When comparing SpiderOak vs Back In Time, the Slant community recommends Back In Time for most people. In the question“What are the best backup programs for Linux?” Back In Time is ranked 1st while SpiderOak is ranked 12th. The most important reason people chose Back In Time is:
Although highly customizable, Back in Time is also suited for people who want an easy tool to use that will back up their data. You can use BiT simply by configuring where to save snapshots, what folders to backup and when to do it.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Combines cloud syncing, storage service and backup client
Thus you have a single service for all of the things.

Pro Available for many platforms
The Spideroak client is available for Linux, MacOS, Windows, Android and iOS.
Pro Incrementals
SpiderOak updates only that part of the file that has changed, saving bandwidth and time.

Pro Zero knowledge
Data is locally encrypted before uploading to Spideroak. They cannot recover your data even if they wanted to since it is stored in encrypted state on their servers.
Pro Unintrusive
Pro Easy to use
Although highly customizable, Back in Time is also suited for people who want an easy tool to use that will back up their data. You can use BiT simply by configuring where to save snapshots, what folders to backup and when to do it.
Pro Efficient use of storage with file-level deduplication
Pro Highly configurable
Almost all functionality of the program can be customized. It's possible to set when snapshot get removed based on age, available disk space, quantity in a set time period, you can include and exclude files, folders and filetypes, you can defer backups when on battery power, you can ignore errors, you can preserve ACL, extended attributes and so on.
Cons
Con Interface could be more intuitive
The program uses non-labeled, non-intuitive icons and the purpose and functionality of the file browser is not clear at first glance.
