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Spectre

Spectre is a free, open-source developer tool for Android. Radio frequency scanner with recon and offensive capabilities. It has 194 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.

github.com/thomasbuilds/Spectre (opens in a new tab)

Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error

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About Spectre

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. Spectre also features a growing set of pentesting tools, constrained by Android's security model. Features: • RF exposure - total received power from cellular, Wi-Fi, and Bluetooth as one live dBm reading • Cellular - serving and neighbor cells on 5G, 4G, 3G, and 2G, across both SIMs • Wi-Fi - 2.4, 5, and 6 GHz access points, with security analysis and 802.11mc FTM ranging • Bluetooth LE - advertising devices with decoded manufacturer data, including iBeacons • GNSS - multi-constellation,…

Privacy and F-Droid

F-Droid builds Spectre from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

No anti-features flagged on the latest F-Droid build.

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FAQ

Spectre FAQ

Still curious? Email info@appsgit.com.

Is Spectre free and open source?

Yes. Spectre's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.

How do I install Spectre?

You can install Spectre from F-Droid (package dev.thomasbuilds.spectre); the links are on this page. Its GitHub repository also publishes releases (latest: v0.1.3).

Is Spectre still maintained?

The repository's most recent commit was on Oct 13, 2026. Its F-Droid listing was last updated on Aug 1, 2026. appsgit only lists apps whose repository had a commit in the last six months.