Moon Reader iOS does have some syncing capabilities, but it’s not as seamless as I’d hoped. I’ve been using it alongside my Android tablet, and while it supports syncing reading progress via Dropbox or Google Drive, the setup feels a bit clunky compared to dedicated ecosystem tools like Kindle. You have to manually upload and download files, which can be annoying if you switch devices frequently. The app also lacks real-time syncing—it’s more of a manual 'push and pull' situation. That said, if you’re patient and don’t mind a little extra effort, it works well enough for keeping your place in a book. I wish it integrated with more cloud services or had a built-in solution like Readwise, though.
One thing I appreciate is the flexibility with file formats. Since Moon Reader handles EPUB, PDF, and even MOBI, it’s great for sideloaded books. But the syncing feature feels like an afterthought rather than a core function. If you’re deep into the Apple ecosystem, you might find it frustrating that there’s no iCloud support. For casual readers, it’s manageable, but power users might crave something smoother. I ended up using a combo of Moon Reader for offline reading and Kindle for sync-heavy stuff—best of both worlds, I guess.