# Color Blindness Checker vs Smart Optometry

The clearest difference is in-app purchases: Color Blindness Checker at none against Smart Optometry's 10. Color Blindness Checker also leads on rating (4.7 vs 4.4). Smart Optometry's advantage is update cadence (every 4 months vs every 8 months) and review sentiment (42% vs 33%). On price, ads and device support there is nothing between them.

Both are free to download. Smart Optometry sells 10 in-app purchases, starting at $2.99 per month. Color Blindness Checker asks for nothing beyond the download.

Color Blindness Checker holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 113 and 529 respectively. Written reviews complicate that: 33% of Color Blindness Checker's written reviews are positive against 42% of Smart Optometry's, so the app with the better star average is not the one people write more warmly about.

Color Blindness Checker ships an update every 8 months, Smart Optometry every 4 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Color Blindness Checker | Smart Optometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (113 ratings)](https://appshunter.io/ios/app/color-blindness-checker/id824226320/reviews)** | [4.4 (529 ratings)](https://appshunter.io/ios/app/smart-optometry/id1053891266/reviews) |
| Number of ratings | 113 | **529** |
| Positive reviews | 33.3% of reviews | **42.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 33 MB | 28 MB |
| Requires iOS | 15.6 | **13** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Stefan Collette](https://appshunter.io/developer/641976775) | [Hundred Vision d.o.o.](https://appshunter.io/developer/1053891265) |

## What reviewers say

### Color Blindness Checker

[App page](https://appshunter.io/ios/app/color-blindness-checker/id824226320)

Quickly determine if you have color blindness with a simple test. This application provides a fast and accessible way to check for vision impairments related to color perception. Get results in under a minute.

**Highlights:** Color blindness test, Fast results, Accessible interface, Vision impairment check

**In-app purchases:** none


### Smart Optometry

[App page](https://appshunter.io/ios/app/smart-optometry/id1053891266)

This app offers eye care professionals a suite of 15 interactive and precise digital eye exams for patient screening and testing. It simplifies the examination process with clear guidelines, fast execution, and automated calculations, supporting a more efficient and accurate diagnostic workflow.

**Highlights:** 15 interactive digital eye exams, Automated calculation and diagnosis, Multi-language support, Vertex and visual acuity calculators, Simple and fast user interface, Precise and reliable results

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Monthly Subscription | $2.99 | per month |
| PRO Yearly Subscription | $22.99 | per year |
| Visual Acuity + Test | $1.99 | one-time |
| Red Desaturation Test | $1.99 | one-time |
| Generous Tip | $4.99 | one-time |
| Generous Tip! | $4.99 | one-time |
| Smart Optometry PRO | $9.99 | one-time |
| PRO Bundle | $9.99 | one-time |
| Massive Tip! | $9.99 | one-time |
| Amazing Tip! | $14.99 | one-time |

**What reviewers like**

- 👍 Excellent product
- 👍 Beautifully designed
- 👍 Highly accurate results
- 👍 Super easy to use
- 👍 Masterfully engineered

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 App does not open
- 🐛 App stops working
- 🐛 Requires payment for tests
- 🐛 App is full of ads

**Reported bugs**

- App crashes on startup
- App closes automatically after login
- App stops working after update
- Tests demand payment for Pro version
- Visual acuity unit converter plus button not working

**Requested features**

- Update visual acuity unit converter plus button
- Add inches option for measurement
- Provide explanations for test procedures and expected results
- Make Arabic language available
- Allow calibration of acuity test for different distances


## Frequently asked questions

### Is Color Blindness Checker free?

Color Blindness Checker is free to download, with no in-app purchases.

### Is Smart Optometry free?

Smart Optometry is free to download, with in-app purchases available.

### Which has better reviews, Color Blindness Checker or Smart Optometry?

Color Blindness Checker is rated higher. Color Blindness Checker averages 4.7 out of 5 from 113 ratings, while Smart Optometry averages 4.4 from 529 ratings.

### Do Color Blindness Checker or Smart Optometry have ads?

Neither Color Blindness Checker nor Smart Optometry shows ads.

### Which is updated more often, Color Blindness Checker or Smart Optometry?

Color Blindness Checker ships an update every 8 months, and Smart Optometry every 4 months. Most recently, Color Blindness Checker was updated on October 23, 2026 and Smart Optometry on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*