1. I have a hard time managing my bank account AND my main credit card. Mint seems to think me paying off my credit card bill is another expense, however Mint already tracked the CC charges so basically Mint thinks I run a massive loss every month (yes I've tried fixing this, multiple times)
2. Other than reviewing your newest transactions, and the occasional useful bill/fee reminder, I don't find much use for the app in regards to financial planning or analysis.
3. I don't like how Mint is basically used to slurp up my data, and sell me credit cards - it's obvious now how little they care about making it truly useful. The app has been in existence for years and barely nudges forward besides new UI.
The thought of manually tracking my expenses however is too much work. I find it hard enough launching the Mint app regularly to allow it to download my latest transactions.