Radio frequency scanner with recon and offensive capabilities
About this app
Spectre is an Android app for observing and interacting with the wireless environment around you. It monitors signals from Bluetooth devices, Wi-Fi access points, cellular towers, and GNSS satellites, and features a growing set of pentesting tools, constrained by Android's security model.
Features:
• Live RF exposure gauge: a single dBm figure for the total received RF power across cellular, Wi-Fi, and Bluetooth • Cellular: serving and neighbor cells on 5G, 4G, 3G, and 2G with operator, identifiers, bands, reference measurements, and a timing-advance distance estimate where available • Wi-Fi: access points on the 2.4, 5, and 6 GHz bands with vendor, security, cipher, channel, width, and a distance estimate, including true 802.11mc FTM ranging where the hardware supports it • Bluetooth LE: advertising devices with name, MAC, vendor, RSSI, address type, PHY, service UUIDs, and decoded manufacturer data including iBeacon • GNSS: multi-constellation tracking with dual-frequency support, carrier-to-noise, elevation, azimuth, used-in-fix status, and a computed sub-satellite ground point • Local-network scan: host discovery via TCP-connect probes and SSDP/UPnP, with banner grabbing, service fingerprinting, and reverse DNS, plus mDNS/DNS-SD service discovery • GATT inspector: connect to a BLE device, enumerate its services and characteristics, read and decode their values, and write to writable ones • iBeacon broadcast: broadcast as an iBeacon with configurable UUID, major, minor, and measured power
Spectre requests location, Bluetooth, and phone-state permissions because Android gates Wi-Fi scan results, BLE scans, and cell identities behind them. Everything runs on-device. There are no ads, no trackers, and no Google dependencies. Network access is used only to probe devices on your own local network.
Licensed under GPL-3.0-only, by Thomas Giudici.
What's New in v0.1.2
Imported from the F-Droid repository index.
- • Cellular: correct channel frequencies (incl. 3G), all neighbor cells, dual-SIM
- • Wi-Fi: accurate WPA3/OWE labels, Wi-Fi 7 (320 MHz) and 6 GHz, cipher/vendor info, vendor filter
- • Bluetooth: extended BLE scanning, address-type filter, fuller device names, steadier GATT inspector
- • GNSS: fixed BeiDou orbit; range-rate, ephemeris and almanac; per-satellite view
- • Local network scan (renamed) with Android 17 support
Version history
Jul 13, 2026 · 3.3 MB · Android API 31–37 · code 102999
Imported from the F-Droid repository index.
- • Cellular: correct channel frequencies (incl. 3G), all neighbor cells, dual-SIM
- • Wi-Fi: accurate WPA3/OWE labels, Wi-Fi 7 (320 MHz) and 6 GHz, cipher/vendor info, vendor filter
- • Bluetooth: extended BLE scanning, address-type filter, fuller device names, steadier GATT inspector
- • GNSS: fixed BeiDou orbit; range-rate, ephemeris and almanac; per-satellite view
- • Local network scan (renamed) with Android 17 support
SHA-256 8d50fb4b5136777cb7ced9e305406bd19362f32e7541d99cefe1fcf2b9386a8b
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be dev.thomasbuilds.spectre is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
No earlier build is on record for Spectre, so there is nothing to roll back to yet. When a second version is published, this section will explain how to move between them safely.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Spectre, and a listing is removed when the evidence for it stops holding up.
Get Spectre
Every source we list for dev.thomasbuilds.spectre is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
8d50fb4b5136777cb7ced9e305406bd19362f32e7541d99cefe1fcf2b9386a8b
Signing certificate
c411409b94f36b678ca8c957b675d2f1ad5b7fc01a352bff4c99ed2ffbc11b39
Permissions Required
What each permission lets Spectre do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
No earlier build is on record — this is the first release we have listed.
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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