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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.
from what I'm reading (https://github.com/flipperdevices/flipper-application-catalog/blob/main/documentation/Contributing.md) the answer is yes and no. Yes anyone can create an app, but the app has to conform to some standards, tech requirements, validation and be approved to be in the catalog.
NOTE:
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