# Opticalc Contact Lens Calc — user reviews

> 11 indexed App Store user reviews of Opticalc Contact Lens Calc by Optical Directions Consulting, rated 3.70/5 from 3 ratings.

- Source: https://appshunter.io/ios/app/opticalc-contact-lens-calc/id309309095/reviews
- App overview in markdown: https://appshunter.io/ios/app/opticalc-contact-lens-calc/id309309095.md
- Rating breakdown: 5★ 2 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (10 lowest-rated)

### 1/5 — Watch app not working

*2019-10-16*

Watch app opening then goes black. Tried to contact developer but gives me an error. Will update stars if this gets fixed. Purchased Burke to support developer but not happy when I got to use on my watch

**Developer response:** Hi Tay
Sorry, I'm aware of that issue and will try to fix it when I can.

### 1/5 — OD

*2011-04-07*

I mostly work in plus cyl.  The calculator should be able to transpose to minus cyl much like the ToriTrack program available from CooperVision.

### 4/5 — Easy to use

*2019-03-14*

Have it installed on my phone for many years now, though only used it a handful of times since it launches but glad to see the developer still updating it and it does come in handy when I needed it. The app look much more modern then before and is still easy to use. Thanks for still keeping it updated

**Developer response:** Thanks. I use it myself, so I keep it updated!

### 4/5 — It Calculates Toric O'Rx

*2011-02-16*

Easy to use. Works.

### 4/5 — Update fixed problem I had (I omitted to change my rating)

*2009-07-08*

The update appears to have fixed all the problems and more flexible. Great app to help fitting torics

### 5/5 — Clean and nice

*2017-11-06*

Fast calculation and saves time.

### 5/5 — Vector math made easy

*2013-10-23*

Easy enough to calculate toric over refraction in front of the patient.

### 5/5 — Great app for a quick confirmation off the lens to order

*2012-04-06*

Works well

### 5/5 — A great app

*2012-03-09*

Very useful app for determining resultant cylinder Rx on toric lenses. I use this feature frequently.

### 5/5 — Two thumbs up

*2011-05-17*

Perfect contact lens app for getting a starting point on a new contact lens fit. Developer was very easy to contact and answered all my questions in a timely manner. Highly recommend.

## Most praised reviews (1 highest-rated)

### 5/5 — Works Great.

*2011-05-15*

Does what it promises. No, it doesn't convert to plus cyl, but is it really so difficult to do that math?

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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 2026-08-25.*