# Ross Optical Calculator vs OptoFitting

The clearest difference is in-app purchases: Ross Optical Calculator at none against OptoFitting's 2. Ross Optical Calculator also leads on ratings volume (3 vs 1) and iOS requirement (12.4 vs 15.6). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. OptoFitting sells 2 in-app purchases, starting at $19.99 per month. Ross Optical Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Ross Optical Calculator against 5.0 for OptoFitting. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Ross Optical Calculator ships an update every 6 weeks, OptoFitting monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ross Optical Calculator | OptoFitting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/ross-optical-calculator/id1377878551/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/optofitting/id1576655068/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 16 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Ross Optical](https://appshunter.io/developer/1377878550) | [Alireza Nazer](https://appshunter.io/developer/1576655070) |

## What reviewers say

### Ross Optical Calculator

[App page](https://appshunter.io/ios/app/ross-optical-calculator/id1377878551)

This utility app provides a comprehensive calculator for a variety of optical equations. It is designed for ease of use, making complex calculations accessible on your mobile device.

**Highlights:** Optical equation calculator, Wide range of equations, Easy to use interface, Mobile accessibility

**Features:** macOS Compatibility

**In-app purchases:** none


### OptoFitting

[App page](https://appshunter.io/ios/app/optofitting/id1576655068)

Streamline progressive and single-vision lens fitting with precise, repeatable measurements. This app guides you through capturing key fitting parameters using a 3D printed jig and your device, reducing errors and speeding up the process for eyewear professionals.

**Highlights:** Precise fitting measurements, Step-by-step workflow, 3D printable jig included, Tutorial videos and FAQs, Reduces fitting errors, Fast workflow for professionals

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Month(+3 Month free) | $19.99 | per month |
| Premium 6 Month(+3 Month free) | $106.99 | per 6 months |


## Frequently asked questions

### Is Ross Optical Calculator free?

Ross Optical Calculator is free to download, with no in-app purchases.

### Is OptoFitting free?

OptoFitting is free to download, with in-app purchases available.

### Which has better reviews, Ross Optical Calculator or OptoFitting?

Ross Optical Calculator and OptoFitting are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Ross Optical Calculator or OptoFitting have ads?

Neither Ross Optical Calculator nor OptoFitting shows ads.

### Which is updated more often, Ross Optical Calculator or OptoFitting?

Ross Optical Calculator ships an update every 6 weeks, and OptoFitting monthly. Most recently, Ross Optical Calculator was updated on November 2, 2026 and OptoFitting on November 3, 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.*