Spender.me is fantastic finance manager. But unfortunately the export data feature is not available for the moment. Do you want to have a backup of your data in emergency case? spender.py allows you to export all your data in json format. Store and keep it safe.
Get data for October of 2017
./spender.py email password 09-2017
Get data from February to October of 2017
./spender.py email password 02-2017 09-2017
After script execution data.json file will be created in the working directory.