# Unit Converter vs ざっくり換算

The clearest difference is in-app purchases: ざっくり換算 at none against Unit Converter's 2. ざっくり換算 also leads on update cadence (every 2 months vs every 13 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Unit Converter sells 2 in-app purchases, starting at $4.99 per month. ざっくり換算 asks for nothing beyond the download.

Unit Converter ships an update every 13 months, ざっくり換算 every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Unit Converter | ざっくり換算 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/unit-converter/id1377049882/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 4 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Masayuki Sato](https://appshunter.io/developer/1741867656) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter/id1377049882)

This app offers a wide range of unit conversions for various measurements, from temperature to length. It features a user-friendly interface, customizable themes, and smart features that remember your frequent conversions. It also links to external apps for specialized tasks.

**Highlights:** Broad conversion spectrum, Personalizable themes, User-friendly interface, Smart features for frequent conversions, Links to specialized external apps

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unit Converter | $4.99 | per month |
| Unit Converter | $39.99 | per year |


### ざっくり換算

[App page](https://appshunter.io/ios/app/id6738019109)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is ざっくり換算 free?

ざっくり換算 is free to download, with no in-app purchases.

### Do Unit Converter or ざっくり換算 have ads?

Both Unit Converter and ざっくり換算 show ads.

### Which is updated more often, Unit Converter or ざっくり換算?

Unit Converter ships an update every 13 months, and ざっくり換算 every 2 months. Most recently, Unit Converter was updated on November 2, 2026 and ざっくり換算 on October 30, 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.*