# Now Serving vs Engine RPM

The clearest difference is price: Now Serving at $0.99 against Engine RPM's $8.99. Now Serving also leads on review sentiment (62% vs 48%) and update cadence (every 8 months vs every 16 months). Engine RPM's advantage is chart position (#144 vs unranked) and ratings volume (35 vs 7). On rating, ads and in-app purchases there is nothing between them.

Now Serving costs $0.99 and Engine RPM $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.1 for Now Serving against 4.0 for Engine RPM. That said, the two scores are not equally well evidenced: Engine RPM has 35 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 62% of Now Serving's written reviews are positive against 48% of Engine RPM's.

Now Serving ships an update every 8 months, Engine RPM every 16 months. The most recent releases landed on September 27, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Now Serving | Engine RPM |
| --- | --- | --- |
| Price | **$0.99** | $8.99 |
| Rating | **[4.1 (7 ratings)](https://appshunter.io/ios/app/now-serving/id317787057/reviews)** | [4.0 (35 ratings)](https://appshunter.io/ios/app/engine-rpm/id340401811/reviews) |
| Number of ratings | 7 | **35** |
| Positive reviews | **61.5% of reviews** | 47.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 16 months |
| Monetization | Paid | **Free** |
| Best chart rank | — | **#144** |
| Size | 1 MB | 3 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | **iPhone, iPad, Apple TV, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Buzz Media](https://appshunter.io/developer/305814012) | [Real-Time Specialties](https://appshunter.io/developer/335568332) |

## What reviewers say

### Now Serving

[App page](https://appshunter.io/ios/app/now-serving/id317787057)

This utility app helps manage queues and lines by providing a simple digital number board. It allows users to increment numbers with a tap, decrement with a swipe, and reset to zero with a long press, bringing order to busy situations.

**Highlights:** Digital number board, Increment numbers with a tap, Decrement numbers with a swipe, Reset number to zero, Easy to use interface

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Engine RPM

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

**Currently charting:** #144 Top Paid · Utilities (US App Store)

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


## Frequently asked questions

### Is Now Serving free?

Now Serving costs $0.99, with no in-app purchases.

### Is Engine RPM free?

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

### Which has better reviews, Now Serving or Engine RPM?

Now Serving is rated higher. Now Serving averages 4.1 out of 5 from 7 ratings, while Engine RPM averages 4.0 from 35 ratings.

### Do Now Serving or Engine RPM have ads?

Neither Now Serving nor Engine RPM shows ads.

### Which is updated more often, Now Serving or Engine RPM?

Now Serving ships an update every 8 months, and Engine RPM every 16 months. Most recently, Now Serving was updated on September 27, 2026 and Engine RPM on October 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.*