[jimbo366]

Does it support differential sync? It's the only reason why I'm still using Dropbox.

[shreyshrey]

For majority of the users delta sync doesn’t bring much benefits . See here https://www.getfilecloud.com/blog/2017/03/myths-and-facts-ab...

Most of the modern files like office documents and pdfs are compressed. Delta Sync only will help in scenarios if you have bitmaps and vm disks.

[jasonsync]

The Sync apps provide end-to-end encryption, so the entire file is uploaded when it changes. Agreed differential sync can be a good thing, especially with super large files that change often.