# Vision Source Exchange vs ABO & NCLE CLRE Exam Test Prep

Vision Source Exchange and ABO & NCLE CLRE Exam Test Prep both sit at 4.7 stars, but that hides the real split: 75% of Vision Source Exchange's written reviews are positive against 0% of ABO & NCLE CLRE Exam Test Prep's. Vision Source Exchange also leads on in-app purchases (none vs 9) and ratings volume (169 vs 24). ABO & NCLE CLRE Exam Test Prep's advantage is update cadence (every 4 months vs every 11 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. ABO & NCLE CLRE Exam Test Prep sells 9 in-app purchases, starting at $8.99 per 7 days. Vision Source Exchange asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Vision Source Exchange against 4.6 for ABO & NCLE CLRE Exam Test Prep. That said, the two scores are not equally well evidenced: Vision Source Exchange has 169 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 75% of Vision Source Exchange's written reviews are positive against 0% of ABO & NCLE CLRE Exam Test Prep's.

Vision Source Exchange ships an update every 11 months, ABO & NCLE CLRE Exam Test Prep every 4 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Vision Source Exchange | ABO & NCLE CLRE Exam Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (169 ratings)](https://appshunter.io/ios/app/vision-source-exchange/id1457848084/reviews)** | [4.6 (24 ratings)](https://appshunter.io/ios/app/abo-and-ncle-clre-exam-test-prep/id6738428611/reviews) |
| Number of ratings | **169** | 24 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 101 MB | 51 MB |
| Requires iOS | **14** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Vision Source](https://appshunter.io/developer/1143267672) | [Exam Prep OU](https://appshunter.io/developer/1689642184) |

## What reviewers say

### Vision Source Exchange

[App page](https://appshunter.io/ios/app/vision-source-exchange/id1457848084)

This app provides attendees with access to conference details for VS Exchange events. Users can view presentations, connect with exhibitors and other attendees, and take notes directly on presentation slides.

**Highlights:** Access conference details, View presentations, Connect with exhibitors, Network with attendees, Take notes on slides, Draw on presentation slides

**Features:** macOS Compatibility

**In-app purchases:** none


### ABO & NCLE CLRE Exam Test Prep

[App page](https://appshunter.io/ios/app/abo-and-ncle-clre-exam-test-prep/id6738428611)

Prepare for your Contact Lens Registry Certification (CLRE) exam with comprehensive study materials, realistic practice tests, and customizable flashcards. Track your progress, develop exam strategies, and create targeted study plans to boost your confidence and score higher.

**Highlights:** Comprehensive study materials, Realistic practice tests, Customizable flashcards, Progress tracking, Exam strategies, Targeted study plans

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CLRE Weekly Full Access | $8.99 | per 7 days |
| CLRE Monthly Full Access | $24.99 | per month |
| CLRE Monthly Full Access | $34.99 | per month |
| CLRE Quarterly Full Access | $55.99 | per 3 months |
| CLRE Quarterly Full Access | $59.99 | per 3 months |
| CLRE Semiannual Full Access | $75.99 | per 6 months |
| CLRE Semiannual Full Access | $79.99 | per 6 months |
| CLRE Annual Full Access | $109.99 | per year |
| CLRE Annual Full Access | $119.99 | per year |


## Frequently asked questions

### Is Vision Source Exchange free?

Vision Source Exchange is free to download, with no in-app purchases.

### Is ABO & NCLE CLRE Exam Test Prep free?

ABO & NCLE CLRE Exam Test Prep is free to download, with in-app purchases available.

### Which has better reviews, Vision Source Exchange or ABO & NCLE CLRE Exam Test Prep?

Vision Source Exchange is rated higher. Vision Source Exchange averages 4.7 out of 5 from 169 ratings, while ABO & NCLE CLRE Exam Test Prep averages 4.6 from 24 ratings.

### Do Vision Source Exchange or ABO & NCLE CLRE Exam Test Prep have ads?

Neither Vision Source Exchange nor ABO & NCLE CLRE Exam Test Prep shows ads.

### Which is updated more often, Vision Source Exchange or ABO & NCLE CLRE Exam Test Prep?

Vision Source Exchange ships an update every 11 months, and ABO & NCLE CLRE Exam Test Prep every 4 months. Most recently, Vision Source Exchange was updated on November 2, 2026 and ABO & NCLE CLRE Exam Test Prep on November 4, 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.*