Optical Calculator for ECPs
Quick, Accurate, Easy to Use
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
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.
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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
• 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.
The developer, Lens Shapers, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lens Shapers Inc.
- Size
- 11.5 MB
- Category
- Medical
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly $4.99
- Yearly $49.99
- Copyright
- © 2016 Lens Shapers