# Mac Tools vs ざっくり換算

The clearest difference is ads: Mac Tools at none against ざっくり換算's shown. Mac Tools also leads on device support (3 vs 1). ざっくり換算's advantage is update cadence (every 2 months vs every 22 months). On price, in-app purchases and iOS requirement there is nothing between them.

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

Mac Tools ships an update every 22 months, ざっくり換算 every 2 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Mac Tools | ざっくり換算 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/mac-tools-smartear-1/id673427942/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 12 MB | 4 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JS Products, Inc.](https://appshunter.io/developer/673417159) | [Masayuki Sato](https://appshunter.io/developer/1741867656) |

## What reviewers say

### Mac Tools

[App page](https://appshunter.io/ios/app/mac-tools-smartear-1/id673427942)

This utility transforms your smartphone into a sound and vibration detection tool. It assists technicians in pinpointing issues in vehicles and machinery by analyzing rattles, squeaks, and grinding noises. Requires specialized hardware to function.

**Highlights:** Sound and vibration detection, Locates defective or worn parts, User-friendly interface, Analog and digital display options, Adjustable sound settings, Informative user guide

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Mac Tools free?

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

### Is ざっくり換算 free?

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

### Do Mac Tools or ざっくり換算 have ads?

ざっくり換算 shows ads; Mac Tools does not.

### Which is updated more often, Mac Tools or ざっくり換算?

Mac Tools ships an update every 22 months, and ざっくり換算 every 2 months. Most recently, Mac Tools was updated on October 15, 2026 and ざっくり換算 on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*