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mactap
Knock your MacBook to run shortcuts
MacTap is a free, open-source macOS menu bar app that turns knocks on your MacBook chassis into shortcuts. One, two, or three knocks copy, paste, accept an AI suggestion, take a screenshot, control media, or anything you map. It reads the accelerometer inside the unibody (the same sensor that detects if your laptop is falling) and classifies knocks on-device. Nothing gets uploaded, no account, no network calls. Just a small native Swift app sitting in your menu bar.
Top comment
Hey PH! Jaskirat here. I posted MacTap on X yesterday as a joke — "made a dumb little mac app" — and woke up to 400k views, 1,573 likes, and 3,000+ downloads. So here it is on Product Hunt. The idea is simple: your MacBook already has an accelerometer sitting inside the chassis doing nothing 99% of the time. MacTap hijacks it to detect sharp knocks, one, two, or three, and maps them to whatever you want. Copy, paste, accept the AI suggestion, screenshot, lock, play/pause. No keyboard needed. It's native Swift, lives in the menu bar, and everything runs on-device. MIT open source. Happy to answer any questions, about the knock detection, the sensor pipeline, the privacy model, whatever. Knock away. 🍎
About mactap on Product Hunt
“Knock your MacBook to run shortcuts”
mactap was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #77 on the daily leaderboard. MacTap is a free, open-source macOS menu bar app that turns knocks on your MacBook chassis into shortcuts. One, two, or three knocks copy, paste, accept an AI suggestion, take a screenshot, control media, or anything you map. It reads the accelerometer inside the unibody (the same sensor that detects if your laptop is falling) and classifies knocks on-device. Nothing gets uploaded, no account, no network calls. Just a small native Swift app sitting in your menu bar.
On the analytics side, mactap competes within Mac, GitHub, Menu Bar Apps and Apple — topics that collectively have 173k followers on Product Hunt. The dashboard above tracks how mactap performed against the three products that launched closest to it on the same day.
Who hunted mactap?
mactap was hunted by Jaskirat Singh. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of mactap including community comment highlights and product details, visit the product overview.