# POL Guide vs Optical Calculator for ECPs

The clearest difference is in-app purchases: POL Guide at none against Optical Calculator for ECPs's 2. POL Guide also leads on rating (5.0 vs 4.5) and iOS requirement (12.0 vs 18.0). Optical Calculator for ECPs's advantage is update cadence (every 6 weeks vs every 16 months) and ratings volume (27 vs 3). On price, 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. POL Guide asks for nothing beyond the download.

POL Guide holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Optical Calculator for ECPs has 27 ratings behind it against 3, so its average is the more settled of the two.

POL Guide ships an update every 16 months, Optical Calculator for ECPs every 6 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | POL Guide | Optical Calculator for ECPs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pol-guide/id927969758/reviews)** | [4.5 (27 ratings)](https://appshunter.io/ios/app/optical-calculator-for-ecps/id1146297178/reviews) |
| Number of ratings | 3 | **27** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 weeks** |
| Monetization | **Free** | Freemium |
| Size | 213 MB | 11 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [POL DOO BEOGRAD](https://appshunter.io/developer/1495537241) | [Lens Shapers](https://appshunter.io/developer/1279463389) |

## What reviewers say

### POL Guide

[App page](https://appshunter.io/ios/app/pol-guide/id927969758)

This app helps opticians visually demonstrate the distinctions between various lens materials, index types, and coatings to their clients. It serves as a professional tool for optical practices to enhance customer understanding and sales.

**Highlights:** Demonstrate lens material differences, Explain index types, Showcase lens coatings, Professional tool for opticians

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is POL Guide free?

POL Guide is free to download, with no in-app purchases.

### Is Optical Calculator for ECPs free?

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

### Which has better reviews, POL Guide or Optical Calculator for ECPs?

POL Guide is rated higher. POL Guide averages 5.0 out of 5 from 3 ratings, while Optical Calculator for ECPs averages 4.5 from 27 ratings.

### Do POL Guide or Optical Calculator for ECPs have ads?

Neither POL Guide nor Optical Calculator for ECPs shows ads.

### Which is updated more often, POL Guide or Optical Calculator for ECPs?

POL Guide ships an update every 16 months, and Optical Calculator for ECPs every 6 weeks. Most recently, POL Guide was updated on November 1, 2026 and Optical Calculator for ECPs on November 2, 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.*