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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.
As far as app compatibility is concerned on a custom ROM, you can check out Techlore's [Plexus](https://plexus.techlore.tech) project (I don't know if that list has been updated in a while or not so try an app and see if it works for you). I have heard positive experiences from other users that PayPal and CashApp work just fine on CalyxOS.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.