often, ObsiKO or Isy.AI?

ObsiKO ships an update every 6 days, and Isy.AI every 3 days. Most recently, ObsiKO was updated on October 10, 2026 and Isy.AI on October 11, 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.*