# ずんだボイス「ずんだもん読み上げアプリ」 vs Calc

The clearest difference is ads: Calc at none against ずんだボイス「ずんだもん読み上げアプリ」's shown. Calc also leads on device support (4 vs 2). ずんだボイス「ずんだもん読み上げアプリ」's advantage is rating (4.5 vs 4.3) and ratings volume (362 vs 36). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. ずんだボイス「ずんだもん読み上げアプリ」 sells 2 in-app purchases, starting at $0.99 per month and Calc sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ずんだボイス「ずんだもん読み上げアプリ」 holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: ずんだボイス「ずんだもん読み上げアプリ」 has 362 ratings behind it against 36, so its average is the more settled of the two. Written reviews split almost evenly too, at 77% and 77% positive.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ずんだボイス「ずんだもん読み上げアプリ」 | Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (362 ratings)](https://appshunter.io/ios/app/id6468403059/reviews)** | [4.3 (36 ratings)](https://appshunter.io/ios/app/calc-desktop-mate-widgets/id6782669667/reviews) |
| Number of ratings | **362** | 36 |
| Positive reviews | 76.9% of reviews | **77.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 212 MB | 156 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Toraichi Igarashi](https://appshunter.io/developer/1704800739) | [インフィニットループ](https://appshunter.io/developer/507088117) |

## What reviewers say

### ずんだボイス「ずんだもん読み上げアプリ」

[App page](https://appshunter.io/ios/app/id6468403059)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription | $0.99 | per month |
| 買い切り | $9.99 | one-time |

**What reviewers like**

- 🚀 Efficient and easy to use
- 👍 Variety of voice options
- 💡 AI chat feature
- 🎨 Customizable voice settings
- 🎶 Composition capabilities

**What reviewers complain about**

- 🐛 Occasional crashes and freezes
- 🔍 Difficult to navigate due to Japanese-only interface
- ⏱️ Slow loading times for some features
- 🔊 Inconsistent audio quality

**Reported bugs**

- Lyrics input not working properly
- Unexpected audio distortion in certain cases
- Saved projects randomly deleted or corrupted

**Requested features**

- Add English language support
- Implement more advanced vocal tuning options
- Improve song composition tools
- Optimize performance and reduce loading times


### Calc

[App page](https://appshunter.io/ios/app/calc-desktop-mate-widgets/id6782669667)

This app adds a fun, interactive calculator experience with cute character reactions and customizable designs. It also features a unique 'Performance Mode' for playing music and hidden 'SP Answer Actions' for special character responses.

**Highlights:** Cute character reactions with button presses, Customizable calculator themes, Performance Mode for music playback, Hidden SP Answer Actions, Paid character DLCs available, Voice lines for each character

**Features:** Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Additional Character MEIKO | $2.99 | one-time |
| Additional Character KAITO | $2.99 | one-time |
| Additional Character Kagamine Rin | $2.99 | one-time |
| Additional Character Kagamine Len | $2.99 | one-time |
| Additional Character Megurine Luka | $2.99 | one-time |
| Additional Character Hatsune Miku | $2.99 | one-time |


## Frequently asked questions

### Is ずんだボイス「ずんだもん読み上げアプリ」 free?

ずんだボイス「ずんだもん読み上げアプリ」 is free to download, with in-app purchases available.

### Is Calc free?

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

### Which has better reviews, ずんだボイス「ずんだもん読み上げアプリ」 or Calc?

ずんだボイス「ずんだもん読み上げアプリ」 is rated higher. ずんだボイス「ずんだもん読み上げアプリ」 averages 4.5 out of 5 from 362 ratings, while Calc averages 4.3 from 36 ratings.

### Do ずんだボイス「ずんだもん読み上げアプリ」 or Calc have ads?

ずんだボイス「ずんだもん読み上げアプリ」 shows ads; Calc does not.

### Which is updated more often, ずんだボイス「ずんだもん読み上げアプリ」 or Calc?

ずんだボイス「ずんだもん読み上げアプリ」 ships an update weekly, and Calc weekly. Most recently, ずんだボイス「ずんだもん読み上げアプリ」 was updated on September 22, 2026 and Calc on September 23, 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.*