Hygrometer

Just a humidity gauge. Works on Galaxy S4.

Not able to test it reliably but will try some rainy days and see what turns up. The Note3 is advrtised as having a humidity sensor.

(Edit: now have Samsung galaxy s5 and this app says it can't detect a humidity sensor. .. :/ grrr) Have samsung galaxy s4 active installed opened received humidity sensor not found... 3 stars 1 for simplicity another because it would be a great future 3rd because it didn't ask for a bunch of privileges :) but either you're incorrect on what phone has this humidity sensor or they took the humidity sensor out of the "s4 active"? I'll have a friend with a plain samsung galaxy S4 install and try this today

Do not install

Simple Hygrometer which can operate on Note 3 (sensor in bottom right hand edge corner). Integration with other sensors and perhaps logging functionality would make app more appealing.

What devices have humidity sensor?

Have samsung galaxy s4 active installed opened received humidity sensor not found... 3 stars 1 for simplicity another because it would be a great future 3rd because it didn't ask for a bunch of privileges :) but either you're incorrect on what phone has this humidity sensor or they took the humidity sensor out of the "s4 active"? I'll have a friend with a plain samsung galaxy S4 install and try this today

Maybe add a digital interface?

Just a humidity gauge. Works on Galaxy S4.