Fact sheet
- What
- Plask (Swedish for "splash") — pixel-art aquatic scenes for Apple Watch that react to real water depth while you bathe or swim.
- Tagline
- Rubber ducks. Real depth.
- Price
- Free. Premium is a $1.99 one-time purchase (local pricing applies) — no subscription, no account.
- Premium
- 9 extra scenes (Aquarium, Sharks, Octopi, Aliens, Loch Ness, Jellyfish, Castaway, Surströmming, Bioluminescence), 6 extra duck colors including Goth, depth-gauge overlays, and Surprise Me — a different scene every dive. Four more (Fjorden, Vasa, Skjutbanan, Midsommar) arrive in 1.3.
- Achievements
- 45 pixel-art certificates from Kungliga Badverket, the fictional Royal Swedish Bath Authority — depth, endurance, cold water, dawn dips and stranger things; roughly one in five is a sealed file. Milestones earn the duck a hat (snorkel, viking helmet, flower crown, nightcap, knitted mössa). Included in the free version; the archive syncs through the user's own iCloud.
- Kama-Duck-Chi
- Coming in 1.3. Between baths the duck lives on the launch screen with an off-duty life of its own: a dossier, a provisions journal, toys, the earned-hat wardrobe, and a deadpan absence report filed whenever the user has been away. Deliberately the inverse of a pet sim — no meters, no decay, no death, no streaks and no notifications; it cannot be neglected. Included in the free version.
- Temperature
- On depth-sensing watches the scenes react to the water's temperature: below about 12 °C scarves come out and breath fogs, and under 6 °C the surface ices over; above about 24 °C it steams, and a hot bath or hot tub past 32 °C gets bubbles and lounging ducks. Lake and pool temperatures in between are deliberately unchanged.
- Devices
- Any watch on watchOS 10 or later runs the animations. Live depth (plus max depth and water temperature) needs a depth gauge: Apple Watch Ultra (any generation) or Series 10 and later. These watches can also auto-launch Plask the moment you submerge.
- Privacy
- Collects nothing. No accounts, no analytics, no tracking. Swim history syncs only via the user's own private iCloud.
- Released
- Version 1.2 — water temperature reaches the scenes. 1.1 was the initial App Store release. 1.3 is with App Review.
- App Store
- apps.apple.com/app/plask/id6794797715
- Maker
- Danni Efraim, Compiled — Gothenburg, Sweden
- Contact
- plask@compiled.se
For fun in shallow water. Plask is not a dive computer.
The story in one paragraph
The Apple Watch depth sensor was built for freedivers and scuba apps. Plask points it at the bathtub instead: pixel-art rubber ducks paddle across the watch face while you bathe or swim, and because the depth data is real, the ducks dive when you do — with live depth, max depth and water temperature along the bottom. On depth-gauge models — Ultra, or Series 10 and later — the app even launches itself the moment your wrist goes under. Kungliga Badverket — a fictional Royal Swedish Bath Authority — also issues pixel-art certificates for your aquatic accomplishments, from first splash to swims below five degrees, and the duck can earn a viking helmet. It's free, the premium scenes cost $1.99 exactly once, and the whole thing collects no data at all. Made by one developer in Gothenburg who felt Sweden's most serious wearable deserved something less serious.
Djupsensorn i Apple Watch byggdes för fridykare och dykappar. Plask riktar den mot badkaret i stället: badankor i pixelkonst simmar över urtavlan medan du badar, och eftersom djupdatan är på riktigt dyker ankorna när du gör det — med aktuellt djup, maxdjup och vattentemperatur i underkant. På klockor med djupsensor — Ultra, samt Series 10 och senare — kan appen dessutom öppna sig själv i samma ögonblick som handleden hamnar under ytan. Kungliga Badverket — en fiktiv svensk myndighet — delar dessutom ut pixelcertifikat för dina simprestationer, från första plasket till dopp under fem grader, och ankan kan förtjäna en vikingahjälm. Gratis; premiumscenerna kostar $1.99 (engångsköp), och appen samlar inte in någon data alls. Byggd av en ensam utvecklare i Göteborg — inklusive en surströmmingsscen, eftersom någon måste.
For reviewers
You don't need a bathtub. Demo mode ("Try a Dive") drives the water with the Digital Crown, on any Apple Watch — couch, desk, or train. Real submersion always takes over automatically on depth-gauge watches.
Premium unlock codes for the full scene set are available on request — email plask@compiled.se and one comes back the same day. All ten scenes are also pictured below, if you'd rather not install anything.
Moving pictures
GIFs loop and are email-friendly; MP4s are the same clips at full frame rate. Straight from the watch — pixel-perfect, no bezel, ready to embed.
Screenshots
Native watch resolution (422×514) and 3× nearest-neighbor upscales (1266×1542) — pixel art enlarges losslessly, so the big ones stay razor sharp in print and retina layouts. Click any download link for the 3× version.
Everything at once
Download the full kit (.zip)App icon (1024px), all screenshots at 1× and 3×, the GIFs and MP4s, and this fact sheet as plain text. Images may be used in editorial coverage of Plask. Please don't recolor the duck; it has been through enough.
About the maker
Danni Efraim is a developer and founder of Compiled, a software studio in Gothenburg, Sweden. Plask is what happened when a Gothenburg summer met Apple's most serious sensor — and it is comfortably the least serious app Compiled has shipped.
Interview languages: Swedish, English. Response time during launch weeks: same day.