# CL-2 — Refraction over contact lenses

> Refraction over contact lenses (iPhone/iPad app by Nicolas Augsburger Rossi.)

- Source: https://appshunter.io/ios/app/cl-2/id6768534815 (this page in markdown: same URL + `.md`)
- Developer: [Nicolas Augsburger Rossi](https://appshunter.io/developer/1803162820)
- Category: Medical, Utilities
- Price: $5.99
- Age rating: 4+
- Requires: iOS 15.6 · 7 MB
- Languages: English
- Released: 2026-05-18
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/cl-2/id6768534815/reviews.md

## What is CL?

This app handles the oblique axis formula automatically — combining the residual refraction with the lens in situ using vector cylinder addition. No matter how much the astigmatism has shifted, you get the correct new contact lens parameters instantly. Built for practitioners who need accuracy, not approximations. 
- Switch instantly between a clean light interface and a deep dark theme. Optimized for every lighting condition, whether you're in a bright showroom or a dimly lit consulting room. 
- Export the current patient card as a high-quality image and share it instantly — via message, email, or any app on your device.


## Version history (last 5 releases)

### 1.4.6 — 2026-06-21

Minor improvements

### 1.4.2 — 2026-06-03

Minor improvements

### 1.2.6 — 2026-05-25

Minor improvements

### 1.2.4 — 2026-05-20

Added custom keyboard and small improvements

### 1.1.2 — 2026-05-18

No release notes.

## More apps by Nicolas Augsburger Rossi

- [ARN-Music 3-4](https://appshunter.io/ios/app/arn-music-3-4/id6743497768)
- [ARN G6 3-4](https://appshunter.io/ios/app/arn-g6-3-4/id6743498770)
- [ARN-Music 3](https://appshunter.io/ios/app/arn-music-3/id6743633914)
- [ARN B5 3-4](https://appshunter.io/ios/app/arn-b5-3-4/id6744575536)
- [ARN B4 3-4](https://appshunter.io/ios/app/arn-b4-3-4/id6744577173)
- [CL-1](https://appshunter.io/ios/app/cl-1/id6767980060)

All apps by Nicolas Augsburger Rossi: https://appshunter.io/developer/1803162820

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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 2026-06-25.*