# Crack OAT Optometry Test Prep vs WesternU CSL

The clearest difference is iOS requirement: WesternU CSL at 15.6 against Crack OAT Optometry Test Prep's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on July 7, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Crack OAT Optometry Test Prep | WesternU CSL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (37 ratings)](https://appshunter.io/ios/app/crack-oat-optometry-test-prep/id1323462344/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Free | — |
| Size | 32 MB | 22 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Crack Exam Preparation Software, LLC](https://appshunter.io/developer/1076616463) | [Western University of Health Sciences](https://appshunter.io/developer/498825675) |

## What reviewers say

### Crack OAT Optometry Test Prep

[App page](https://appshunter.io/ios/app/crack-oat-optometry-test-prep/id1323462344)

Prepare for the Optometry Admission Test with extensive video crash courses, over 20,000 flashcards, and numerous practice tests. This tool aims to help you score higher and save study time, increasing your chances of acceptance into optometry school.

**Highlights:** 100+ hours of OAT crash course videos, Over 20,000 OAT flashcards, Simulate OAT with practice tests, 3000+ practice questions with explanations, Full-length diagnostic tests, Improve test-taking skills

**In-app purchases:** none


### WesternU CSL

[App page](https://appshunter.io/ios/app/westernu-csl/id1435945874)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crack OAT Optometry Test Prep free?

Crack OAT Optometry Test Prep is free to download, with no in-app purchases.

### Is WesternU CSL free?

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

### Do Crack OAT Optometry Test Prep or WesternU CSL have ads?

Neither Crack OAT Optometry Test Prep nor WesternU CSL shows ads.

### Which is updated more often, Crack OAT Optometry Test Prep or WesternU CSL?

Crack OAT Optometry Test Prep ships an update every 5 months, and WesternU CSL every 5 months. Most recently, Crack OAT Optometry Test Prep was updated on July 7, 2026 and WesternU CSL on September 8, 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.*