What’s the main difference between Simple and YNAB? I’m a YNAB user but have never used Simple. You say that you can’t see the extra value of mvelopes (and I assume YNAB) but if you don’t have Simple then why is YNAB not good enough?
If you used Simple pretty much exclusively you wouldn't have to manually enter any transactions, although you might occasionally have to categorize things.
The obvious exception would be cash transactions, which I don't believe Simple ever tracked in any detail.
EDIT: and I think it migrated to OAuth anyways so no more tokens