馃挵The subscription audit I run every January

Two hours once a year, works better than trying to be disciplined about it all year.

01
Pull the last 90 days of bank and card statements.
02
Check your phone's subscription page (Apple ID or Google Play).
03
Search your inbox for "receipt" and "invoice" going back a full year.
Not just this calendar year. A full trailing year catches the annual charges.
04
Write every recurring charge down in one place, even the $2.99 ones.
05
Cancel anything you can't say why you still have.
The honest test is having to think about it for more than a second.
06
Downgrade before you cancel if you're not sure.
07
Call to cancel anything that requires an actual phone call. Don't put it off.
These are always the ones still on the list from last January.
08
Check for annual charges hiding under a monthly-sounding name.
Adobe got me this way once.
09
Look for duplicate services doing the same job.
I had two cloud backups running for over a year. Two.
10
Ask yourself if you'd sign up for this today, at this price.
11
Set a calendar reminder for every free trial's real end date.
Not the day you signed up. The day it actually charges you.
12
Add up the total and compare it to last January's number.
13
note which ones went up in price without telling you
(not financial advice, just petty arithmetic)
14
one tracking app if you're past 10 subscriptions, I use Rocket Money
do the math on what the app itself costs before you add it to the pile

Or start a list of your own. Free, it takes a minute.