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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.
I don't develop for mobile platforms, so this is just a stab in the dark... There is a similar issue reported here: https://github.com/kivy/plyer/issues/512 which mentions some stuff about permissions, it may be worth looking into/double checking. It's also possible that some change in recent Android versions require a rewrite of the code, the mobile OS'es are moving rapidly..
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