Know any app that replicates device file-folder structure on to cloud?

I need an app that just replicates entire device file-folder structure on to my preferred cloud storage (e.g, Dropbox). This is akin to dropbox sync. The need is that I should be able to browse the files structure both on device and that replicated on cloud. Existing backup apps need users select data to backup (Big hassle) or schedule it (another big hassle), and the finally backups they create are not easily browsable - they flatten directory structure, and it's hard to make sense out of it

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