# Engine RPM vs All

The clearest difference is price: All at Free against Engine RPM's $8.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Engine RPM | All |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[4.0 (35 ratings)](https://appshunter.io/ios/app/engine-rpm/id340401811/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 47.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | — |
| Monetization | Free | — |
| Size | 3 MB | 24 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Real-Time Specialties](https://appshunter.io/developer/335568332) | [Ismail KESKIN](https://appshunter.io/developer/1855291146) |

## 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

**What reviewers like**

- 💰 Saves money vs. dedicated tachometer
- 🛠️ Useful for engine tuning/diagnostics
- ✅ Works well with correct settings
- 🏎️ Accurate for steady RPMs
- 💡 Ingenious app concept

**What reviewers complain about**

- 📉 Inaccurate or unreliable readings
- ❓ Difficult to configure/use
- 💸 Waste of money (for many)
- 😵 Confusing interface/settings
- ⚡ Not good for rapidly changing RPMs

**Reported bugs**

- 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

**Requested features**

- 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


### All

[App page](https://appshunter.io/ios/app/all-tee-v2/id6755655236)

**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 All free?

All is free to download, with no in-app purchases.

### Do Engine RPM or All have ads?

Neither Engine RPM nor All shows ads.

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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.*