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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.
If you really want to see all the gps-like services out there and have android, you must play with the open-source GPStest
https://github.com/barbeau/gpstest
I've been fascinated for years how badly GPS does altitude (mean-sea-level)
in the USA they had to build an augmentation system for airplanes for altitude (WAAS)
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