# Lighting Ratio — Calculate contrast ratios

> Calculate contrast ratios (iPhone/iPad app by Davin Nguyen.)

- Source: https://appshunter.io/ios/app/lighting-ratio/id6741826632 (this page in markdown: same URL + `.md`)
- Developer: [Davin Nguyen](https://appshunter.io/developer/1680398335)
- Category: Photo & Video
- Price: Free
- Age rating: 4+
- Requires: iOS 16.5 · 2 MB
- Languages: American English
- Released: 2025-02-12
- Data updated: 2026-07-06
- User reviews in markdown: https://appshunter.io/ios/app/lighting-ratio/id6741826632/reviews.md

## What is Lighting Ratio?

Lighting Ratios makes exposure calculations quick for photography and film lighting.

• Calculate fill or background stops from any key light value
• Enter key and fill stops to instantly get contrast ratios
• Clear on-screen explanations with step-by-step math


## Version history (last 4 releases)

### 1.2.1 — 2026-02-04

Performance improvements

### 1.2 — 2025-09-07

• Now on Apple Watch

### 1.1 — 2025-05-07

Bug fixes
Updated Interface

### 1.0 — 2025-02-12

No release notes.

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## More apps by Davin Nguyen

- [Momentum Stories](https://appshunter.io/ios/app/momentum-stories/id6447318278)
- [Zone System](https://appshunter.io/ios/app/zone-system/id6741873549)
- [Therapy Notepad](https://appshunter.io/ios/app/therapy-notepad/id6744342891)
- [Daily Detox](https://appshunter.io/ios/app/daily-detox/id6744467532)
- [Production Safety](https://appshunter.io/ios/app/production-safety/id6745492731)

All apps by Davin Nguyen: https://appshunter.io/developer/1680398335

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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 2026-07-06.*