Signal Collector

Measure the signal. Keep the result.

Signal Collector brings Wi-Fi, mobile networks, Bluetooth, location and phone sensors into one recording. Check coverage in a building, follow signal changes along a route or document a site visit.

Build your own measurement
Choose the capabilities you need and configure their sampling intervals. Recording continues in the background with the screen locked. Keep track of elapsed time, distance and the number of saved records.

Find the part that matters
Browse signal history in a graph. Place two markers to select a range, then save a clip as a new measurement or share it. The original recording stays intact. Finished measurements remain in history for later review.

Add context in the field
Mark survey points and attach photos or voice notes. Export your results as CSV, KML or TXT, with gzip compression where available, for further analysis or sharing.

Share on local Wi-Fi
Enable a live browser view of the latest measurement, downloads and webhooks. The viewing QR link is separate from the owner link. Sharing uses local HTTP and stops when Wi-Fi disconnects. The new controls are in English and Czech; the browser view is in Czech.

Your data, your choice
Recordings stay on your phone until you share them or configure delivery. Optional internet tests generate network traffic. Available signals and data fields depend on the phone, Android version and granted permissions.

Start free
One hour of measurement is free each year. Only time spent measuring counts. Unlock unlimited measurement with a one-time purchase at the price shown in Google Play. No subscription.