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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 free and open source. https://github.com/nightlynexus/bataway Only on Android so far. I made it for myself, but I liked it enough to polish it up and publish the code.
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