# Engine LD vs Caltech Student Resources

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.

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.

## The numbers

| Metric | Engine LD | Caltech Student Resources |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caltech-student-resources/id1447483169/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 10 MB | 43 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588) | [California Institute of Technology](https://appshunter.io/developer/1447483168) |

## What reviewers say

### Engine LD

[App page](https://appshunter.io/ios/app/engine-ld/id930614716)

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

**In-app purchases:** none


### Caltech Student Resources

[App page](https://appshunter.io/ios/app/caltech-student-resources/id1447483169)

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.

**Highlights:** Access student support services, View Title IX resources, Find emergency contacts, Stay updated on campus news, Access student affairs information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Engine LD free?

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

### Is Caltech Student Resources free?

Caltech Student Resources is free to download, with no in-app purchases.

### Do Engine LD or Caltech Student Resources have ads?

Neither Engine LD nor Caltech Student Resources shows ads.

### Which is updated more often, Engine LD or Caltech Student Resources?

Engine LD ships an update every 5 months, and Caltech Student Resources every 2 months. Most recently, Engine LD was updated on October 9, 2026 and Caltech Student Resources on October 10, 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.*