Trichromy1.6.2 - App Store

Discover and capture the ethereal beauty of trichromatic photography with this one of a kind camera app.

Trichromy is the process of creating color images by combining 3 monochromatic images: typically red, blue, green. Because the exposures are taken at separate times, they layer in ways that range from subtle shimmers to utterly psychedelic.

This app features a beautiful, straightforward interface that lets you experiment with trichromatic photography on your phone, no fancy equipment or complicated workflow required!

Use the main shutter to capture three successive exposures with a delay, which you can change with the slider. Or use the individual colored shutters to capture channels in any order and timing you want.

This method of producing color images goes back to the 19th century and was one of the earliest. Notably, Sergey Prokudin-Gorsky used the trichromic process to document large swaths of early 20th century Russia. Lear more about the history of this little known photographic process on our website, trichromy.net !

Version History Trichromy 1.6.2 removes the optional tipping, and restores the previous one-time unlock.
(if you have tipped any amount you will benefit from the unlock) 1.6.2 Sep 3 Trichromy 1.6.1 fixes French localization bugs.

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Trichromy 1.6 introduces a number of improvements:

BETTER CAMERA PICKER:
Including support for Fusion Camera such as the 2× on all iPhone 15/16/17 series, and 8× on iPhone 17 Pro.

NEW CAPTURE FORMATS
You can stick with JPEG, or now choose HEIC (smaller file size) or TIFF (lossless quality, very large file size: ideal if you're going to print your images or use them for art projects)

A NEW, OPTIONAL LIQUID GLASS THEME
if you're on iOS 26 and you want bouncy, shiny controls, you're in luck! 
The app icon also now behaves better with clear/tinted modes.

SUPPORT FOR LANDSCAPE SHOOTING
The interface will now reorient when holding your phone in landscape, and the correct EXIF metadata will be written.

ENTIRELY FREE APP
The watermark options were previously locked behind an in-app purchase; that is no longer the case. The app is now entirely free, and includes a voluntary tipping system.

AND ALSO
a number of smaller quality of life improvements such as support for saving the GPS location of the image in its metadata, a French localization, the ability to keep the viewfinder corners square, bugfixes. 1.6.1 11/08/2025 Trichromy 1.6 introduces a number of improvements:

BETTER CAMERA PICKER:
Including support for Fusion Camera such as the 2× on all iPhone 15/16/17 series, and 8× on iPhone 17 Pro.

NEW CAPTURE FORMATS
You can stick with JPEG, or now choose HEIC (smaller file size) or TIFF (lossless quality, very large file size: ideal if you're going to print your images or use them for art projects)

A NEW, OPTIONAL LIQUID GLASS THEME
if you're on iOS 26 and you want bouncy, shiny controls, you're in luck! 
The app icon also now behaves better with clear/tinted modes.

SUPPORT FOR LANDSCAPE SHOOTING
The interface will now reorient when holding your phone in landscape, and the correct EXIF metadata will be written.

ENTIRELY FREE APP
The watermark options were previously locked behind an in-app purchase; that is no longer the case. The app is now entirely free, and includes a voluntary tipping system.

AND ALSO
a number of smaller quality of life improvements such as support for saving the GPS location of the image in its metadata, a French localization, the ability to keep the viewfinder corners square, bugfixes. 1.6 11/06/2025 This version updates an API deprecation in iOS 18 that does not affect users, but makes the app more future proof.

It also fixes a bug where the date/time stamps on the picture would update in real time - they now stay locked to when the picture was actually taken (like if you take trichromy pictures at 23:59 and set the timestamp at 00:00).

If you're reading this and enjoy the app, please leave us a review! It helps a lot :) 1.52 02/13/2025 This minor update enables capturing with the volume button on devices running iOS 17.2 and later. 1.51 04/11/2024 Trichromy 1.5 adds a new OPTIONS screen, that lets you customize your final image, such as by including a Trichromy watermark or the capture date/time.

This requires a one time in-app purchase. All other existing functionality remains free! 1.50 04/03/2024 This update brings tap to focus to Trichromy, as well as minor improvements. 1.40 03/20/2024 Trichromy 1.31 features a redesigned, improved slider to set the interval between the captured frames. 1.31 01/12/2024 A new Settings screen lets you customize Trichromy to your liking, for example by disabling haptics or capturing pictures in the square format.

Proper UI display for the new 5x zoom on iPhone 15 Pro Max has been added. 1.3 12/25/2023 This version adds animation for the individual channel shutters, as well as compatibility with iPod Touch devices. 1.2 05/25/2023 Added a zoom picker for iPhones with Dual or Triple camera systems. 1.1 05/11/2023 1.0 05/11/2023