Protect the self. Perceive the world.

Nearby radio awareness

Your Android phone observes nearby Bluetooth LE advertisements and visible Wi-Fi networks and shows what is here right now: how many radios, and which device families. You get a readable picture of an electronically dense space instead of a wall of MAC addresses.

Encounter memory

Sotreus learns what is normal for each place and keeps a local memory of what you have encountered. Every observation is marked Familiar, New, Persistent or Re-encountered, with an explainable attention score, so you can see what changed and what you have seen before somewhere else.

Sky context: aircraft, drones and satellites

When you switch it on, Sotreus places nearby aircraft, drone Remote ID broadcasts and satellite passes on the same timeline as your local observations. Each one is labelled SENSED, NETWORK or PREDICTED and shows its data age, so you always know where it came from.

Sotreus Edge

Sotreus Edge is a pocket hardware companion (ESP32-S3, Bluetooth 5 LE, 2.4 GHz Wi-Fi, optional GNSS) that keeps scanning on its own battery while your phone sleeps, then syncs the full session to the app. The result is continuous coverage of a journey, not just the moments the app was open.

Mesh Mode for off-grid comms

The same Edge unit carries a LoRa radio and switches to Meshtastic in Mesh Mode, so it doubles as an off-grid messaging node. Edge Mode observes; Mesh Mode communicates; the two never run at once.

Memory, not just a live list

Developer scanners such as nRF Connect show the Bluetooth advertisements around you right now. Tracker detectors such as AirGuard focus on known tracker models. Sotreus keeps a local memory of every distinctive BLE and Wi-Fi fingerprint it observes, so it can tell you what is new here and what has re-appeared in a different, unrelated place.

Ground and sky on one timeline

Flight trackers such as Flightradar24 show aircraft, and satellite or drone apps each show their own slice. Sotreus puts aircraft (from OpenSky Network), drone Remote ID broadcasts and satellite passes (from CelesTrak orbital elements) on the same timeline as your local radio observations, and never blurs which source each one came from.

Local-first, with no account

Wardriving apps such as WiGLE WiFi are built around contributing observations to a shared public map. Sotreus has no account and no mandatory cloud: radio history, places and journeys stay on your phone, with optional encryption at rest, and satellite passes are computed without sending your location anywhere.

Evidence, not alarms

“Spy camera detector” apps tend to announce threats they cannot verify. Sotreus says what it observed, where the data came from and how old it is, and never claims intent: “Remote ID broadcast observed”, not “drone operator found”. You decide what the evidence means.

Receive-only and open source

Sotreus only listens to what nearby electronics already broadcast. It never connects to, interrogates, deauthenticates, jams or injects into them. The Android app’s source is public on GitHub under GPL-3.0, so anyone can check that claim.

A dedicated sensor when the phone can’t

Phone-only apps are limited by Android’s scan throttling and battery policy. Sotreus Edge keeps its own scan schedule, location and battery, so observation continues when the phone is asleep, in a bag or out of power.

Founder: Shachindra Kumar

Sotreus is the brainchild of Shachindra Kumar, who started it at NetSepio in 2026 to turn NetSepio’s privacy and security work toward personal, physical security.

Why Sotreus exists

2026 has been a wild year. In the UAE, during a year of rising regional conflict, staying safe meant checking flight trackers, drone reports and missile alerts in a constant state of panic, stitched together from apps that were never built to be read together. At the same time, camera-equipped smart glasses such as Meta’s were making it easy to record people who never agreed to it.

Sotreus is the answer to both: a calm, honest view of what is around and above you that stays on your own device.

“I wanted to rage-code and fight techno-fascism with the skills I had, and put them to their best use: defending personal security.”

Built by NetSepio

Sotreus is a product of NetSepio LLC, a privacy and security company founded in 2024 and rooted in the cypherpunk ethos. NetSepio’s small team of 2–10 people builds decentralized networking (DePIN), dVPN and cybersecurity tools, and is headquartered in Tbilisi, Georgia.

1. Install the app

Download the free APK from GitHub Releases for any phone on Android 9 or later, or install from the Solana dApp Store on a Seeker or other Solana Mobile phone. There is no account to create. See Download.

2. Run your first scan

Grant the Bluetooth and location permissions Android requires for scanning. Sotreus starts observing nearby Bluetooth LE and visible Wi-Fi straight away and answers the first question: what is here?

3. Let your places build a baseline

As you return to the places you use, Sotreus learns what is normal for each one. Mark devices as yours or expected, and the view settles down to what is new, persistent or re-encountered.

4. Switch on sky context, if you want it

Aircraft context is requested from OpenSky Network only when you turn it on, with Exact area, Coarse area or Off. Satellite passes are computed on your phone from CelesTrak orbital elements, and Remote ID broadcasts are received directly over radio.

5. Add Sotreus Edge

The first Sotreus Edge field units are going to early-access members. Join early access to be told when they are available.

Support and feedback

Email [email protected] for support, bug reports and partnership questions, open an issue on GitHub, or follow progress on X · @netsepio. Beta testers work directly with the team that builds the app.

What is Sotreus?

Sotreus is a local-first situational-awareness app for Android, made by NetSepio. It shows what nearby electronics are broadcasting, remembers what you have encountered before, and can add aircraft, drone Remote ID and satellite-pass context.

Will Sotreus find every hidden camera or tracker?

No, and it does not claim to. Sotreus shows evidence it can observe over Bluetooth LE and Wi-Fi, such as device-family signatures, recurrence and changes in a place, and leaves the conclusion to you. Devices that do not broadcast on those bands are not visible to it.

Does my data or location leave my phone?

Your radio history, places and journeys stay in a local database on your phone and are not sent to NetSepio. Aircraft context sends an area to OpenSky Network only when you switch it on, and you can choose a coarse area or turn it off. Satellite passes are computed on the phone.

Is Sotreus free?

The Android app is a free download from GitHub Releases, and its source code is public under GPL-3.0. Pricing for Sotreus Edge has not been announced yet.

Which phones does Sotreus run on?

Any Android phone running Android 9 or later, using the APK from GitHub Releases. Solana Mobile phones such as Seeker can install it from the Solana dApp Store. There is no iPhone version today.

Do I need Sotreus Edge?

No. The app works on its own, using your phone as the sensor. Edge adds continuous scanning while the phone sleeps, its own GNSS location and battery, and an off-grid Meshtastic mode.

Is Sotreus a missile or air-raid warning system?

No. Aircraft data is network-reported and can be delayed or incomplete, and Sotreus does not receive military or defence alerts. Always follow official civil-defence warnings.

Does Sotreus transmit or interfere with other devices?

No. Sotreus is receive-only: it never connects to, jams, deauthenticates, injects into or interrogates the devices around it. In Mesh Mode, Sotreus Edge simply runs as a Meshtastic node on your own LoRa mesh.

How can I become a beta tester or partner?

Email [email protected] with a line about who you are and how you would use Sotreus. We are especially keen to hear from journalists, researchers, digital-safety organisations and hardware or distribution partners.