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ios-application
A native, lightweight and secure one-time-password (OTP) client built for iOS; Raivo OTP!
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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 also came across Tofu Authenticator (https://github.com/calleluks/Tofu). It lacks some features such as the ability to put a password at startup (Raivo encrypts your data with AES-256 using your encryption key which is the password you've set, Tofu is using native iOS keychain) and it does not feature an export option.
I'm currently using Raivo OTP (https://github.com/raivo-otp/ios-application), it's open source and it does encrypt the data on your phone and you can export them to an encrypted zip file at any time.