Engine RPM vs Bestarc Home
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engine RPM
Analyze engine sound to calculate RPM using advanced signal processing. Ideal for engine setup and diagnostics, it supports various engine types and provides real-time feedback for accurate readings.
- Acoustic RPM measurement
- Engine sound analysis
- Supports 2-stroke/4-stroke engines
- Configurable cylinder count
- Real-time autocorrelation graph
- Adjustable update periods
- Low-pass filtering
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Measure the RPM of an engine by analyzing the sound it makes. Engine RPM listens to the sound of a running engine and uses advanced signal processing algorithms to extract the frequency of that sound and calculate the RPM. This app is primarily for setup and diagnostics of engines. After setting the the number of cylinders and whether the engine is a 2-stroke or 4-stroke engine, the app can work with any internal combustion engine, from diesel tractors to aircraft engines to motorcycles to chainsaws. To use the app you must set an expected RPM range to guide the analysis algorithms to the correct RPM. A real-time graph of the autocorrelation graph is displayed to help in troubleshooting and adjusting the expected RPM range. The analysis requires a clear sound from the engine without excessive interference from extraneous sounds. Do not expect to read the RPM of an engine while other things are making too much noise at the same time. The analysis also requires that the RPM be stable. It cannot read the RPM of an engine that is rapidly accelerating. For this reason, and because of the need for adjusting the expected RPM range, this app should not be considered a drop-in replacement for an operational tachometer. Setup options include update periods from 93 milliseconds to 1.5 seconds, one to 12 cylinders, 2-stroke or 4-stroke, low-pass filtering, and signal clipping. The overall RPM range is 400 to 90,000 RPM (although at any one time, the operational range is typically +/- 30% around a nominal expected RPM). Precision is usually about +/- 10 RPM.
Bestarc Home
Easily control your compatible plasma cutter remotely via Bluetooth. Adjust settings, monitor machine status, and troubleshoot issues with air pressure and fault codes. Optimize your cutting experience for various projects.
- Bluetooth remote control
- Adjustable cutting current
- Mode selection (2T/4T)
- Custom timing settings
- Save preferred settings
- Machine status monitoring
- Air-pressure alerts
- Fault-code display
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Take smarter control of your compatible plasma cutter with this easy-to-use mobile app. Connect via Bluetooth to adjust cutting current, switch operating modes, save preferred settings, and monitor machine status remotely. You can also view air-pressure information and fault codes for faster troubleshooting. Key Features: • Bluetooth remote control • Adjustable cutting current • 2T/4T mode selection • Custom PA and PT timing • Saved settings for different projects • Machine status monitoring • Air-pressure alerts • Fault-code display and remote diagnostics Designed for workshops, garages, farms, repair work, and DIY projects, the app makes plasma cutting more convenient and efficient. Please confirm that your machine supports app control before connecting. Bluetooth range may vary depending on the environment and mobile device. Always follow the equipment instructions and proper safety procedures.
Screenshots
Verdict
The clearest difference is price: Bestarc Home at Free against Engine RPM's $8.99. Bestarc Home also leads on rating (5.0 vs 4.0) and update cadence (every 10 days vs every 16 months). Engine RPM's advantage is ratings volume (35 vs 1) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases, monetization model and device support 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
Bestarc Home is free to download; Engine RPM costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Bestarc Home holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Engine RPM has 35 ratings behind it against 1, so its average is the more settled of the two.
Engine RPM ships an update every 16 months, Bestarc Home every 10 days. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.
| Parameter | Engine RPM | Bestarc Home |
|---|---|---|
| Price | $8.99 | Free — better |
| Rating | 4.0 (35 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 47.7% of reviews | — |
| Number of ratings | 35 — better | 1 |
| Update frequency | Every 16 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 81 MB |
| Age rating | 4+ | 17+ |
| Developer | Real-Time Specialties | ARCSONIC TECHNOLOGY CO.,LIMITED |
Customer experience
Engine RPM
Bestarc Home
Bugs and requests
Engine RPM
Reported bugs
12 issues- Does not register live RPM readings
- Displays incorrect or random numbers
- App opens then closes immediately
- Blank display or flashes incorrect data intermittently
- Cannot get consistent readings
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- Does not work on specific devices (e.g., iPhone 6)
- E-motor measurement not possible
- Readings are not accurate
- Cannot get a reliable reading
- Randomly skips between significantly different numbers
- Generates random numbers
- Does not recognize sound correctly
Requested features
5 requests- Save configuration settings
- Option to display cycle/cylinder count on home screen
- Improved response time for transient surges
- Simplified or automated setup process
- Auto-scaling graphical display for easier harmonic matching
Bestarc Home
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Engine RPM
No in-app purchases
Bestarc Home
No in-app purchases
Questions
Is Engine RPM free?
Is Bestarc Home free?
Which has better reviews, Engine RPM or Bestarc Home?
Do Engine RPM or Bestarc Home have ads?
Which is updated more often, Engine RPM or Bestarc Home?
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