Sensitive Altimeter. This Android application measures air pressure using internal barometric sensor in the portable device and displays it on a three-pointer altitude indicator similar to the altimeter gauge in aircraft. Digital indication is also available.
It can take a long time. Some employers move very quickly, and others move very slowly. People have been hired three hours or three months (or more) after interviewing. Moreover, hiring nearly always takes longer than employers expect it will; you should generally double or triple whatever timeline they give you.
If the hiring manager gave you a timeline for the process, follow up once more after they should have passed into the next stage of interviews (but don't be annoying!). If you don't have an exact timeline, aim for a second follow up 10 to 14 days after the interview, if you still haven't heard back.