# Engine RPM vs Slacker Virtual Remote

The clearest difference is review sentiment: Slacker Virtual Remote at 100% against Engine RPM's 48%. Slacker Virtual Remote also leads on price (Free vs $8.99) and rating (5.0 vs 4.0). Engine RPM's advantage is ratings volume (35 vs 2). On ads, in-app purchases, monetization model and device support there is nothing between them.

Slacker Virtual Remote is free to download; Engine RPM costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Slacker Virtual Remote 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 2, so its average is the more settled of the two. Written reviews point the same way: 48% of Engine RPM's written reviews are positive against 100% of Slacker Virtual Remote's.

Engine RPM ships an update every 26 months, Slacker Virtual Remote every 6 months. The most recent releases landed on September 19, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Engine RPM | Slacker Virtual Remote |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | [4.0 (35 ratings)](https://appshunter.io/ios/app/engine-rpm/id340401811/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/slacker-virtual-remote/id1518520216/reviews)** |
| Number of ratings | **35** | 2 |
| Positive reviews | 48.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 3 MB | 27 MB |
| Requires iOS | 13.0 | **12.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Real-Time Specialties](https://appshunter.io/developer/335568332) | [Motool Inc](https://appshunter.io/developer/1444719112) |

## What reviewers say

### Engine RPM

[App page](https://appshunter.io/ios/app/engine-rpm/id340401811)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


### Slacker Virtual Remote

[App page](https://appshunter.io/ios/app/slacker-virtual-remote/id1518520216)

Transform your smartphone into a remote display for a digital suspension tuner. View real-time measurements and control device functions like reset and auto-zero. This version offers core remote capabilities without saving settings.

**Highlights:** Remote display for suspension tuner, Real-time measurement viewing, Control reset function, Control auto-zero function, Bluetooth connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Engine RPM free?

Engine RPM costs $8.99, with no in-app purchases.

### Is Slacker Virtual Remote free?

Slacker Virtual Remote is free to download, with no in-app purchases.

### Which has better reviews, Engine RPM or Slacker Virtual Remote?

Slacker Virtual Remote is rated higher. Engine RPM averages 4.0 out of 5 from 35 ratings, while Slacker Virtual Remote averages 5.0 from 2 ratings.

### Do Engine RPM or Slacker Virtual Remote have ads?

Neither Engine RPM nor Slacker Virtual Remote shows ads.

### Which is updated more often, Engine RPM or Slacker Virtual Remote?

Engine RPM ships an update every 26 months, and Slacker Virtual Remote every 6 months. Most recently, Engine RPM was updated on September 19, 2026 and Slacker Virtual Remote on September 16, 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.*