A personal safety layer for any address.

AddressAlarm is a free, open-sourceThe app's code is public and can be reviewed by anyone. Click to learn more. Android app that runs 100% on-device. It watches for addresses you've flagged and alerts you discreetly, helping you avoid risky, curious, or problematic locations before you commit.

Current build: v0.2.42

Field Test Build 2 Download the latest version of the app here

Grab the refreshed build and follow the full installation guide so your device is ready on install day.

An essential tool for professionals and the public

Originally built for gig workers, AddressAlarm is now a vital tool for anyone who navigates unfamiliar locations.

📮 Couriers & Rural Carriers

Privately note hard-to-find mailboxes, unsafe routes, or households that need extra caution before you pull up.

🚕 Taxi & Rideshare Drivers

Get a subtle warning before accepting pickups or drop-offs tied to dangerous requests, no-show zones, or past harassment.

🛠️ Gig Taskers & On-Demand Pros

Flag customers who weaponize tips, misrepresent jobs, or create unsafe conditions so you can plan safer alternatives.

👮 Law Enforcement & Social Workers

Get a heads-up when approaching a location with a known history of hostility or special circumstances.

🏡 Real Estate & Contractors

Tag properties with notes about access, hazards, or client-specific information for your entire team.

🙋‍♀️ The General Public

A simple, private way to remember addresses you'd rather avoid for any reason.

Worker safety comes first, even when platforms disagree

I built AddressAlarm after too many late-night routes where GPS led me to unlit driveways, customers hurled threats, or tip-baiters dangled pay only to yank it back. Those sketchy encounters showed how easily bad-faith customers exploit "customer service" policies while contractors are told to smile and take it. This tool exists because safety shouldn't be optional or traded for ratings.

Gig apps often prioritize volume over people. Many won't let contractors block abusive clients or decline anonymous offers, creating a major safety gap that AddressAlarm helps close by giving you the context those systems withhold.

⚖️ Know the terms (and limits)

Some gig platforms may claim tools like this violate their Terms of Service. Use AddressAlarm at your own discretion and risk. We can't accept responsibility if a company penalizes you, but we can be clear that protecting yourself is never wrongdoing.

✊ Push back together

Talk with other workers, document retaliation, and contact platform support, regulators, and press when policies put "customer service" ahead of your safety. Collective action is how we pressure companies to respect contractor rights.

🛡️ Built to protect, not to cheat

This tool is exclusively for preventing harmful encounters. It doesn't auto-accept, auto-decline, or manipulate pricing. It simply restores information so you can say no to unsafe work.

How AddressAlarm fits into your phone (ELI5)

AddressAlarm sits quietly alongside the apps you choose. It reads the address on screen, compares it to your private watchlist, and gently alerts you if there's a match—nothing more. 

Your Watchlist (stored on-device)
           │
           ▼
    AddressAlarm Service
           │ checks addresses you view
           ▼
Maps / Gig App ➜ Small overlay reminder just for you

Only platforms that already monitor background processes—something their murky TOS currently allow so they can police whether you're protecting your own interests—could notice AddressAlarm running as an accessibility service. That surveillance power should be tightly audited and regulated strictly toward preventing contractors or customers from cheating or abusing the system, not to punish workers for staying safe.

We urge you to keep advocating for policies that let contractors block dangerous customers, demand transparency about monitoring, and insist that safety comes before metrics. AddressAlarm is one small, calm way to watch out for yourself without fear mongering—because your life is worth more than any single fare or delivery.

Everything you need to stay aware

🔒 Private & Offline-First

All address matching happens locally. No data ever leaves your device. No servers, no tracking, period.

🏷️ Custom Flags & Tags

Organize your watchlist with tags like "unsafe pet," "hostile," or "use back entrance" so you have context in the moment.

🧠 Smart, Debounced Alerts

Notifications are rate-limited to prevent alert fatigue. The overlay is clear, simple, and designed for at-a-glance safety.

📲 Per-App Visibility

You choose exactly which apps AddressAlarm should monitor. It stays dormant until an app you've enabled is in the foreground.

↔️ Import & Export

Easily back up your flagged addresses or share your watchlist with trusted friends and colleagues.

✅ You're In Control

This tool is a memory aid, not automation. It gives you information so you can make the final choice. It never auto-declines or accepts jobs.

Getting Started is Simple

Watch the full setup walkthrough & live demo

Learn how to install AddressAlarm, grant the right permissions, enable notifications, and see a real-world alert in action. The video walks you from a blank device to a fully configured watchlist in minutes.

  1. Download the APK from the latest GitHub release.
  2. Install the app and enable the "AddressAlarm" accessibility service in your phone's settings.
  3. Build your watchlist by adding addresses, notes, and tags.
  4. Select which apps to monitor (e.g., Google Maps, Uber Driver).
  5. Get alerted! When a flagged address appears in a monitored app, a warning overlay will appear.

Need a hand? Watch the full walkthrough above or follow the detailed Installation Guide for Pixel, Samsung, and other devices.

Download AddressAlarm

The app is free, open-sourceThe app's code is public and can be reviewed by anyone. Click to learn more., and ready to install.

Current build: v0.2.42

Field Test Build 2 Download the latest version of the app here

Freshened field test build with stability fixes. Requires Android 8.0 (Oreo) or newer.

What’s Next?

AddressAlarm is actively developed. Here are some of the major features planned for the future:

  • Encrypted storage for watchlists Shipped Jan 15, 2025

    Your watchlist now stays encrypted at rest so sensitive notes never leave your device unprotected.

  • Fuzzy address matching

    Match "Apt 4B" with "Unit 4B" and other tricky variants so nothing slips through.

  • Optional voice and TTS alerts

    Enable spoken cues for hands-free awareness while you stay focused on the road.

  • Guided onboarding tour

    Walk new users through setup and best practices right inside the app.

  • Distribution via F-Droid

    Offer an easy, privacy-respecting install path outside of manual APK downloads.

See the full roadmap for more, or suggest a feature on GitHub.

Support the mission in good faith

AddressAlarm is designed, coded, and tested by a solo developer squeezing in late nights between 40–60 hour courier shifts. If this project helps you stay safe, consider backing the hosting costs and future builds so it can keep shipping.

Every contribution is a vote for worker-built tools—covering server bills today and buying time to craft tomorrow's safety updates. Choose a simple monthly contribution or a one-time donation—whatever fits your budget keeps the alerts flowing for everyone relying on them.

Support AddressAlarm

What is Open Source?

AddressAlarm is a FOSSFree and Open Source Software project. That means it's more than just free of charge—it's built on a foundation of freedom, transparency, and community.

📖 The Source is Open

The "source code"—the human-readable instructions that make the app work—is available for anyone to see, study, and verify. There are no hidden agendas. You can see exactly how AddressAlarm protects your data because the code is public on GitHub.

🤝 Freedom & Collaboration

You have the freedom to use the software for any purpose and even modify it. This encourages a global community of developers and users to work together, share improvements, and make the tool better for everyone.

💖 Community Supported

This project is not owned by a corporation. It's built and maintained by volunteers and is funded entirely by user donations. This ensures the project's goals will always stay aligned with the users' best interests: privacy, security, and safety.

For Developers & Contributors

AddressAlarm is a community-driven, FOSSFree and Open Source Software. Click to learn more. project licensed under AGPL-3.0. We welcome contributors of all levels. Check out the source code, review our coding standards, and help us build the future of on-device safety tools.

Contributing Guide • Security Policy • Support Channels