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Anki-Android
AnkiDroid: Anki flashcards on Android. Your secret trick to achieve superhuman information retention.
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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.
maybe interesting: my add-on export_collection_without_media_or_cardcontents
I think I remove most non-metadata but better check with the help from https://github.com/ankidroid/Anki-Android/wiki/Database-Structure
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