While you need a subscription to sync with the desktop and unlock certain premium presets and masking tools, the core editing engine is available for free on your phone or tablet. For many hobbyists, this is more than enough to get started.

The mobile version of Lightroom offers many core editing features for free on iOS and Android devices, though some advanced tools require a subscription. Making a Sustainable Choice

An open-source photography workflow application and raw developer that is completely free to use. It is a great option for users on Linux or those looking for an app-agnostic workflow.

Adobe offers a 7-day free trial for the Creative Cloud Photography plan, which includes Lightroom and Photoshop. You can start this by visiting the Adobe official site.