Engine LD vs Caltech Student Resources
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engine LD
Read full descriptionHide full description
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.
Caltech Student Resources
This app provides Caltech students with easy access to essential resources, including support services, Title IX information, and emergency contacts. It also keeps students updated on the latest campus news and announcements.
- Access student support services
- View Title IX resources
- Find emergency contacts
- Stay updated on campus news
- Access student affairs information
Read full descriptionHide full description
Welcome to the Caltech Student Resources (CSR) mobile app! Designed specifically for Caltech Students, the CSR app allows you to easily: • Access student resources, including student support services, Title IX resources, emergency contacts and much more. • Stay informed on the latest news and updates. To learn more, please download our app or visit us online at http://www.studaff.caltech.edu/. Caltech Student Affairs 1200 E California Blvd Pasadena, CA 91125 626-395-6100
Screenshots
Verdict
The clearest difference is price: Caltech Student Resources at Free against Engine LD's $2.99. Caltech Student Resources also leads on update cadence (every 2 months vs every 5 months). On ads, in-app purchases, device support and iOS requirement 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
Caltech Student Resources is free to download; Engine LD costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Engine LD ships an update every 5 months, Caltech Student Resources every 2 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.
| Parameter | Engine LD | Caltech Student Resources |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI | California Institute of Technology |
In-app purchases
Engine LD
No in-app purchases
Caltech Student Resources
No in-app purchases
Questions
Is Engine LD free?
Is Caltech Student Resources free?
Do Engine LD or Caltech Student Resources have ads?
Which is updated more often, Engine LD or Caltech Student Resources?
Other comparisons
