Mossy is a small plant that lives on your Mac desktop. The longer you sit without a break, the more it wilts. You write one sentence about what your breaks should be. Stretch my bad back. 20 push-ups. Teach me a Spanish word. Just make me stand up. An AI writes every break from that sentence, one task at a time, with a timer. It never blocks or dims your screen. Ignoring it is a normal way to use it. Free, no account, 1.4 MB, native, macOS 12+.
I'm a developer and I sit about ten hours a day. My lower back has been going out on me for years. I also play basketball, and I tore my ACL last October, so this year has been surgery, physio, and even more chair than usual.
My wife is an architect. Same laptop, same chair, same ten hours. We have a one year old, so "just train in the evening" is a fantasy. We built Mossy for the two of us, to kill the sitting, after deleting every break app we tried. They all failed the same way: the full screen break lands mid-sentence, you skip it, and a week later it's gone.
So Mossy never blocks anything. It sits in the corner, wilts while you sit, and waits. Refusing a break is a normal way to use it, not a failure to correct.
The second thing we needed was breaks that fit our own bodies. Mine needs hip and psoas work, hers doesn't, and no fixed stretch list was ever going to cover both. So you write one sentence and an AI writes each break from it. Your words decide what you do, and nothing in the app inspects what you asked for. Write "20 push-ups" or "teach me a
Spanish word" and that is what you get.
The key for that AI lives on a small relay, never in the app. The only things that leave your Mac are that one call and an anonymous daily ping you can switch off. No account, no tracking. It isn't medical advice, and the app says so itself.
Free, native Swift, 1.4 MB, macOS 12+.
About Mossy on Product Hunt
“ A desk plant that wilts when you need a break”
Mossy launched on Product Hunt on August 29th, 2026 and earned 91 upvotes and 11 comments, placing #9 on the daily leaderboard. Mossy is a small plant that lives on your Mac desktop. The longer you sit without a break, the more it wilts. You write one sentence about what your breaks should be. Stretch my bad back. 20 push-ups. Teach me a Spanish word. Just make me stand up. An AI writes every break from that sentence, one task at a time, with a timer. It never blocks or dims your screen. Ignoring it is a normal way to use it. Free, no account, 1.4 MB, native, macOS 12+.
On the analytics side, Mossy competes within Mac, Health & Fitness and Productivity — topics that collectively have 846.2k followers on Product Hunt. The dashboard above tracks how Mossy performed against the three products that launched closest to it on the same day.
Who hunted Mossy?
Mossy was hunted by Mossy. 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 Mossy including community comment highlights and product details, visit the product overview.
Mossy