# Optical Calculator for ECPs — Quick, Accurate, Easy to Use

> Specialized optical calculation tools for eye care professionals. (iPhone/iPad app by Lens Shapers.)

- Source: https://appshunter.io/ios/app/optical-calculator-for-ecps/id1146297178 (this page in markdown: same URL + `.md`)
- Developer: [Lens Shapers](https://appshunter.io/developer/1279463389)
- Category: Medical, Business
- Price: Free with in-app purchases
- Rating: 4.50/5 from 27 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 11 MB
- Languages: American English
- Released: 2017-07-15
- Data updated: 2026-09-02
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/optical-calculator-for-ecps/id1146297178/reviews.md

## What is Optical Calculator for ECPs?

The best Optical Calculator on the App Store.

• Stock Lens Cutout
• Lens Thickness
• Vertex Compensation
• Rx Transpose
• Intermediate Rx
• Prism Compounding
• Contact Lens Rx
• Induced Prism
• Tilt & Wrap Compensation
• Crossed Cylinders
• Resolving Prism
• Spectacle Magnification
• Vertical Imbalance Compensation
• Power in Oblique Meridians

If you want another calculator, let us know and we will add it.

The app is easy to use and to the point.
______________________________________________
About Subscription:
• You may subscribe to our service for a free trial. This subscription auto-renews yearly at the specified price.
• This subscription provides you full access to all our current and future optical calculators.
• Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
• The account will be charged for renewal within 24-hours prior to the end of the current period.
• Payment will be charged to your iTunes Account at confirmation of purchase.
• You may manage the subscription and auto-renewal may be turned off by going to the user's Account Settings after purchase.
• Any unused portion of a free trial period will be forfeited when you purchase the subscription.
• Privacy policy: http://www.lens-shapers.com/privacy
• Terms of use: http://www.lens-shapers.com/terms

## Key features

- Stock Lens Cutout
- Lens Thickness Calculation
- Vertex Compensation
- Rx Transpose
- Prism Compounding
- Contact Lens Rx
- Tilt & Wrap Compensation

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly | $49.99 | per year |
| Monthly | $4.99 | per month |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/optical-calculator-for-ecps/id1146297178/reviews.md

### 1/5 — All features are locked out

*2021-07-28*

No way to know if the app is useful with everything locked out. not gonna pay to find out

**Developer response:** You get a 3 days trial to find out if you like it. Cancel any time within 3 days if you do not like it and you do not pay anything.

### 1/5 — No stars rip off

*2018-08-19*

Just crashes how do Apple let this rip off steal my money, support don’t want to know, #stealing

**Developer response:** Please email us at support@lens-shapers.com if you are still facing this issue and we will help you fix it.

## Frequently asked questions about Optical Calculator for ECPs

### What is Optical Calculator for ECPs?

Optical Calculator for ECPs is a medical app offering specialized tools for eye care professionals. It calculates various optical parameters such as lens thickness, vertex compensation, and prism compounding, aiming for accuracy and ease of use.

### What features does Optical Calculator for ECPs offer?

The app includes features like Stock Lens Cutout, Lens Thickness, Vertex Compensation, Rx Transpose, Intermediate Rx, Prism Compounding, Contact Lens Rx, Induced Prism, Tilt & Wrap Compensation, Crossed Cylinders, Resolving Prism, Spectacle Magnification, Vertical Imbalance Compensation, and Power in Oblique Meridians.

### How much does Optical Calculator for ECPs cost?

The app is free to download and offers a free trial for its subscription service. Subscription plans include Monthly at $4.99/P1M and Yearly at $49.99/P1Y, both with a 3-day free trial.

### Does Optical Calculator for ECPs have ads?

No, this application does not contain advertisements. It is ad-free, focusing on providing a clean user experience for its specialized calculations.

### What devices support Optical Calculator for ECPs?

Optical Calculator for ECPs is available on iPhone, iPad, and iPod devices. It is designed to be compatible with Apple's mobile operating systems.

### How often is Optical Calculator for ECPs updated?

The app was last updated on October 6, 2023, with version 1.7. This indicates a history of updates, suggesting ongoing development and support from the developer.

### What is the user rating for Optical Calculator for ECPs?

Optical Calculator for ECPs has a strong rating of 4.5 stars based on 26 ratings. This suggests a generally positive user sentiment regarding its functionality and usability.

### Can I cancel my Optical Calculator for ECPs subscription?

Yes, you can manage your subscription and turn off auto-renewal at least 24 hours before the end of the current period. You can do this by going to your Account Settings after purchase.

## Version history (last 5 releases)

### 2.0 — 2026-04-16

• Added Home Screen Quick Actions so you can jump straight to recent calculators.
• Added a new “Watch Tutorial” option in the side menu for faster onboarding.
• Improved layouts and typography across key calculators, especially Intermediate Rx and Induced Prism.
• Improved slider/stepper input behavior for smoother, more precise adjustments.
• Added Favorites so your preferred calculators stay saved.
• General fixes and stability improvements.

### 1.7 — 2023-10-06

Bug fixes and improvements.

### 1.6 — 2023-09-21

Calculators Improvements:
• Improved Stock Lens Cutout calculator now incorporates B size and OC height for better accuracy.
• Improved Lens Thickness calculator now incorporates B size and OC heights for better accuracy.
• OC will stay locked to B/2 unless manually changed.
• Resultant Zero Cyl and Zero Axis values now show as -- for ease of understanding.

UI Improvements:
• Slider has been moved to the right to avoid accidental app menu activation.

Other bug fixes and improvements.

### 1.5.1 — 2020-08-13

• Bug fixes and improvements.

### 1.5 — 2019-05-02

- Eight New Calculators:
• Contact Lens Rx
• Induced Prism
• Tilt & Wrap Compensation
• Crossed Cylinders
• Resolving Prism
• Spectacle Magnification
• Vertical Imbalance Compensation
• Power in Oblique Meridians

- Added slider for easier data entry.
- Now you can single tap to switch toggle values like In/Out, Up/Down prism directions etc.
- Improved font sizing for easier readability.
- Other bug fixes and improvements.
- Optimized for iPad Pro 12.9"

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## More apps by Lens Shapers

- [Progressive Identifier for ECP](https://appshunter.io/ios/app/progressive-identifier-for-ecp/id1365601702)
- [Optical Measurements for ECPs](https://appshunter.io/ios/app/optical-measurements-for-ecps/id1438873916)
- [Rx Verification for ECPs](https://appshunter.io/ios/app/rx-verification-for-ecps/id1462323138)
- [Lens Cutout for ECPs](https://appshunter.io/ios/app/lens-cutout-for-ecps/id1477714932)
- [Frame Assist](https://appshunter.io/ios/app/frame-assist/id1480693354)

All apps by Lens Shapers: https://appshunter.io/developer/1279463389

## Related topics

[optician](https://appshunter.io/ios/topics/optician) · [liingo](https://appshunter.io/ios/topics/liingo)

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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 2026-09-02.*