# BCMvideo — Colorblind simulator for BCM

> Colorblind simulator for BCM (iPhone/iPad app by Dean Monthei.)

- Source: https://appshunter.io/ios/app/bcmvideo/id6754721000 (this page in markdown: same URL + `.md`)
- Developer: [Dean Monthei](https://appshunter.io/developer/1849042003)
- Category: Education, Photo & Video
- Price: Free
- Age rating: 4+
- Requires: iOS 16.6 · 3 MB
- Languages: American English
- Released: 2025-11-20
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/bcmvideo/id6754721000/reviews.md

## What is BCMvideo?

This completely free app (no ads) is intended for family members, friends, teachers and others to better understand the impact Blue Cone Monochromacy (BCM) has on color vision.  BCM is a rare genetic condition the app developer has that causes severe colorblindness along with poor acuity (detail vision) and other vision problems.  The app removes red from the image which leaves blue and green intact.  This matches reasonably with BCM color vision in that with BCM S-cones which are sensitive to blue and rods which are sensitive to medium wavelengths (greens) are both active in medium bright indoor lighting.  For normal vision rods are mainly used for night vision but for a poorly understood reason are somehow suppressed in brighter light.  Normal vision is sensitive to red, green, and blue (trichromatic vision).  With BCM vision is largely sensitive only to green and blue (dichromatic 2 color vision).  For more details see the support web page.


## Version history (last 1 release)

### 1.0 — 2025-11-20

No release notes.

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## More apps by Dean Monthei

- [BCMphoto](https://appshunter.io/ios/app/bcmphoto/id6754615499)

All apps by Dean Monthei: https://appshunter.io/developer/1849042003

## Related topics

[bcmvideo](https://appshunter.io/ios/topics/bcmvideo)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*