# ObsiKO vs Isy.AI

The clearest difference is device support: ObsiKO at 4 against Isy.AI's 1. On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for ObsiKO against 5.0 for Isy.AI. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

ObsiKO ships an update every 6 days, Isy.AI every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ObsiKO | Isy.AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/obsiko-ai-note-plus-mindmap/id6783405451/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/isyai-ai-notes-second-brain/id6809262091/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 77 MB | 59 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| 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)

This app integrates writing, knowledge management, and mind mapping with AI assistance. It supports various file formats and offers unique features for Korean language users, including a focus timer and GitHub syncing for secure data management.

**Highlights:** AI-assisted writing and mind mapping, Supports Obsidian vaults (.md, .canvas, .base), Korean dictionary and spell checker, Lock Screen focus timer, GitHub sharing and syncing, Automatic note connection and organization, Infinite mind-map canvas with Apple Pencil support

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

**In-app purchases:** none


### Isy.AI

[App page](https://appshunter.io/ios/app/isyai-ai-notes-second-brain/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.

### Which has better reviews, ObsiKO or Isy.AI?

ObsiKO and Isy.AI are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### 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 25, 2026 and Isy.AI on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*