iPhone Apps to Merge photos

Fotor is a comprehensive online photo editor and design tool, offering a wide array of features for both professional image manipulation and creative graphic design. It combines robust editing capabilities with user-friendly design templates.

PicsArt stands out as a comprehensive mobile and web-based creative platform, offering robust image editing, collage creation, drawing tools, and a vibrant social community for sharing and discovering artistic content. It caters to both beginners and more experienced users looking to enhance their photos and express their creativity.

Autodesk Pixlr is a robust, free online photo editor offering a wide array of tools for image fixing, adjustment, and filtering directly within your web browser. It's ideal for both quick edits and more complex manipulations without requiring software installation.