30 days of free beta on every app · one-time code · no subscription
DIALFORGE

Water sports

Cold Plunge

A dip timer for ice baths, winter swimming and cold lakes, built for wet gloves, fog and bad light: huge numbers, buttons only, phase shown as text and colour.

Coming to Connect IQ Unlock €5.99

Cold Plunge icon

Beta: free for 30 days

The app works fully and for free for the first 30 days after you first open it. After that you can buy a one-time unlock code below. No subscription.

No phone app, no account. Everything stays on the watch and in Garmin Connect. The app never tells you a duration is safe: every number is a target or reminder you set yourself, not a medical claim.

  • Pre-dip checklist (not alone, feeling well, dry clothes ready) and a water temperature picker, both optional
  • Warm-up, dip and rewarm phases, each a separate lap, as many dips per session as you want
  • Dip target as a fixed time, open (no target) or the Polish clubs' rule (minutes = degrees C, capped at 5 minutes and never below 30 seconds), with a pulse and a red ring when you reach it
  • Rewarm screen rotates dry off / warm drink / no hot shower yet reminders
  • Optional breathing pace for the first minute, interval buzz, GPS fix at the start, watch temperature sensor as a FIT field
  • History of the last 20 sessions, personal records, weekly cold-minutes goal
  • Records as a Cardio or Breathwork activity with phase, dip number and lap time as Garmin Connect fields

How to use it

Open Cold Plunge from the watch's app menu.

Controls: START enters or leaves the water, BACK opens the session menu (continue, save, change temperature, discard) outside the water. In the water only START works, nothing else, so a wet sleeve cannot end your dip early. Settings (outside a session): hold UP, press DOWN or MENU; on touch-only watches hold the screen.

Manual

Cold Plunge: user manual

What it does

Cold Plunge times ice baths with huge numbers and buttons only: warm-up, any number of dips, rewarming. One activity is saved, a lap per phase.

Requirements and supported watches

Needs Connect IQ 3.3.0+ and the Connect IQ or Garmin Connect phone app. Supported watches:

  • Round AMOLED: epix 2 and epix Pro 2, fēnix 8, E, Forerunner 165, 265, 570, 965, 970, Instinct 3 AMOLED, Crossover AMOLED, Venu 2, 3, 4, vivoactive 5, 6.
  • Round MIP: enduro 3, fēnix 7 series, 8 Solar, Forerunner 55, 245, 255, vivoactive 4.
  • Square and rectangular AMOLED: Venu Sq 2, Venu X1.

Installation

In the Connect IQ app on your phone (or Garmin Connect, then the Connect IQ Store) find "Cold Plunge" by Dialforge, tap Install and sync the watch. Open it from the apps list: press START on the watch face, then pick Cold Plunge.

First launch

The main screen shows READY, your minutes this week and the last session. START opens the checklist and temperature picker, then WARM-UP begins. The 30-day free beta starts the first time you open it.

Controls

Watches with buttons (START, UP, DOWN, BACK)

  • START: warm-up to water, water to REWARMING, rewarming to the next dip. In the water only START works, so a wet sleeve cannot end a dip.
  • BACK in warm-up or rewarming opens Continue, Save, Water temperature, Discard.
  • Outside a session hold UP, press DOWN or MENU for Settings.

Touch watches (tap, hold, swipe)

  • Two-button touch watches: BACK steps through menus, holding it cancels. Touch is off during a session.

Settings

Phone: Connect IQ app, Cold Plunge, Settings (the unlock code fields are there too).

  • Dip target: 60 options, 0:15 to 15:00. Default: 1:00.
  • Target mode: Preset, Open, Temperature rule. Default: Preset.
  • Warm-up: number, seconds. Default: 300.
  • Rewarm reminder: number, seconds. Default: 900.
  • Checklist: on or off. Default: on.
  • Water temp prompt: on or off. Default: on.
  • Breathing pacer: on or off. Default: off.
  • Interval buzz (30 s): on or off. Default: off.
  • Tones: on or off. Default: off.
  • Record location: on or off. Default: off.
  • Watch sensor temp: on or off. Default: on.
  • Save as: Cardio, Breathwork. Default: Cardio.
  • Weekly goal: 7 options, Off to 30 min. Default: Off.

License

  • Free beta: 30 days from the first launch, everything works.
  • Price: 5.99 EUR once at dialforge.dev, no subscription. The 8-character code is tied to your watch's UID.
  • Where to enter it: phone, Connect IQ app, Cold Plunge, Settings. Read the UID in "Watch UID (needed to buy a code)", buy the code, then type it into "Unlock code from dialforge.dev". The end-of-beta screen on the watch shows the UID too.
  • After the beta without a code: an end-of-beta screen with the UID replaces the app. Enter the code, then open it again. New watch? Write to us and the code moves for free.

