# Learn Quaternions — user reviews

> 1 indexed App Store user reviews of Learn Quaternions by Grant Jarvis, rated 2.00/5 from 1 ratings.

- Source: https://appshunter.io/ios/app/learn-quaternions/id1560497809/reviews
- App overview in markdown: https://appshunter.io/ios/app/learn-quaternions/id1560497809.md
- Rating breakdown: 5★ 0 · 4★ 0 · 3★ 0 · 2★ 1 · 1★ 0

## Most critical reviews (1 lowest-rated)

### 2/5 — Viewing area is always black!

*2023-03-16*

What a cool and useful visualizer idea!  Such great previews!
But when I launch the app the main viewing area is always black, except for the 3 switches.  Tried iPads, iPhones, dark and light modes.  Is there ANY setting where the visualizer is visible?  
Awaiting an answer or update, hoping to raise rather than lower my Star rating, please…

---

*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 2026-06-05.*