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KeePassDX
Lightweight vault and password manager for Android, KeePassDX allows editing encrypted data in a single file in KeePass format and fill in the forms in a secure way.
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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.
Left keePass Xc and went to [Bitwarden](https://bitwarden.com) works flawless on Linux Mint and Android.
I have made the KeePassDX app the easiest to use though, and I don't see what extra steps you are talking about as I do have only 3 steps to access my database. Don't forget to click on the star of a database to bookmark it and select it automatically and to configure the fingerprint correctly for automatic opening. https://github.com/Kunzisoft/KeePassDX/wiki/Advanced-Unlocking If you want to keep a database in a single file and not in a centralized server, the KeePass solutions are the most appropriate.