Plask turns your Apple Watch into a tiny aquatic theatre: pixel-art rubber ducks that dive when you do, your real depth on screen, and a duck or ten. With premium, you get sharks, the Loch Ness-monster, a castaway, surströmming, and more.
I made my Apple Watch's depth sensor do something deeply unserious.
Apple ships a serious dive instrument in the Ultra and Series 10+ - and most owners never use it once. Plask points it at the bathtub: pixel-art rubber ducks swim on your wrist, and because the depth data is real, they dive when you do - live depth, max depth, water temperature. On depth-gauge watches it even launches itself the moment your wrist goes under.
There's also Kungliga Badverket, a fictional Royal Swedish Bath Authority that issues 42 pixel-art certificates for your bathing career - first splash, dips below five degrees, and stranger things. Earn enough and the duck gets a hat.
Free with the yellow ducks, forever. One purchase ($1.99 - no subscription, no account, it collects nothing) unlocks nine more scenes: sharks, jellyfish, aliens, Loch Ness, and surströmming - fermented Swedish herring, which felt right.
Built solo in Gothenburg, Sweden. No bathtub? Demo mode drives the water with the Digital Crown.
Scene ideas welcome - the engine makes new ones cheap, and Midsommar is already on the list.
@yashekbote Oh, I have so many ideas! Midsommar is a good one. I am also thinking about a duck hunt-themed scene, but please don't tell my ducks. I would like to do something with Regalskeppet Vasa (the Swedish warship that sank on its maiden voyage in the 17th century) and I really want to do something with a Norwegian Blue parrot that is pining for the fjords!
@damjanski I'm glad you love it! All I want is to bring a little more joy. Pro-tip: kids absolutely love the Plask scenes. There will be a lot of updates coming, so keep your eyes peeled!
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love the idea of actually using the depth sensor for something other than diving logs nobody looks at twice. question though - I've got a regular Series 9, not an Ultra or Series 10+. is demo mode basically the whole experience for me (crown-driven water, no real depth data at all) or is there some lesser version that still reacts to being near water/humidity even without the proper sensor
@galdayan Hi! For now, the main feature is the water and depth detection that comes with the sensors on the newer watches and Ultras. Older watches will have to settle with the demo mode - but it's perfectly possible to open the demo mode, turn on the water lock, and go for a swim! You just won't get real depth measurement.
The next version will bring a fun feature that doesn't require sensors or waters, so keep an eye out!
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@danni_efraim that's a fair tradeoff honestly - crown-driven water lock plus the demo mode is enough to not feel left out. good to hear the next feature won't gate on the sensor at all, that opens it up to way more of your userbase than just Ultra/Series 10+ owners. will keep an eye out for it
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Thank you,
We need more fun apps. I miss the Talking Moose, Oscar the Grouch, MacPuke, Racter... And what else was there for the old Mac? Now everything is so effin’ serious…
Plask
@danni_efraim Awesome Launch Danni!
Auto-launching when your wrist hits water on depth-gauge models is a great touch.
Curious, What's next on the scene list after Midsommar?
Plask
@yashekbote Oh, I have so many ideas! Midsommar is a good one. I am also thinking about a duck hunt-themed scene, but please don't tell my ducks. I would like to do something with Regalskeppet Vasa (the Swedish warship that sank on its maiden voyage in the 17th century) and I really want to do something with a Norwegian Blue parrot that is pining for the fjords!
Humans Not Invited
@danni_efraim loooove
Plask
@damjanski I'm glad you love it! All I want is to bring a little more joy. Pro-tip: kids absolutely love the Plask scenes. There will be a lot of updates coming, so keep your eyes peeled!
love the idea of actually using the depth sensor for something other than diving logs nobody looks at twice. question though - I've got a regular Series 9, not an Ultra or Series 10+. is demo mode basically the whole experience for me (crown-driven water, no real depth data at all) or is there some lesser version that still reacts to being near water/humidity even without the proper sensor
Plask
@galdayan Hi! For now, the main feature is the water and depth detection that comes with the sensors on the newer watches and Ultras. Older watches will have to settle with the demo mode - but it's perfectly possible to open the demo mode, turn on the water lock, and go for a swim! You just won't get real depth measurement.
The next version will bring a fun feature that doesn't require sensors or waters, so keep an eye out!
@danni_efraim that's a fair tradeoff honestly - crown-driven water lock plus the demo mode is enough to not feel left out. good to hear the next feature won't gate on the sensor at all, that opens it up to way more of your userbase than just Ultra/Series 10+ owners. will keep an eye out for it
Thank you,
We need more fun apps. I miss the Talking Moose, Oscar the Grouch, MacPuke, Racter... And what else was there for the old Mac? Now everything is so effin’ serious…
Plask
@claes I agree wholeheartedly! More fun!
Product Hunt Wrapped 2025
Best of luck in the launch day!
Plask
@alexcloudstar Thanks, Alex! It's my first launch on PH, and honestly, I'm really happy - it's going well above my expectations!