Allow for locally storing data without sync
No matter what you say about security of your servers, I'm not comfortable storing so much of my personal data (finances, names, locations) in an external location. On the other hand, I love design and functionality of your app. Please add an option of offline-only data storage and preferably export/import to/from local file for data migration between devices. If not for that, I'll be forced to seek other application.
I like the idea of storing my personal data local but If BudgetBaker had a server on it's own it would also work. Google wouldn't have our data and everything would work as it was before. ButgetBaker has our data but no one other. There would not be a problem with shared acounts and so on.
Moiz Mian commented
good app. but I can't sync my data on google drive or anything
Pascal Schulthess commented
Good point. A problem I see would be shared accounts, but one could solve this by using WifiSync.