Tools · Open source
Activity Trace
David Neurieder
Find something you saw on your phone — privately and on-device.
Opens the official F-Droid page
About Activity Trace
Ever see something on your phone and then struggle to find it again?
ActivityTrace creates a private, searchable memory of your Android activity.
Search notifications, captured screen content, and indexed files from one place.
No Internet permission. No cloud. No account. No telemetry.
Your data stays encrypted on your device.
Find what you saw — one searchable timeline of notifications, screen content and files
Search naturally — type "yesterday", "last week" or plain keywords
Filter precisely — by app ( in:signal ) or content type ( type:notification ), with prefix matching, ranked results and highlighting
You control retention — choose how long data is kept and block individual apps
See when and where — statistics about captured activity over time
Encrypted at rest — SQLCipher AES-256-CBC + Android Keystore
Theme support — system default, light, dark, or OLED black
Demo mode — try ActivityTrace with fictional data, fully separate from your real activity
Privacy isn't a promise — it's an architecture. ActivityTrace has no Internet permission, so there is no hidden analytics endpoint, no cloud sync, and no telemetry waiting to be disabled. Your data cannot leave your device.
Free and open source software (GPL-3.0-only). Distributed via F-Droid: no Google Play Services, no proprietary dependencies, no AI or ML components.
What's new in 0.10.0
New features: - Demo mode — try ActivityTrace with curated fictional activity data - Theme selection — system default, light, dark, or OLED black - Search ranking — results ordered by relevance and recency (BM25 + FTS5) - Privacy settings screen documenting that events from blocked apps and password fields are never captured - Welcome screen with capture status dashboard and contextual setup guidance Improvements: - Encrypted backup/restore with integrity verification (backup envelope) - Search
How to install Activity Trace
- Tap Download — the app's official page on F-Droid opens.
- Install it with the F-Droid app (recommended, for automatic updates), or use the download button on that page.
- If Android asks, allow the F-Droid app or your browser to install apps, then tap Install.
- Open Activity Trace from your app drawer.




