Been using Clinometer + bubble level for a couple months now. It’s basically an app that lets you measure angles and slopes using your phone’s sensors. Pretty solid if you’re into that kind of thing.
Here’s what you do: you can use it as a regular level to check if surfaces are straight. And there’s also a clinometer mode that shows the angle of tilt. And the bubble level is super handy – just place your phone and it’ll tell you if it’s perfectly level.
Look, if you need to measure stuff around the house or on job sites, you’ll probably like this app. It’s not perfect – the UI is a bit dated and the free version has ads – but overall it does the job. Worth checking out.