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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
It's sort of a little-known secret, but you can run Python programs on Android phones. I'm going to link you to one of the ways but it's another page full of seemingly disjointed terms- https://github.com/kivy/python-for-android. The takeaway is that if you get your Python program running on your computer it will be possible to get it running on your Android phone.
NOTE:
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Hence, a higher number means a more popular project.