# Calibration Plus — Digital Negative Calibration

> Digital negative calibration tool for alternate process printing with fine tone control. (iPhone/iPad app by Le bord de la piscine.)

- Source: https://appshunter.io/ios/app/calibration-plus/id1414916538 (this page in markdown: same URL + `.md`)
- Developer: [Le bord de la piscine](https://appshunter.io/developer/456593417)
- Category: Photo & Video, Utilities
- Price: $2.99
- Rating: 3.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 14 MB
- Languages: American English, French (France)
- Released: 2018-09-06
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/calibration-plus/id1414916538/reviews.md

## What is Calibration Plus?

Calibration+ helps you for alternate process printing, by allowing fine tone control on your digital negatives.

For instance, the cyanotype process is contrasted with poor half tones. Calibration+ helps you to have better prints with dark, white and halftones by designing a correction curve.

With Calibration+, generate a reference chart on your device. Use your favorite image processing software :Adobe Photoshop™, Gimp, Affinity Photo™, Lightroom™… to generate digital negative. Invert. Flip. Print (as usual).

Photograph the print! Calibration+ computes  the adjustment curve in your photo software to have perfect prints.

## Key features

- Fine tone control for digital negatives
- Correction curve design
- Reference chart generation
- Alternate process printing aid
- Improved print quality

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/calibration-plus/id1414916538/reviews.md

### 1/5 — useless

*2022-05-10*

Absolutely useless, badly explained, don’t buy it

**Developer response:** Hello. We are sorry that the app does not meets your needs. Can you contact us with the email address on the app store or the facebook page, so we can improve the app.

### 5/5 — Amazing app!

*2019-04-02*

This app solves the problem of determining the best curves for printing with alternative processes. You can produce a good curve in just  a couple of steps. Highly recommended.

## Frequently asked questions about Calibration Plus

### What is Calibration Plus used for?

Calibration Plus is designed to help users create digital negatives for alternate process printing. It allows for fine tone control, enabling users to design correction curves for better print quality, especially for processes like cyanotype that can struggle with half tones.

### How does Calibration Plus improve prints?

By allowing users to design custom correction curves, Calibration Plus helps to achieve better dark, white, and halftone tones in digital negatives. This leads to more accurate and aesthetically pleasing prints when using alternate photographic processes.

### What image processing software is compatible with Calibration Plus?

Calibration Plus can be used in conjunction with popular image processing software such as Adobe Photoshop™, Gimp, Affinity Photo™, and Lightroom™ to generate and refine digital negatives.

### Does Calibration Plus have ads?

No, Calibration Plus does not contain advertisements, providing an uninterrupted user experience.

### What devices support Calibration Plus?

Calibration Plus is available on iPhone, iPad, and iPod devices, offering flexibility for users across Apple's mobile ecosystem.

### What is the price of Calibration Plus?

Calibration Plus is a paid application, available for a one-time purchase of $2.99.

### How often is Calibration Plus updated?

The latest version of Calibration Plus is 1.15, and it was last updated on May 28, 2025. This indicates a commitment to ongoing development and improvements.

### What is the age rating for Calibration Plus?

Calibration Plus has an age rating of 4+, making it suitable for a wide range of users interested in photo and video applications.

## Version history (last 5 releases)

### 1.15 — 2025-05-28

We regularly update and enhance the application.
New in this version :
* optimized application for iOS 18

### 1.14 — 2022-04-30

We regularly update and enhance the application.
* optimized application for iOS 15
* The reference chart is now correctly displayed on the latest iOS version

### 1.13 — 2020-05-31

*iOS13 optimisation
* boundary for aligned scanned image more visible

### 1.2 — 2018-09-11

user interface enhancement for large screens
and code optimisation

### 1.1 — 2018-09-08

Optimized code and fixed a few typos. 
Added french localization.

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## More apps by Le bord de la piscine

- [WiFiMIDI](https://appshunter.io/ios/app/wifimidi/id456593414)
- [Pinhole Assist](https://appshunter.io/ios/app/pinhole-assist/id466757473)
- [Reciprocity Plus](https://appshunter.io/ios/app/reciprocity-plus/id898649178)

All apps by Le bord de la piscine: https://appshunter.io/developer/456593417

## Related topics

[cyanotype](https://appshunter.io/ios/topics/cyanotype)

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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 2026-08-29.*