# Engine Calculator Plus vs COMPUSHIFT Setup

The clearest difference is price: COMPUSHIFT Setup at Free against Engine Calculator Plus's $2.99. COMPUSHIFT Setup also leads on rating (4.7 vs 3.3) and update cadence (monthly vs every 48 months). Engine Calculator Plus's advantage is iOS requirement (13 vs 15.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

COMPUSHIFT Setup is free to download; Engine Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

COMPUSHIFT Setup holds the better App Store score, 4.7 against 3.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

Engine Calculator Plus ships an update every 48 months, COMPUSHIFT Setup monthly. Both last shipped on November 2, 2026.

## The numbers

| Metric | Engine Calculator Plus | COMPUSHIFT Setup |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/engine-calculator-plus/id1355990764/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/compushift-setup/id1368793409/reviews)** |
| Number of ratings | 3 | **6** |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 19 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [HGM Automotive Electronics](https://appshunter.io/developer/1203617830) |

## What reviewers say

### Engine Calculator Plus

[App page](https://appshunter.io/ios/app/engine-calculator-plus/id1355990764)

Calculate engine specifications for various car and plane engines, including displacement, compression ratio, and horsepower. Supports metric and imperial systems with a user-friendly interface and 3D engine visualization.

**Highlights:** Engine displacement calculation, Compression ratio calculation, Horsepower estimation, Metric and Imperial support, 3D engine display, Copyable results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### COMPUSHIFT Setup

[App page](https://appshunter.io/ios/app/compushift-setup/id1368793409)

Configure and manage HGM COMPUSHIFT transmission controllers. Adjust shift and lockup points, access diagnostic data, and save custom configurations for your vehicle's transmission.

**Highlights:** Adjust shift points, Configure lockup points, View diagnostic data, Access transmission information, Save and edit configurations, Load configurations to controller

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Engine Calculator Plus free?

Engine Calculator Plus costs $2.99, with no in-app purchases.

### Is COMPUSHIFT Setup free?

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

### Which has better reviews, Engine Calculator Plus or COMPUSHIFT Setup?

COMPUSHIFT Setup is rated higher. Engine Calculator Plus averages 3.3 out of 5 from 3 ratings, while COMPUSHIFT Setup averages 4.7 from 6 ratings.

### Do Engine Calculator Plus or COMPUSHIFT Setup have ads?

Neither Engine Calculator Plus nor COMPUSHIFT Setup shows ads.

### Which is updated more often, Engine Calculator Plus or COMPUSHIFT Setup?

Engine Calculator Plus ships an update every 48 months, and COMPUSHIFT Setup monthly. Most recently, Engine Calculator Plus was updated on November 2, 2026 and COMPUSHIFT Setup on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*