They're using the battery temperature run through an algorithm they've devised which they've found to, when averaged with other local users, estimate the actual temperature. My phone's been charging since I installed the app and that skyrockets the battery's temperature, so I have yet to see it give a remotely accurate reading of the ambient temperature.
At the moment, only the newer, high-end Android devices have barometers in them. A regularly available data or wifi connection is also necessary for the data to be real-time. So, this should work just fine right now in the major cities of India and the more developed countries of Africa, but for the most part it's probably a bust. Their lack of one infrastructure mirrors another.
An isobar display instead of individual info points has been a goal in pressureNET for a long time. Giving the user enticing visual feedback is part of making the app more broadly appealing.
Yes, it IS ridiculous that women are so poorly portrayed, poorly treated, misrepresented and under-represented in TV, magazines, film, video games. All media. All of society.
The same can be said of people of colour, of LGBTTIQQ2SA people, of all minorities.
Please, do not diminish a problem because it is common (or in this case ubiquitous). That only makes it that much more of a problem.
Women are portrayed the way they are because it makes straight white men happy, but it destroys the agency of women as equal beings.