# JIKAN vs Simple ToDo Diary

The clearest difference is ads: Simple ToDo Diary at none against JIKAN's shown. Simple ToDo Diary also leads on update cadence (daily vs monthly). JIKAN's advantage is iOS requirement (15.0 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. JIKAN sells 3 in-app purchases, starting at $4.99 per month and Simple ToDo Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

JIKAN ships an update monthly, Simple ToDo Diary daily. The most recent releases landed on September 15, 2026 and May 31, 2026 respectively.

## The numbers

| Metric | JIKAN | Simple ToDo Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Daily** |
| Size | 66 MB | 4 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yosuke Ogata](https://appshunter.io/developer/1574464497) | [Kazuya Hashimoto](https://appshunter.io/developer/1857972259) |

## What reviewers say

### JIKAN

[App page](https://appshunter.io/ios/app/jikan-countdown-app/id6747701096)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 【Monthly】Premium | $4.99 | per month |
| 【Annual】Premium | $29.99 | per year |
| 【Life Time】Premium | $29.99 | one-time |


### Simple ToDo Diary

[App page](https://appshunter.io/ios/app/simple-todo-diary/id6756016949)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示にする | $1.99 | one-time |


## Frequently asked questions

### Is JIKAN free?

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

### Is Simple ToDo Diary free?

Simple ToDo Diary is free to download, with in-app purchases available.

### Do JIKAN or Simple ToDo Diary have ads?

JIKAN shows ads; Simple ToDo Diary does not.

### Which is updated more often, JIKAN or Simple ToDo Diary?

JIKAN ships an update monthly, and Simple ToDo Diary daily. Most recently, JIKAN was updated on September 15, 2026 and Simple ToDo Diary on May 31, 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.*