We're building an intelligent financial assistant (meetcleo.com) at a startup incubator here in London (joinef.com). We were thinking of building out a feature where you could run your own Python / R code in the browser to analyse your transaction data.
The process would look like the following;
1. Connect your account(s) - we use Saltedge.com to pull the data.
2. You'd get a browser IPython / RStudio Server instance with your data loaded into a dataframe (we pull new data once a day)
3. You can run your analysis / schedule jobs / save scripts, etc.
Let me know if you're interested and we'll build it! We build really fast!