# JIKAN vs OhMyDueDate

The clearest difference is in-app purchases: OhMyDueDate at none against JIKAN's 3. OhMyDueDate also leads on update cadence (fortnightly vs every 5 weeks). JIKAN's advantage is iOS requirement (15.0 vs 18.0). On price, ads 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. OhMyDueDate asks for nothing beyond the download.

JIKAN ships an update every 5 weeks, OhMyDueDate fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | JIKAN | OhMyDueDate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 69 MB | 24 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yosuke Ogata](https://appshunter.io/developer/1574464497) | [Kaoru Tsukamoto](https://appshunter.io/developer/1866927358) |

## 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 |


### OhMyDueDate

[App page](https://appshunter.io/ios/app/ohmyduedate/id6757434832)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JIKAN free?

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

### Is OhMyDueDate free?

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

### Do JIKAN or OhMyDueDate have ads?

Both JIKAN and OhMyDueDate show ads.

### Which is updated more often, JIKAN or OhMyDueDate?

JIKAN ships an update every 5 weeks, and OhMyDueDate fortnightly. Most recently, JIKAN was updated on October 28, 2026 and OhMyDueDate on October 28, 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.*