MyRPMCalc
C&S Industries, LLC
Getting the latest details from the App Store…
C&S Industries, LLC
Getting the latest details from the App Store…
Point your phone at a running engine and read its RPM instantly — no OBD adapter, no clip-on inductive sensor, no wiring. RPMCalc listens through your microphone and calculates engine speed straight from the sound of the exhaust or the engine itself. HOW IT WORKS Every engine's exhaust note has a fundamental firing frequency set by its cylinder count, stroke cycle, and RPM. RPMCalc analyzes that frequency in real time and converts it to a live RPM reading — accurate to the nearest 1 RPM on the
Top of Paid · Productivity in United Kingdom. MyRPMCalc is #44 there. Changes are over 7 days.
How the app presents itself on the App Store. Select a screenshot to open it full size.
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| United Kingdom· Paid · Productivity | #44 | New entry | Change unknown | #44 | 1 |
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
United Kingdom · Paid · Productivity: best #44, latest #44, over 16 snapshots since 9 Oct. No snapshots on 10 Oct, on 11 Oct, on 12 Oct, on 13 Oct, and on 14 Oct; the line joins the snapshots on either side.
Entries, big moves, #1s and new versions we've recorded.