SignalScope: Privacy Policy
Effective 17 October 2026. Applies to the SignalScope app for Android (com.avroit.signalscope), version 1.0 and later.
Summary
- Everything SignalScope measures is processed on your phone. Nothing leaves the device: the app has no account, no ads, no analytics, no tracking and no crash reporting, and it never sends data to AVRO IT or anyone else.
- The app asks for location, nearby devices, Bluetooth and camera access only because Android requires them for Wi-Fi scanning, Bluetooth scanning and augmented reality. It does not determine or record where you are.
- The only network traffic the app creates stays in your local network, and only when you start a device scan or a port check yourself.
Who is responsible
SignalScope is published by AVRO IT, ul. Przelotowa 188A, 42-523 Dąbrowa Górnicza, Poland, tax ID (NIP) 6292383961, REGON 363379805 ("AVRO IT"). Contact: avroitmm@gmail.com. AVRO IT does not receive any data from the app; it only processes the e-mails you send it.
Permissions and why they are needed
| Permission | What it is used for |
|---|---|
| Location (precise) | Android only shows Wi-Fi scan results and the name of the connected network to apps with this permission, and only while Location is turned on. SignalScope uses it for nothing else and never reads your GPS position. It is used only while the app is open; there is no background location. |
| Nearby Wi-Fi devices (Android 13+) | Reading Wi-Fi networks around you. Declared as not used to derive location. |
| Nearby devices / Bluetooth scan (Android 12+) | Listing Bluetooth Low Energy devices that advertise nearby, only while you run a Bluetooth scan. Declared as not used to derive location; the app never connects to these devices. |
| Camera | Only for the augmented-reality signal map, to track your walk through a room. No photos or video are taken or stored. |
| Network access, Wi-Fi state, multicast | Checking your connection and, when you start it, discovering devices in your own local network (ping and short connection attempts to common ports, mDNS, UPnP/SSDP) and checking which common ports a device has open. |
You can refuse or revoke any permission in Android settings; only the feature that needs it stops working.
Data stored on your device
SignalScope keeps the following in the app's private storage on your phone:
- Signal maps: the projects you create: name, the floor plan image you choose, scale calibration, and the measurement points with the network name, BSSID, frequency and signal strength at each point.
- Known devices in your network: for each device found by a scan of your local network, its IP address, the name it announces, its manufacturer and device type, the name you give it, and when it was first and last seen, so the app can mark devices that are new since the last scan.
- Settings: theme, language and the other options you set.
Data that is only kept in memory while the app runs and is never saved: the Wi-Fi networks around you (names, addresses, signal strength), the open ports found on devices, Bluetooth devices found nearby, and any password you type into the password checker. The password checker works entirely offline; the password is never stored or sent.
SignalScope turns off Android cloud backup and device-to-device transfer, so this data does not reach your Google account. You can delete it at any time in Settings → Data → Clear history (signal maps with their floor plan images, and known devices), by deleting a single map, or by uninstalling the app.
Exports
When you choose to export the Bluetooth device list, the app writes a CSV file to a place you pick with the Android file picker. The file contains the device names, addresses, signal strengths and manufacturer data listed on screen. What happens with the file afterwards is up to you.
Local network scans
A device scan or a port check only targets private addresses in the Wi-Fi network your phone is connected to, is limited in frequency, and starts only after you confirm it. Please scan only networks you own or are allowed to test.
Augmented reality (Google Play Services for AR)
The augmented-reality map uses Google Play Services for AR (ARCore), which is provided by Google LLC and governed by the Google Privacy Policy. ARCore processes camera images on the device to track motion. If ARCore is not installed, the app offers to install it from Google Play.
Sharing with third parties
SignalScope does not share any data with third parties and does not sell data. Apart from ARCore described above, the app contains no third-party services that receive data.
Children
SignalScope is a network tool for a general audience and is not directed at children.
Your rights
Because AVRO IT receives no data from the app, it holds no data about you that it could provide, correct or delete; all app data stays under your control on the device. If you write to us, we use your e-mail only to answer it and keep the correspondence as long as needed to handle your matter. Under the GDPR you may contact us at the address above or lodge a complaint with the President of the Personal Data Protection Office (UODO), ul. Stawki 2, 00-193 Warsaw, Poland.
Changes to this policy
If the app's handling of data changes, we will update this page and its effective date before the new version is published.