I'd like a time-tracking service like Toggl (Internet-based and works well on mobile and desktop). But I'm a lawyer so I don't want to store confidential client information on a service like that, so it would need to be client-side encrypted. I'd also like the software to tell me about opportunities to generate additional business (i.e. make more money).
Client-side encryption can now be done on most browsers using the WebCryptoAPI (although implementation is a challenge for developers). My ideal service would encrypt all of my data client-side with AES and then upload it to the time-tracking system. When I access the service it decrypts locally to show me my information.