# Digital Phoropter vs COA Practice Prep Test

The clearest difference is update cadence: Digital Phoropter at every 6 weeks against COA Practice Prep Test's every 3 months. COA Practice Prep Test's advantage is iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Digital Phoropter sells 5 in-app purchases, starting at $4.99 per month and COA Practice Prep Test sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Digital Phoropter ships an update every 6 weeks, COA Practice Prep Test every 3 months. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Digital Phoropter | COA Practice Prep Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/digital-phoropter/id1555952495/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 275 MB | 52 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ronald Baks](https://appshunter.io/developer/1555952042) | [3328833 Nova Scotia Limited](https://appshunter.io/developer/1757830011) |

## What reviewers say

### Digital Phoropter

[App page](https://appshunter.io/ios/app/digital-phoropter/id1555952495)

Practice and master refractive techniques with a virtual eye examination tool. Explore over two billion virtual test subjects and refine your skills with precise digital controls. Ideal for students, educators, and eye care professionals.

**Highlights:** Virtual refraction room, Over 2 billion virtual test subjects, 35+ movement directions, Spherical and cylindrical corrections, Realistic chat interactions, Generate and share refraction codes

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access 1 Month | $4.99 | per month |
| Basic Access | $14.49 | per year |
| Full Access 20% Off | $19.99 | per year |
| Full Access | $24.99 | per year |
| Full Access | $24.99 | per year |


### COA Practice Prep Test

[App page](https://appshunter.io/ios/app/coa-practice-prep-test/id6745927658)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |
| Lifetime Offer | $9.99 | one-time |


## Frequently asked questions

### Is Digital Phoropter free?

Digital Phoropter is free to download, with in-app purchases available.

### Is COA Practice Prep Test free?

COA Practice Prep Test is free to download, with in-app purchases available.

### Do Digital Phoropter or COA Practice Prep Test have ads?

Neither Digital Phoropter nor COA Practice Prep Test shows ads.

### Which is updated more often, Digital Phoropter or COA Practice Prep Test?

Digital Phoropter ships an update every 6 weeks, and COA Practice Prep Test every 3 months. Most recently, Digital Phoropter was updated on October 9, 2026 and COA Practice Prep Test on October 1, 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.*