What Android apps are worth paying for?

What non-game paid apps do you use that are worthwhile and still relevant in 2023?

For context, I have a decent amount of Google Play credit thanks to Opinion Rewards and a gift card. I'm not looking to start a book or movie collection there, nor sign up for subscription services. But I'm happy to buy the paid/pro version of useful apps.

I'm excluding games just because that's a whole topic on its own.

Here are some one-time paid apps I've been happy with:

• Tasker
• Titanium Backup
• SD Maid
• BigBag
• Wolfram Alpha

EDIT: Shoutout to ijeff@lemdro.id who helped get an even better thread going over at !android@lemdro.id. Check there for even more great app suggestions!