Comparison

Engine LD vs BuildWise

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Engine LD

Engine Layout Decision Making

About

Engine LD

Features

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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.

About

BuildWise

Features

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Download and follow building instructions for Young Engineers models — anytime, anywhere! Stay updated with the latest builds, work online or offline, and enjoy a student-friendly experience that makes learning fun and building easier than ever.

Screenshots

Engine LD4 screens

BuildWise4 screens

Verdict

The call

The clearest difference is price: BuildWise at Free against Engine LD's $2.99. BuildWise also leads on update cadence (every 6 weeks vs every 5 months). Engine LD's advantage is iOS requirement (13.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Engine LD ships an update every 5 months, BuildWise every 6 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 3 level

Engine LD versus BuildWise: the parameters behind the verdict, then further details
Parameter	Engine LD	BuildWise
Price	$2.99	Free — better
Update frequency	Every 5 months	Every 6 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	13.0 — better	16.0
Further details — not scored
Size	10 MB	52 MB
Age rating	4+	4+
Developer	DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI	E-Square Young Engineers Franchise Pvt. Ltd.

In-app purchases

None

Engine LD

No in-app purchases

None

BuildWise

No in-app purchases

Questions

Is Engine LD free?

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

Is BuildWise free?

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

Do Engine LD or BuildWise have ads?

Neither Engine LD nor BuildWise shows ads.

Which is updated more often, Engine LD or BuildWise?

Engine LD ships an update every 5 months, and BuildWise every 6 weeks. Most recently, Engine LD was updated on October 9, 2026 and BuildWise on October 3, 2026.