Isn't this just Google Earth but with less features?

It's possible to adjust it so you have three little buttons but you can also use gestures from those buttons. Not the sides. I used to use that setup for a long time but know I'm just using the regular gestures for now. By the way I'm on a Samsung Galaxy S20.

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I can't recommend Daylio enough! It's an app that's constantly getting new features. It's very customizable! You can make goals and custom moods which both help me a lot. You can also set reminders to do goals or just to make a daily entry. And all your data is stored locally unless you want to backup up to drive. Which is pretty secure. I think I also read that the backup is encrypted but I could be wrong. You can also manually backup and encrypt it then.