If you are looking for organizationwithin your calendar? This is the best application to have. Easy to navigate and understand. You can post your entries for your expenses and your income and you can choose a tag on each entry. If the default entry doesn't contain the tag you want, you can simply add a tag to go with your entry. There's an option to see the cumulative expenses abd income and you can get to see which part of your expenses take the most of your income which is cool. You can also change the background setting as in any other app, but you can customize the background based on your taste. Lastly, this app shows you a weekly weather report such as if it's sunny or rainy and it's up to date. I simply like the design and how it's made for people who like to be organized in everything including finances. I highly recommend this app.

I can create 4 types of documents:"calendar events", linked to my current calendar "notes", linked to my current calendar "tasks" with functionality to create complex projects with multiple tasks and sub-tasks in one entry.

I can also change the background setting as in any other app, but i can customize the background based on my taste. 

Automatic data backup on a Cloud for 'tasks' and 'financial statements'. Free version stores those 2 data types locally only, so if i delete my app, only calendar events and notes can be restored, all other data will be lost.