# Engine LD — Engine Layout Decision Making

> Engine Layout Decision Making (iPhone/iPad app by DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI.)

- Source: https://appshunter.io/ios/app/engine-ld/id930614716 (this page in markdown: same URL + `.md`)
- Developer: [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588)
- Category: Education, Utilities
- Price: $2.99
- Age rating: 4+
- Requires: iOS 13.0 · 10 MB
- Languages: English
- Released: 2014-11-25
- Data updated: 2026-07-18
- User reviews in markdown: https://appshunter.io/ios/app/engine-ld/id930614716/reviews.md

## What is Engine LD?

Engine Layout Definitions (Engine LD)

Understand how piston–crank geometry impacts engine performance.
	•	Explore how layout changes affect engine displacement, rated power, and dynamic forces.
	•	View detailed graphs and data lists:
	•	Displacement volume vs. crank angle
	•	Dynamic forces vs. crank angle
	•	Export values for spreadsheet analysis or basic FEA (finite element analysis).
	•	Interactive simulation: adjust crank rotation with a slider to visualize dimension effects on engine packaging.

## Chart rankings

- #187 in Top Paid · Education (US App Store)


## Version history (last 5 releases)

### 1.620 — 2025-08-23

Bug fixes and feature improvements

### 1.610 — 2023-10-01

Compatibility update :)

### 1.600 — 2022-12-05

Compatibility update :)

### 1.590 — 2021-10-02

Compatibility update for future iOS versions and devices.

### 1.580 — 2020-06-04

Compatibility update for future iOS versions.

## Apps similar to Engine LD

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Car Mechanic Quiz-Pro](https://appshunter.io/ios/app/car-mechanic-quiz-pro/id6449925694) | 5.0 (2) | $5.99 | Education |
| [Trans4motor R](https://appshunter.io/ios/app/trans4motor-r/id6739180076) | 4.3 (6) | $7.99 | Education |
| [2 Stroke Petrol](https://appshunter.io/ios/app/2-stroke-petrol/id6472241848) | — | Free | Education |
| [SymCalc+](https://appshunter.io/ios/app/symcalc-plus/id1275900301) | 4.7 (90) | $9.99 | Education |
| [Civil Engineering Calculators](https://appshunter.io/ios/app/civil-engineering-calculators/id673068400) | 4.8 (12) | $19.99 | Education |
| [Engineering Mathematics Pro](https://appshunter.io/ios/app/engineering-mathematics-pro/id6759188492) | — | $0.49 | Education |

## More apps by DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI

- [Mohr's CSA](https://appshunter.io/ios/app/mohrs-csa/id914295585)
- [Goodman FAD](https://appshunter.io/ios/app/goodman-fad/id923701120)
- [ODE Solver](https://appshunter.io/ios/app/ode-solver/id982923512)
- [Chatting Calculator](https://appshunter.io/ios/app/chatting-calculator/id982924697)
- [Engineering 8D](https://appshunter.io/ios/app/engineering-8d/id1035570380)

All apps by DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI: https://appshunter.io/developer/914295588

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-18.*