# GF Device Link vs Motor Pitch Analyzer

The clearest difference is ads: GF Device Link at none against Motor Pitch Analyzer's shown. GF Device Link also leads on iOS requirement (11.0 vs 13.0). Motor Pitch Analyzer's advantage is update cadence (monthly vs every 5 months). On price, in-app purchases and device support there is nothing between them.

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

GF Device Link ships an update every 5 months, Motor Pitch Analyzer monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | GF Device Link | Motor Pitch Analyzer |
| --- | --- | --- |
| 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 | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 41 MB | 103 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [G FORCE, K.K.](https://appshunter.io/developer/863835209) | [Shiho Masuda](https://appshunter.io/developer/500997902) |

## What reviewers say

### GF Device Link

[App page](https://appshunter.io/ios/app/gf-device-link/id1563122183)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is GF Device Link free?

GF Device Link is free to download, with no in-app purchases.

### Is Motor Pitch Analyzer free?

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

### Do GF Device Link or Motor Pitch Analyzer have ads?

Motor Pitch Analyzer shows ads; GF Device Link does not.

### Which is updated more often, GF Device Link or Motor Pitch Analyzer?

GF Device Link ships an update every 5 months, and Motor Pitch Analyzer monthly. Most recently, GF Device Link was updated on October 25, 2026 and Motor Pitch Analyzer on October 25, 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.*