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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 use both extensively and I agree, Telegram has the best UX of any messaging app. The desktop app is QT I think so it feels very snappy compared to Signal's electron app.
Signal's iOS app is a native Swift/UIKit app and open source however, so I'd encourage you to report any bugs or issues you find: https://github.com/signalapp/Signal-iOS
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