Samepage allows direct file editing such that a file uploaded to Samepage, for example a Word document, may be edited in it's native program which eliminates the hassle of the cycle of uploading and downloading to collaborate or co-author with others. It's seamless with Samepage's desktop app, except that Samepage is glitchy and often documents/data won't save. There is no way to recover these document edits. We use Microsoft Office programs such as Word and Excel. More importantly, we use track changes in Word documents to collaborate on projects--this is not a seamless feat with remote workers. It involves constant downloading and uploading and managing of various versions. We tried programs like GSuite, OneDrive, and countless other writing collaboration tools/software to no avail. Either they weren't robust enough or they required our whole team to be on a particularly clunky platform with special email addresses. Samepage is great because you only have to upload a document once and never have to download it to edit it. Moreover, all the Word document functions work properly including track changes.
The user interface is awkward, the layout is cramped, and the navigation is never fluid no matter where you are on the learning curve. It's not stable so expect page freezes and lost data. I don't bother adding many elements or pages anymore unless I'm feeling like I want the self-inflicted pain of going through a maze with unstable elements everywhere.