I would like to present one my app - μBarometer.

The goal of μBarometer is to be useful, small and elegant.
Features:

• Pressure units: mBar, mmHg, inHg, atm
• Altitude units: meters, feet
• Pressure Graph
• Altitude Indicator
• App widget with three themes
• Pressure value in the status bar

The pressure graph shows the change in pressure in 48 hours.
To collect data μBarometer runs a small service which saves the pressure value every hour.

The altitude value are based on the current pressure value.
For quick switching between pressure/altitude indicators just tap on the indicator icon.
You can measure the relative altitude.
Just tap on the altitude indicator and it will show the relative altitude from the current point.

WARNING: this app uses the built-in air pressure sensor.
WARNING: Read this FAQ: https://xvadim.github.io/xbasoft/mubarometer/faq.html

μBarometer forum: https://www.reddit.com/r/muBarometer/

Here are screenshots:


There are two version of the app in the Google Play: free and paid(pro). The free version shows a small banner with ads, the pro-version doesn't show ads and contains an additional widget with a mini graph.
The free version is attached.

 

Hi there,
I've released a new version with new features:

• circle widget
• markers for the historical min/max values on the scale.

 

I am going to add OUTdoor temperature measurement in future. It's needed for calculation mean sea level pressure. As for INdoor It's require a built-in thermometer, but I still have not seen smartphones with it. But I'll think about it.