Svalk
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For outdoor swimmers, all year

How cold is itright now?

Svalk shows the water temperature where you swim, logs every dip and looks out for you when you swim alone.

  • Free to download
  • Svalk+ free for 7 days
  • Norway, Sweden and Denmark
Svalk showing 3.2 degrees in the water at Sørenga, with the forecast for the next days.

Over 3,000 swim spots

From Oslo's harbour to Skagen. Find your spot on the map, or add your own jetty.

Including Sørenga, Huk, Nordnes sjøbad, Telegrafbukta, Ribersborgsstranden, Långholmens klippbad, Tylösand, Amager Strandpark and Svanemøllestranden.

One number. One tip.

Svalk reads the Norwegian Meteorological Institute's ocean model for your spot and says it plainly. Drag the thermometer.

3.2°

Ice cold. A minute or two is plenty.

Water data: MET Norway (CC BY 4.0). Temperatures are estimates; lakes have no water model, so you add your own reading there.

The season in Svalk: 14 dips, weeks in a row and a day-by-day calendar.

Every dip counts.

Log a dip in two taps: time in the water, temperature and whether you had a sauna after. Svalk counts weeks in a row and keeps your season day by day.

Streak
Weeks in a row with at least one dip. The current week doesn't break it until it's over.
Season plan
Your answers at the start become a plan: days, a goal and how long you usually stay in.
Apple Health
Every dip can be saved as a workout, with the water temperature.

Swimming alone? Someone's looking out.

Start a check-in before you go in. If you're not out in time, your buddy gets one text.

  1. 1
    Pick a time

    5, 10 or 15 minutes. You add your buddy once.

  2. 2
    A nudge first

    Your phone reminds you 2 minutes before, and again when time's up.

  3. 3
    A text after 3 minutes

    If you haven't checked out 3 minutes after the deadline, we send one message.

Svalk is not an emergency service. In danger, call 112.

Check-in running

Kari gets a message if you don't check out in time.

10:00
A swim group's leaderboard with a podium for the top three.

Swim together, compete a little.

Make a group for your swim crew, club or office and share the code. Or join a public group.

  • 1Most dips
  • 2Longest streak
  • 3Most days
  • 4Earliest up

The board never ranks time in the water or how cold it was. Nobody should push themselves to win.

Winter dips in January. Morning swims in July.

Svalk follows both seasons: winter from October to April, summer from May to September. Rosa swaps her beanie for a sun hat.

Svalk in winter: 3.2 degrees in the water.
Winter
Svalk in summer: 17.4 degrees in the water.
Summer

Free to use. Svalk+ when you want more.

Try Svalk+ free for 7 days. No commitment.

Free

€0 Forever

  • Water temperature at your usual spot
  • Dip log and streak
  • Groups and leaderboards
  • Apple Health

Svalk+

Try free

7 days free, then€17.99 per year

  • The forecast for the whole week
  • Water temperature on your Home Screen and Lock Screen
  • Check-in with a swim buddy
  • Season stats week by week
  • Every spot, not just your usual one
Try Svalk+ free

We remind you 2 days before the trial ends. Cancel before day 7 and you pay nothing.

Prices vary by country. The subscription is bought and renews automatically through the App Store, and you can cancel any time in Settings.

Get in the water.

Download Svalk, find your spot and see how cold it is. It takes under a minute.

Download on the App Store

Questions before you jump in

Where does the water temperature come from?

From the Norwegian Meteorological Institute's ocean model (MET Norway), read for the spot's coordinates. It covers the coast of Norway, Sweden and Denmark. Lakes have no model; there you can add your own reading.

What does Svalk cost?

Svalk is free. Svalk+ is €1.99 a week, €3.99 a month or €17.99 a year in the euro area (19, 39 or 199 kr in Norway and Sweden), and you can try it free for 7 days.

How does the swim buddy work?

You add the name and number of someone you trust, and start a check-in before you swim. If you don't check out within 3 minutes of the deadline, your buddy gets one text saying where you swam. The number is deleted 7 days after the check-in.

Do I need an account?

No. Svalk creates an anonymous account the first time you open it. Sign in with Apple is optional and only moves your data to a new iPhone.

What happens to my location?

Your location is only used on the phone to find nearby spots. It is never sent to us. Water data is fetched for the spot's coordinates, not yours.

Is Svalk on Android?

Not yet. Svalk is for iPhone. Write to us if you'd like to hear when Android arrives.