# 億兆電卓 vs Nagara 読み上げ

The clearest difference is iOS requirement: 億兆電卓 at 15.6 against Nagara 読み上げ's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

億兆電卓 ships an update every 6 days, Nagara 読み上げ every 3 days. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 億兆電卓 | Nagara 読み上げ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id1443248865/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Size | 1 MB | 1 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YouTeacher Inc.](https://appshunter.io/developer/423093933) | [Masayuki Yamaji](https://appshunter.io/developer/1270013649) |

## What reviewers say

### 億兆電卓

[App page](https://appshunter.io/ios/app/id1443248865)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nagara 読み上げ

[App page](https://appshunter.io/ios/app/nagara/id6787424622)

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

**In-app purchases:** none


## Frequently asked questions

### Is 億兆電卓 free?

億兆電卓 is free to download, with no in-app purchases.

### Is Nagara 読み上げ free?

Nagara 読み上げ is free to download, with no in-app purchases.

### Do 億兆電卓 or Nagara 読み上げ have ads?

Neither 億兆電卓 nor Nagara 読み上げ shows ads.

### Which is updated more often, 億兆電卓 or Nagara 読み上げ?

億兆電卓 ships an update every 6 days, and Nagara 読み上げ every 3 days. Most recently, 億兆電卓 was updated on October 15, 2026 and Nagara 読み上げ on October 16, 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.*