# IOR - Index of Refraction — user reviews

> 5 indexed App Store user reviews of IOR by Studio Orb, LLC, rated 3.23/5 from 177 ratings.

- Source: https://appshunter.io/ios/app/ior-index-of-refraction/id302943148/reviews
- App overview in markdown: https://appshunter.io/ios/app/ior-index-of-refraction/id302943148.md
- Rating breakdown: 5★ 62 · 4★ 22 · 3★ 27 · 2★ 30 · 1★ 37

## Most critical reviews (5 lowest-rated)

### 4/5 — Simple, Useful

*2009-11-05, version 0*

This app has a nice list of indicies. My only request would be a search function.

### 4/5 — Great for nde (ndt)

*2009-02-14, version 0*

Cool little app. If you're in the nondestructive testing field it's nice to have. It would be cool if you could depict the refraction between two materials (besides the orb). Not complaining though.

### 5/5 — Excellent resource

*2010-01-21, version 0*

Just needs search or at least the letter list on the right side of the screen while scrolling. With those additions I'd happily pay a buck or two for this.

### 5/5 — Sweet

*2009-04-24, version 0*

This will come in handy when using Mental ray. Thanks!

### 5/5 — Easy to use!!!!!

*2009-02-01, version 0*

This is an Excellent application and thanks for offering it for free!

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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 2026-07-06.*