Lightroom Mobile is a great photo editor for iPhone and iPad. But if you want to add custom presets to the app, you need to use the Lightroom desktop app. If you’re not familiar with Lightroom, it’s a great photo editor that lets you create, manage, and share photos. You can also use it to edit photos on the go. To add custom presets to Lightroom Mobile, first open the Lightroom desktop app and click on the Presets tab. Then click on the Add button next to a preset name. You’ll be able to choose a file type, such as JPEG or PNG, and enter a description of the preset. Once you’ve added your new preset, press OK to save it. You can now use your new preset in Lightroom Mobile without having to remember its name!