Ultimate Network Troubleshooter

Ultimate Network Troubleshooter is an Android app that analyses Wi-Fi and mobile networks and offers network tools. It is made by Kalmarium Services BV, the Netherlands ("we"). There is no account, no sign-up and no analytics. We run no server that receives your data.

What stays on your phone

Everything the app measures or discovers stays on your device: Wi-Fi networks, signal strength, the devices found on your network, port scan results, the network map, reports, Bluetooth scan results, and your settings. Reports and maps leave the phone only when you choose Share or Save, and then go where you send them.

Location and nearby devices

Android requires precise location access before an app may list nearby Wi-Fi networks, mobile antennas and Bluetooth devices. The app uses it on your phone to show those and to place you on the antenna map. Bluetooth scanning needs the Nearby devices permission. Neither is used for tracking and neither is uploaded by us.

App activity (optional)

The App activity tool shows which apps use the network and how much. It reads Android usage statistics after you grant Usage access, and it can run a local VPN service on your phone to see which website names apps look up and to count traffic to devices on your home network. This VPN stays on the phone: internet traffic does not pass through it, nothing is sent to us or any other server, and results are kept in memory until you close the report. You can stop it at any time and revoke Usage access in Android settings.

Services the app contacts, only when you use the related feature

Antenna map: to place mobile antennas the app sends the cell identity (and nearby Wi-Fi identifiers) to OpenCelliD and BeaconDB, and the visible map area to OpenStreetMap Overpass servers. These services see your internet address and an approximate area.

Speed test: uses Cloudflare's public speed test servers (speed.cloudflare.com). iPerf3: connects to the server you pick.

IP and provider, Whois, Exposure check: your public IP address or the domain you enter is sent to RIPEstat, the internet registries (via IANA) and Shodan InternetDB to look up its owner and open ports.

Cloud and services: connects to about 44 public websites and reads the public status pages of Cloudflare, Microsoft, Google, Amazon, GitHub, Slack, Atlassian and OpenAI.

Network tools (ping, route map, DNS, website check, port scan, device scan) send packets to the hosts or devices you choose, as the tool name says. Only scan networks you own or have permission to test.

The free version shows a banner ad from Google AdMob. To show and measure ads, Google and its partners may collect and process your advertising ID, IP address (which gives an approximate location), device information and ad interactions. In the European Economic Area, the United Kingdom and Switzerland the app asks for your consent before any ad is requested, and you can change your choice at any time in the app settings under Privacy choices. More about how Google uses data: policies.google.com/technologies/partner-sites.

The one-time ad-free purchase removes all ads, and with them all ad-related data collection in the app.

Purchases

The ad-free purchase is handled by Google Play Billing. We receive no payment details. Google Play tells the app only whether your Google account owns the purchase.

Children

The app is not directed at children under 13.

Your rights

Under the GDPR you have the right to access, correct or delete personal data and to object to processing. Because we hold no personal data about you ourselves, requests about advertising data are handled by Google; you can also reset or delete your advertising ID in your Android settings.

Contact

Kalmarium Services BV - kalmariumservices@gmail.com