# 日本通信アプリ vs Quindecuple Calc

The clearest difference is ads: 日本通信アプリ at none against Quindecuple Calc'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.

日本通信アプリ ships an update fortnightly, Quindecuple Calc every 2 weeks. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 日本通信アプリ | Quindecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.8% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 55 MB | 36 MB |
| Requires iOS | **15.0** | 15.8.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Japan Communications Inc.](https://appshunter.io/developer/493542028) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### 日本通信アプリ

[App page](https://appshunter.io/ios/app/id1659613825)

**Features:** Vision Pro support

**In-app purchases:** none


### Quindecuple Calc

[App page](https://appshunter.io/ios/app/quindecuple-calc/id6742271873)

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

**In-app purchases:** none


## Frequently asked questions

### Is 日本通信アプリ free?

日本通信アプリ is free to download, with no in-app purchases.

### Is Quindecuple Calc free?

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

### Do 日本通信アプリ or Quindecuple Calc have ads?

Quindecuple Calc shows ads; 日本通信アプリ does not.

### Which is updated more often, 日本通信アプリ or Quindecuple Calc?

日本通信アプリ ships an update fortnightly, and Quindecuple Calc every 2 weeks. Most recently, 日本通信アプリ was updated on October 23, 2026 and Quindecuple Calc on October 17, 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.*