Photomark is described as 'Free online tool that lets you add camera-style watermarks to your photos. Inspired by the Leica watermark from Xiaomi phones, it automatically detects EXIF data like camera model, shutter speed, ISO, and date, and overlays it on your image in a stylish layout' and is an app. There are five alternatives to Photomark for a variety of platforms, including Android, Windows, F-Droid, SaaS and Flatpak apps. The best Photomark alternative is Easy Watermark, which is both free and Open Source. Other great apps like Photomark are Watermarking, Watermark, Aoao Watermark for Photo and Watermarkup.