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About Gemma Guard
Android app that captures the screen, runs OCR, and uses Gemma 4 locally to detect and explain phishing risks before users tap. Gemma Guard was built for the Google Gemma 4 Good Hackathon as a privacy-first Android app that shows how Gemma can be used in a real mobile safety workflow: capture a risky screen, reason locally, explain the result, and help the user act safely.
Frequently asked questions
What is Gemma Guard used for?
Gemma Guard — Android phishing detection with on-device Gemma 4.Is Gemma Guard free?
Gemma Guard is free to use.What are alternatives to Gemma Guard?
Top alternatives to Gemma Guard include Coursebox, SvelteLaunch, Damn Good Tools, IndexApps, Clipdrop.Where can I get Gemma Guard?
Gemma Guard is available at https://gemmaguard.org/.What category is Gemma Guard in?
Gemma Guard is listed in Other.What exactly does Gemma Guard do?
It captures the current Android screen, extracts visible text with OCR, and uses Gemma 4 locally to determine whether the content looks like phishing.Why use Gemma instead of simple keyword rules?
Phishing is often about context and visual deception. Gemma helps the app reason over the layout, wording, and overall screen together.Does the screen get uploaded anywhere?
The core experience is designed to run on-device, so private messages and sensitive screens do not need to leave the phone for analysis.Who is this built for?
Everyday Android users, including older adults and families, who want a quick second opinion before tapping a suspicious screen.
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