Privacy and permissions

Permissions:

  • Activity recording: saves the session to Garmin Connect.
  • Extra FIT fields: adds the app's values to the saved activity.
  • Sensors: heart rate from the watch.
  • SensorHistory: watch temperature sensor, if enabled.
  • Positioning: one GPS fix at the start, if Record location is On.

No internet use. Data stays on the watch and in the activities you save.

Troubleshooting

The code does not work. Check that the UID you bought for matches "Watch UID (needed to buy a code)" and type all 8 characters (case is ignored, no 0, O, 1 or I). A code for another app does not fit. Sync, then reopen.

What does the temperature rule do? Target seconds = 60 times the water temperature in °C, from 30 s to 5:00.

What happens at the target? The ring turns red and the watch buzzes. It is a reminder, not a safe time.

I closed the app mid-session. It saves the session itself.

Contact

kontakt@dialforge.dev or dialforge.dev. Please write before leaving a low rating.

Permissions and privacy

This product asks the watch for the permissions below. Connect IQ shows them when you install it.

  • Activity recording: Saves your workout in Garmin Connect (the activity from this app). The data stays in your Garmin account.
  • Own data fields in the activity: Adds this app's own numbers (for example points or sets) to the saved activity.
  • Heart rate and sensors: Reads heart rate and other sensors of the watch while the app runs.
  • Sensor history: Reads recent values stored by the watch (for example Body Battery, stress, heart rate, steps trend).
  • Location (GPS): Uses the watch location for distance, speed or sun and moon times. The location is not sent anywhere.

This product does not use the internet and sends no data to our servers.

Compatible watches

51mm, D2 Air X15, D2 Mach 1 Pro, Enduro 2, Enduro 3, epix (Gen 2), epix Pro (Gen 2) 42mm, epix Pro (Gen 2) 47mm, epix Pro (Gen 2) 51mm, Forerunner 165, Forerunner 165 Music, Forerunner 245, Forerunner 245 Music, Forerunner 255, Forerunner 255 Music, Forerunner 255s, Forerunner 255s Music, Forerunner 265, Forerunner 265s, Forerunner 55, Forerunner 570 42mm, Forerunner 570 47mm, Forerunner 965, Forerunner 970, fēnix 7, fēnix 7 Pro, fēnix 7 Pro - Solar Edition (no Wi-Fi), fēnix 7S, fēnix 7S Pro, fēnix 7X, fēnix 7X Pro, fēnix 7X Pro - Solar Edition (no Wi-Fi), fēnix 8 43mm, fēnix 8 47mm, fēnix 8 Pro 47mm, fēnix 8 Solar 47mm, fēnix 8 Solar 51mm, fēnix E, Instinct 3 AMOLED 45mm, Instinct 3 AMOLED 50mm, Instinct Crossover AMOLED, MicroLED, quatix 7, quatix 7 Pro, quatix 7 Sapphire, quatix 7X Solar, quatix 8 47mm, quatix 8 Pro 47mm, tactix 7, tactix 7 – AMOLED Edition, tactix 8 47mm, tactix 8 Solar 51mm, Venu 2, Venu 2 Plus, Venu 2S, Venu 3, Venu 3S, Venu 4 41mm, Venu 4 45mm, Venu Sq 2, Venu Sq 2 Music, Venu X1, vívoactive 4, vívoactive 4S, vívoactive 5, vívoactive 6

Screenshots

FAQ

What happens after the 30-day beta?

The app shows a screen asking for a one-time unlock code from dialforge.dev instead of opening normally. Buy the code once below, no subscription.

Does the app send my data to Dialforge?

No. The app works fully offline, and the unlock code is checked on the watch itself, without contacting any server.

The app does not work as described on my watch. Can I get a refund?

Yes. Write through the feedback form below, or to the e-mail in the footer. If we cannot fix it, we refund you, as described in the terms.

Changing your watch?

Write to me and I will move your code for free.

Changelog

Unlock

€5.99

One-time payment. No subscription. The code works on the watch whose UID you enter.

  1. Install the app from the Connect IQ store. It works fully and for free for the first 30 days.
  2. Find your 10-digit UID: Connect IQ app on the phone > My Device > Apps or Data Fields > this app > Settings > Watch UID.
  3. Enter UID and e-mail, pay with PayPal (cards work without a PayPal account). The code appears here at once.
  4. Type the code into the same settings page, field "Unlock code". The watch checks it offline.

Tell us how to make it better

Missing a data field, a colour, a layout? Found a bug on your watch model? Write it here. We read every message and ship improvements in updates.