# InfusionLog vs ObsiKO

The clearest difference is in-app purchases: ObsiKO at none against InfusionLog's 2. ObsiKO also leads on update cadence (every 6 days vs every 4 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. InfusionLog sells 2 in-app purchases, starting at $4.99 per month. ObsiKO asks for nothing beyond the download.

InfusionLog ships an update every 4 months, ObsiKO every 6 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | InfusionLog | ObsiKO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Size | 6 MB | 75 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [慧慧 高](https://appshunter.io/developer/1887721875) | [Hyojin Kim](https://appshunter.io/developer/6783405453) |

## What reviewers say

### InfusionLog

[App page](https://appshunter.io/ios/app/infusionlog/id6770405328)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $29.99 | per year |


### 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


## Frequently asked questions

### Is InfusionLog free?

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

### Is ObsiKO free?

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

### Do InfusionLog or ObsiKO have ads?

Neither InfusionLog nor ObsiKO shows ads.

### Which is updated more often, InfusionLog or ObsiKO?

InfusionLog ships an update every 4 months, and ObsiKO every 6 days. Most recently, InfusionLog was updated on October 12, 2026 and ObsiKO on October 10, 2026.

---

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