# Simple Diary vs OcthoMind

The clearest difference is in-app purchases: Simple Diary at none against OcthoMind's 2. OcthoMind's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OcthoMind sells 2 one-off in-app purchases. Simple Diary asks for nothing beyond the download.

Simple Diary ships an update every 3 months, OcthoMind fortnightly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Simple Diary | OcthoMind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 8 MB | 12 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kana Uchida](https://appshunter.io/developer/1819475901) | [VOLKAN TEZKAN](https://appshunter.io/developer/1796866756) |

## What reviewers say

### Simple Diary

[App page](https://appshunter.io/ios/app/simple-diary-myjot/id6747032449)

**Features:** macOS Compatibility

**In-app purchases:** none


### OcthoMind

[App page](https://appshunter.io/ios/app/octhomind/id6794950699)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mount | $2.99 | one-time |
| alltime | $19.99 | one-time |


## Frequently asked questions

### Is Simple Diary free?

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

### Is OcthoMind free?

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

### Do Simple Diary or OcthoMind have ads?

Both Simple Diary and OcthoMind show ads.

### Which is updated more often, Simple Diary or OcthoMind?

Simple Diary ships an update every 3 months, and OcthoMind fortnightly. Most recently, Simple Diary was updated on October 30, 2026 and OcthoMind on October 25, 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.*