# SLAPS vs Akatsuki Calendar 暦と六曜カレンダー

The clearest difference is update cadence: Akatsuki Calendar 暦と六曜カレンダー at every 3 days against SLAPS's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

SLAPS ships an update fortnightly, Akatsuki Calendar 暦と六曜カレンダー every 3 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SLAPS | Akatsuki Calendar 暦と六曜カレンダー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 72 MB | 96 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Decentier, Inc.](https://appshunter.io/developer/1779922466) | [Akatsuki Design](https://appshunter.io/developer/1892779641) |

## What reviewers say

### SLAPS

[App page](https://appshunter.io/ios/app/slaps/id6741577881)

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

**In-app purchases:** none


### Akatsuki Calendar 暦と六曜カレンダー

[App page](https://appshunter.io/ios/app/akatsuki-calendar/id6762072842)

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

**In-app purchases:** none


## Frequently asked questions

### Is SLAPS free?

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

### Is Akatsuki Calendar 暦と六曜カレンダー free?

Akatsuki Calendar 暦と六曜カレンダー is free to download, with no in-app purchases.

### Do SLAPS or Akatsuki Calendar 暦と六曜カレンダー have ads?

Neither SLAPS nor Akatsuki Calendar 暦と六曜カレンダー shows ads.

### Which is updated more often, SLAPS or Akatsuki Calendar 暦と六曜カレンダー?

SLAPS ships an update fortnightly, and Akatsuki Calendar 暦と六曜カレンダー every 3 days. Most recently, SLAPS was updated on November 4, 2026 and Akatsuki Calendar 暦と六曜カレンダー on November 5, 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.*