Activity Trace

Activity Trace is a notification application developed by David Neurieder, packaged as a single Android APK of version 0.8 weighing in at 11.26 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

1. Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
2. File size is a light 11.26 MB, so it installs quickly even on modest connections.
3. This build is signed by "David Neurieder" — always verify the developer name matches what's listed on the app's official store page before installing an update.
4. After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
5. We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

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.

Is Activity Trace free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Activity Trace require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Activity Trace safe to install?
We link to the exact APK published by David Neurieder. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Activity Trace?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

1. Tap the Download APK button above and save the file to your device.
2. Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
3. Open the downloaded com.activitytrace.apk file from your Downloads folder.
4. Tap Install and wait for Android to finish.
5. Open «Activity Trace» by David Neurieder and grant only the permissions it actually needs.
6. Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.