The best alternatives to GallerAI are Tiat, Pixave for iPad, and ML Image Classifier. If these 3 options don't work for you, we've listed a few more alternatives below.
Tiat is a simple and powerful image organizer, build for designers, photographers and magpies. Tiat can handle millions of images with high performance and smooth user experence. You can organize the images in many ways, and easy to find them when you need.
Pixave is a robust image organizer, supporting a diverse range of formats with systematic management using Collections, as well as the extremely handy Smart Collections feature. The easy-to-use Drag and Drop has now been tailored to the iOS platform to work wonders.