OpenProbe

OpenProbe is an academic research project developed at UCL to study mobile network quality through crowdsourced measurements.

When you choose to contribute, OpenProbe takes a quick measurement of your network connection and sends it anonymously to a research mailbox. Your participation helps build a picture of how network performance varies across locations, times, and connection types.

WHAT OPENPROBE MEASURES
- Latency (TCP handshake time) to several public servers, including any custom targets you add
- Download bandwidth
- Network type (WiFi / Mobile)
- Approximate location, rounded to a ~100m grid on your device

PRIVACY FIRST
- A random anonymous identifier is generated on your device. It is never linked to your name, email, or phone number.
- Precise location is rounded on-device before anything is sent. Exact coordinates never leave your phone.
- All data is transmitted over an encrypted connection (TLS).
- Uploading is entirely optional. You can opt in or out at any time in Settings.
- You can view your full measurement history on the device and delete any record.

YOU ARE IN CONTROL
- Choose which servers to measure, including your own custom targets.
- Review every measurement before and after it is uploaded.
- Withdraw consent at any time, and request deletion of your contributed data using your anonymous ID.

OpenProbe is free, contains no advertisements, and does not require an account.

For full details on what is collected and how it is used, see our privacy policy: https://yyx1205.github.io/openprobe-privacy/

Contact: openprobeUCL@gmail.com