I've been using the free version of Expense Manager to keep track of my expenses last 2017 and luckily I was able to make complete entries for the whole year. This year I plan to set a monthly budget and try to stick to it and I will be using last year's data.
Expense Manager uses sqlite as storage and it has an option to backup the data either as raw sqlite data or csv. Instead of using the raw sqlite data backup, I created a new database (using sqlite3) and created the expenses schema is below.
CREATE TABLE expenses(
...
