# Engine Horsepower Calculator vs semco

The clearest difference is price: semco at Free against Engine Horsepower Calculator's $2.99. semco also leads on update cadence (fortnightly vs every 29 months). Engine Horsepower Calculator's advantage is iOS requirement (13 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

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

Engine Horsepower Calculator ships an update every 29 months, semco fortnightly. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Engine Horsepower Calculator | semco |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/engine-horsepower-calculator/id1095000562/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 1 MB | 75 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [semco GmbH](https://appshunter.io/developer/1458649632) |

## What reviewers say

### Engine Horsepower Calculator

[App page](https://appshunter.io/ios/app/engine-horsepower-calculator/id1095000562)

Estimate your vehicle's engine horsepower using different calculation methods based on weight, time, and speed. This tool provides estimations for quarter-mile runs.

**Highlights:** Estimate engine horsepower, Quarter-mile run calculations, ET Method calculation, Trap-speed Method calculation, RPM Torque Method calculation, Vehicle weight input

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

**In-app purchases:** none


### semco

[App page](https://appshunter.io/ios/app/semco-orga/id1458649633)

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

**In-app purchases:** none


## Frequently asked questions

### Is Engine Horsepower Calculator free?

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

### Is semco free?

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

### Do Engine Horsepower Calculator or semco have ads?

Neither Engine Horsepower Calculator nor semco shows ads.

### Which is updated more often, Engine Horsepower Calculator or semco?

Engine Horsepower Calculator ships an update every 29 months, and semco fortnightly. Most recently, Engine Horsepower Calculator was updated on November 2, 2026 and semco on October 29, 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.*