TruthMarker vs Motor Pitch Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TruthMarker
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TruthMarker is used to annotate images with rich datatypes, including splines, lines and points, along with text and categorical values. The specific annotations used may be customized with an XML definition file.
Motor Pitch Analyzer
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.
- 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
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MotorPitchAnalyzer (MPA) is an app for measuring small motor rotation speed in real-time. Just bring the motor close to your smartphone's microphone for easy measurement! You can improve accuracy by narrowing the measurement range. The app shows the motor's maximum rotation speed based on stable rotation and frequency intensity. You can also quickly check for shaft runout and brush conditions by viewing the motor sound waveform in real-time (※ for rough guidance). Please measure in a quiet place for accurate results. Note that measurement accuracy may vary slightly depending on your iPhone or iPad's microphone performance.
Screenshots
Verdict
The clearest difference is device support: Motor Pitch Analyzer at 3 against TruthMarker's —. Motor Pitch Analyzer also leads on iOS requirement (13.0 vs 17.6). On price and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | TruthMarker | Motor Pitch Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Monthly |
| Ads | — | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | — | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 103 MB |
| Age rating | 4+ | 4+ |
| Developer | The University of Iowa (ITS) | Shiho Masuda |
In-app purchases
TruthMarker
No in-app purchases
Motor Pitch Analyzer
No in-app purchases
Questions
Is TruthMarker free?
Is Motor Pitch Analyzer free?
Other comparisons
