Notes 
An Android application that leverages on-device sensors to provide monitoring and protection of physical areas. Turns Android phones into a motion, sound, vibration and light detector, watching for unwanted intruders.
Reviewed by Gabriel Bachmann
Haven
guardianproject.github.io/haven 2 ratings so far*
Rate Haven: No account needed
Threat level
Targeted
A targeted-tier tool. Built for a real, capable adversary. Overkill for everyone below. Threat levels
Our take
A clever idea, turning a spare Android phone into a motion, sound, and light sensor to watch a room or a laptop, and it is the right tool for a very specific physical-security worry. Be aware it has seen little development for years, so judge it as a stable-but-static project rather than something actively improving. Useful if you have an old phone and a concrete reason to monitor a space; do not expect ongoing updates or polish.
GitHub at a glance
guardianproject/haven GPL-3.0 androiddevice-sensorsmonitoring-serviceprototype-android-applicationsensor
Stars
6,824
-2 this week
Forks
747
277 watching
Last commit
4.0y ago
slowing
Latest release
0.2.1-beta-1
5.3y ago, 37 total
Star history
Issues
51% closed
147
open
156
closed
+0 / -0
opened / closed, last 4 weeks
Opened vs closed, last 12 weeks
Commits, last 26 weeks
0 commits, active 0 of 26 weeks
52 contributors since Mar 2017
Languages
- Java 86.7%
- Kotlin 12.2%
- HTML 0.7%
Updated daily from the GitHub API. Star tracking since Jun 15, 2026.
Website at a glance
guardianproject.github.io
F score 10
Weak website security headers
Graded by Mozilla HTTP Observatory, tested 2d ago
Inspect this site yourself
Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.
Haven alternatives
EFF Electronic Frontier Foundation offers tips, tools and how-tos for safer online communications.
SecureDrop Software that news websites install to offer whistleblowers a plattform for secure communication and file transfers. Requires Tor Browser for anonymity in order to access. List…
GlobaLeaks Alternative to SecureDrop. Easily set up a secure and anonymous whistleblowing initiative. Designed to be user-friendly, the software is customisable and protects the…
Briar Briar doesn't rely on a central server: messages are synchronized directly between the users' devices via Bluetooth or Wi-Fi. Online sync via the Tor network is possible, too.…
OnionShare OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Share files, host websites,…
Haven license, in plain English
GPL-3.0 Strong copyleft
Free to use and modify, but anything you distribute that is built on it must also be open under the same license.
Permits
- Commercial use
- Modification
- Distribution
- Patent use
- Private use
Requires
- Disclose source
- Same license
- State changes
- License and copyright notice
Does not provide
- Liability cover
- Warranty
Why it matters: Strong copyleft keeps every distributed version open. A vendor cannot fold this into a closed product and ship it without releasing their changes.
Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.
* Average ratings will show on this page once the threshold of 5 ratings is reached.