LemmeKnow
It's not just a feature, he's a bug.
What LemmeKnow does
LemmeKnow is an Android app that decides how each notification on your phone reaches you, from a quiet note to an alarm that keeps going until you look.
Rules for any app
Pick the notifications that matter by app, sender or words. Show them normally, nudge you with a vibration or a spoken message, raise an alert that keeps going until you look, or silence them. Quiet rules hold them back while you're driving, on a call or asleep.
Make it yours
Dozens of themes with their own textures and palettes, RSS feeds, rules that wake when you get home, and alerts and nudges on your Wear OS wearable.
Go further with Premium
Bring in your PCs and servers: their logs and pings, and with the LemmeSee hub, approvals, dashboards and camera streams. Premium also adds full-screen delivery screens and custom actions.
How it works
Install LemmeKnow
It's free on Android. Give it notification access so it can see your other apps' notifications.
Choose what matters
Make a rule for an app, a sender or a word in the message.
Choose how it reaches you
Notify, Nudge, Alert or Silence, built from steps like vibration patterns, sounds, spoken words, Morse code and camera light flashes.
Go further
With Premium, connect a PC running LemmeKnow Server or the LemmeSee hub and its messages reach your phone too.
The documentation covers every feature in detail.
Privacy
There's no LemmeKnow account to sign up for, and nothing the app sees is sent to us.
On your phone
Your rules, settings and message history are stored on your phone. What the app reads to decide when rules apply, like other apps' notifications, your location or your Wi-Fi network, is used on your phone only.
No tracking
No analytics, telemetry, usage metrics or crash reports are sent to us. We don't run a server the app reports to.
Your servers
If you connect your own servers, the app talks only to the ones you add, and sends them only what they need, like your sign-in and your answers to their requests.
Sealed plugins
Themes and delivery screens installed from a file can't send data anywhere. Plugins from your own hub can reach only that hub and the hosts they list when you install them.
Read the full privacy policy.
Get LemmeKnow
LemmeKnow is free to download. Premium is a one-time purchase that unlocks everything else, with no subscription.
Downloads has the desktop hub and delivery screens for your lock screen.