Blog

Notes from building Vartio

How we build EU-hosted monitoring and application intelligence, written up as we ship it.

August 2026
What we learned building OpenTelemetry SDKs for iOS and React Native
We just open-sourced two mobile instrumentation libraries: vartio-swift (SPM) and vartio-react-native (npm @vartio/react-native). Apache-2.0, plain OTLP/HTTP, no proprietary wire format.