# Snell's Law Calculator — Optics & Physics Angle Calc

> Optics & Physics Angle Calc (iPhone/iPad app by Tan Chia Ling.)

- Source: https://appshunter.io/ios/app/snells-law-calculator/id1414177526 (this page in markdown: same URL + `.md`)
- Developer: [Tan Chia Ling](https://appshunter.io/developer/321121189)
- Category: Utilities, Productivity
- Price: $3.99
- Age rating: 4+
- Requires: iOS 15.6 · 0 MB
- Languages: American English
- Released: 2018-08-04
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/snells-law-calculator/id1414177526/reviews.md

## What is Snell's Law Calculator?

Snell’s Law Calculator – Refraction & Refractive Index Tool

Snell’s Law Calculator is a powerful and easy-to-use physics calculator for solving light refraction problems instantly. Calculate the angle of incidence, angle of refraction, or refractive index with a real-time visual ray diagram and automatic formula updates.

Perfect for physics students, optics learners, teachers, and engineers. This calculator makes refraction calculations simple and precise.

Calculate Instantly
Solve for:
Angle of Incidence (θ₁)
Angle of Refraction (θ₂)
Refractive Index of Medium 1 (n₁)
Refractive Index of Medium 2 (n₂)
Based on the Snell’s Law formula:
n₁ · sin(θ₁) = n₂ · sin(θ₂)

All calculations update in real time as you adjust angles or refractive indices.

Interactive Visual Ray Diagram
- Live incident and refracted ray visualization
- Automatic angle display on diagram
- Clear interface between two media
- See how light bends when passing from air to water, glass, acrylic, diamond, and more
Perfect for understanding optics and wave behavior visually.

Built-in Material Presets
Quickly select common media:
- Air
- Water
- Ice
- Glass (Crown)
- Glass (Flint)
- Acrylic
- Diamond
Or manually enter custom refractive index values for advanced physics problems.

Designed for Precision
- Real-time calculation
- Supports up to 16 decimal places
- Adjustable sliders for fast input
- Manual numeric entry supported
- Degree/Radian unit display
- Copy results to other apps
- Formula shown for reference

Optimized for iPhone & iPad
- Clean, modern iOS design
- Lightweight and fast
- Works seamlessly on both iPhone and iPad
- Ad-free experience
- Privacy-focused — no unnecessary data collection

Perfect For
- High school physics students
- College optics courses
- Engineering calculations
- Homework and exam preparation
- Quick refractive index verification
Understand how light behaves at the boundary between two media and visualize refraction instantly.

Download Snell’s Law Calculator today and solve optics problems faster and more accurately.

Visit nitrio.com for more powerful calculator apps for iOS.


## Version history (last 4 releases)

### 1.5 — 2026-03-03

- Optimized for the latest devices.
- Fixed minor bugs.
- Improved and redesigned the UI.

### 1.2 — 2024-03-13

- Updated for the newest devices.
- Minor UI update.
- Minor bugs fixed.

### 1.1 — 2021-01-25

- Update for Newest Devices
- Bug Fixed

### 1.0 — 2018-08-03

No release notes.

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## More apps by Tan Chia Ling

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All apps by Tan Chia Ling: https://appshunter.io/developer/321121189

## Related topics

[paul gessinger](https://appshunter.io/ios/topics/paul-gessinger)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*