WorkMiles vs Acoustic Tachometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WorkMiles
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Need to keep a journal when using a car or other vehicle at work? Just curious about how much you drive and in what purpose? WorkMiles makes it easy! - Add trips quickly with minimal number of steps - Printer friendly PDF output with filter options - Tab-separated text file output for spreadsheets - Separate export language support - Multiple vehicles support - Single scene user interface - History scroller for overview and modifications - Date, type and comment filtering - Internet connection not required
Acoustic Tachometer
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Acoustic Tachometer estimates engine RPM from exhaust or engine sound using your iPhone microphone. Choose an engine profile, start listening, and watch the app lock onto the dominant firing frequency. The app reports RPM, confidence, harmonic support, and candidate frequencies so you can tune idle speed, compare engine behavior, and capture repeatable measurements without attaching hardware. Built for quick checks on cars, motorcycles, small engines, and rotary engines where a contact tachometer is inconvenient.
Screenshots
Verdict
The clearest difference is price: Acoustic Tachometer at Free against WorkMiles's $0.49. Acoustic Tachometer also leads on update cadence (monthly vs every 31 months). WorkMiles's advantage is device support (3 vs 1) and iOS requirement (13.6 vs 26.0). On ads 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
Acoustic Tachometer is free to download; WorkMiles costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.
WorkMiles ships an update every 31 months, Acoustic Tachometer monthly. The most recent releases landed on September 27, 2026 and October 17, 2026 respectively.
| Parameter | WorkMiles | Acoustic Tachometer |
|---|---|---|
| Price | $0.49 | Free — better |
| Update frequency | Every 31 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Compiled | Jan Sokol |
In-app purchases
WorkMiles
No in-app purchases
Acoustic Tachometer
No in-app purchases
Questions
Is WorkMiles free?
Is Acoustic Tachometer free?
Do WorkMiles or Acoustic Tachometer have ads?
Which is updated more often, WorkMiles or Acoustic Tachometer?
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