# Optical Calculator for ECPs vs KMK Optometry Coaching

The clearest difference is in-app purchases: KMK Optometry Coaching at none against Optical Calculator for ECPs's 2. KMK Optometry Coaching also leads on update cadence (weekly vs every 6 weeks) and rating (4.8 vs 4.5). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Optical Calculator for ECPs sells 2 in-app purchases, starting at $4.99 per month. KMK Optometry Coaching asks for nothing beyond the download.

KMK Optometry Coaching holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 27 and 34 respectively.

Optical Calculator for ECPs ships an update every 6 weeks, KMK Optometry Coaching weekly. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Optical Calculator for ECPs | KMK Optometry Coaching |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (27 ratings)](https://appshunter.io/ios/app/optical-calculator-for-ecps/id1146297178/reviews) | **[4.8 (34 ratings)](https://appshunter.io/ios/app/kmk-optometry-coaching/id1645627925/reviews)** |
| Number of ratings | 27 | **34** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Freemium | **Free** |
| Size | 11 MB | 131 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Lens Shapers](https://appshunter.io/developer/1279463389) | [KMK Optometry](https://appshunter.io/developer/1645627929) |

## What reviewers say

### Optical Calculator for ECPs

[App page](https://appshunter.io/ios/app/optical-calculator-for-ecps/id1146297178)

This medical app provides a suite of specialized optical calculation tools for eye care professionals. It offers features like lens thickness, vertex compensation, and prism compounding, with a focus on accuracy and ease of use. A subscription unlocks all current and future calculators.

**Highlights:** Stock Lens Cutout, Lens Thickness Calculation, Vertex Compensation, Rx Transpose, Prism Compounding, Contact Lens Rx, Tilt & Wrap Compensation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


### KMK Optometry Coaching

[App page](https://appshunter.io/ios/app/kmk-optometry-coaching/id1645627925)

This exclusive learning platform connects optometry students preparing for board exam retakes. It fosters inspiration and commitment through a supportive community, offering live feeds, collaborative spaces, and expert coaching sessions to enhance learning tactics and mindset.

**Highlights:** Live feed with quiz questions and learning tips, Collaborative 'Spaces' for focused study groups, Direct chat and collaboration with peers and coaches, Live streaming events with expert insights, Community support for board exam retakes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optical Calculator for ECPs free?

Optical Calculator for ECPs is free to download, with in-app purchases available.

### Is KMK Optometry Coaching free?

KMK Optometry Coaching is free to download, with no in-app purchases.

### Which has better reviews, Optical Calculator for ECPs or KMK Optometry Coaching?

KMK Optometry Coaching is rated higher. Optical Calculator for ECPs averages 4.5 out of 5 from 27 ratings, while KMK Optometry Coaching averages 4.8 from 34 ratings.

### Do Optical Calculator for ECPs or KMK Optometry Coaching have ads?

Neither Optical Calculator for ECPs nor KMK Optometry Coaching shows ads.

### Which is updated more often, Optical Calculator for ECPs or KMK Optometry Coaching?

Optical Calculator for ECPs ships an update every 6 weeks, and KMK Optometry Coaching weekly. Most recently, Optical Calculator for ECPs was updated on November 2, 2026 and KMK Optometry Coaching on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*