# Motor Pitch Analyzer vs Carpenter

The clearest difference is in-app purchases: Motor Pitch Analyzer at none against Carpenter's 1. Motor Pitch Analyzer also leads on iOS requirement (13.0 vs 17.0). Carpenter's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Carpenter sells 1 one-off in-app purchase. Motor Pitch Analyzer asks for nothing beyond the download.

## The numbers

| Metric | Motor Pitch Analyzer | Carpenter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/motor-pitch-analyzer/id6502329028/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Ad-supported | — |
| Size | 103 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shiho Masuda](https://appshunter.io/developer/500997902) | [Dmytro Polokhalo](https://appshunter.io/developer/1873442365) |

## What reviewers say

### Motor Pitch Analyzer

[App page](https://appshunter.io/ios/app/motor-pitch-analyzer/id6502329028)

Measure small motor rotation speed in real-time using your smartphone's microphone. View motor sound waveforms for rough guidance on shaft runout and brush conditions. Achieve better accuracy by narrowing the measurement range in a quiet environment.

**Highlights:** Real-time motor RPM measurement, Motor sound waveform visualization, Adjustable measurement range for accuracy, Analysis of shaft runout and brush conditions, Quiet environment measurement recommendation

**Features:** macOS Compatibility

**In-app purchases:** none


### Carpenter

[App page](https://appshunter.io/ios/app/carpenter-construction-calc/id6811256879)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Carpenter Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Motor Pitch Analyzer free?

Motor Pitch Analyzer is free to download, with no in-app purchases.

### Is Carpenter free?

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

### Do Motor Pitch Analyzer or Carpenter have ads?

Motor Pitch Analyzer shows ads; Carpenter does not.

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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.*