# Calendar2015 vs AABアプリ

The clearest difference is ads: AABアプリ at none against Calendar2015's shown. On price, update cadence, 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.

Calendar2015 ships an update every 2 months, AABアプリ every 6 weeks. Both last shipped on October 8, 2026.

## The numbers

| Metric | Calendar2015 | AABアプリ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Ad-supported | — |
| Size | 24 MB | 16 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HISANORI KAMEYAMA](https://appshunter.io/developer/683895276) | [秋田朝日放送株式会社](https://appshunter.io/developer/1641072210) |

## What reviewers say

### Calendar2015

[App page](https://appshunter.io/ios/app/calendar2015/id965053421)

This app displays the current Gregorian and Japanese eras simultaneously, along with the current time. It offers a simple interface with customizable background colors and a quick age calculation feature. It's designed for quick date lookups and conversions.

**Highlights:** Simultaneous Gregorian and Japanese era display, Current time display with analog clock, Customizable background colors, Age calculation, Year difference calculation, Date conversion

**Features:** macOS Compatibility

**In-app purchases:** none


### AABアプリ

[App page](https://appshunter.io/ios/app/aab/id1641072208)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calendar2015 free?

Calendar2015 is free to download, with no in-app purchases.

### Is AABアプリ free?

AABアプリ is free to download, with no in-app purchases.

### Do Calendar2015 or AABアプリ have ads?

Calendar2015 shows ads; AABアプリ does not.

### Which is updated more often, Calendar2015 or AABアプリ?

Calendar2015 ships an update every 2 months, and AABアプリ every 6 weeks. Most recently, Calendar2015 was updated on October 8, 2026 and AABアプリ on October 8, 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.*