# ToptiCalc Optics Calculator vs Hoya Sensor

The clearest difference is review sentiment: ToptiCalc Optics Calculator at 100% against Hoya Sensor's 0%. ToptiCalc Optics Calculator also leads on rating (5.0 vs 3.0). Hoya Sensor's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ToptiCalc Optics Calculator holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 100% of ToptiCalc Optics Calculator's written reviews are positive against 0% of Hoya Sensor's.

ToptiCalc Optics Calculator ships an update every 41 months, Hoya Sensor every 28 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | ToptiCalc Optics Calculator | Hoya Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/topticalc-optics-calculator/id919586984/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/hoya-sensor/id1202812114/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 28 months** |
| Monetization | Free | Free |
| Size | 2 MB | 31 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Toptica Photonics AG](https://appshunter.io/developer/919586983) | [Hoya Holdings NV](https://appshunter.io/developer/492618708) |

## What reviewers say

### ToptiCalc Optics Calculator

[App page](https://appshunter.io/ios/app/topticalc-optics-calculator/id919586984)

This application provides essential calculations and conversions for laser optics, covering areas like spectral unit conversion, Fabry-Perot calculations, and Gaussian beam focusing. It's designed to be a convenient tool for quick access to important optical formulas.

**Highlights:** Spectral Unit Conversion, Fabry-Perot Calculations, Gaussian Beam Focusing, Refraction at a Plane Surface, Short Laser Pulse Calculations, Pulse Train Calculations, Decibel Conversion

**In-app purchases:** none


### Hoya Sensor

[App page](https://appshunter.io/ios/app/hoya-sensor/id1202812114)

This app educates patients about blue light and UV protection lenses through simulations and images. It also allows for measuring blue light and UV radiation from various sources with a special device.

**Highlights:** Blue light blocking lens explanation, Blue light and UV radiation measurement, Simulations and images, Patient education tool, UV protection lens benefits

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

**In-app purchases:** none


## Frequently asked questions

### Is ToptiCalc Optics Calculator free?

ToptiCalc Optics Calculator is free to download, with no in-app purchases.

### Is Hoya Sensor free?

Hoya Sensor is free to download, with no in-app purchases.

### Which has better reviews, ToptiCalc Optics Calculator or Hoya Sensor?

ToptiCalc Optics Calculator is rated higher. ToptiCalc Optics Calculator averages 5.0 out of 5 from 4 ratings, while Hoya Sensor averages 3.0 from 2 ratings.

### Do ToptiCalc Optics Calculator or Hoya Sensor have ads?

Neither ToptiCalc Optics Calculator nor Hoya Sensor shows ads.

### Which is updated more often, ToptiCalc Optics Calculator or Hoya Sensor?

ToptiCalc Optics Calculator ships an update every 41 months, and Hoya Sensor every 28 months. Most recently, ToptiCalc Optics Calculator was updated on November 1, 2026 and Hoya Sensor 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.*