B2C · cold plunge and sauna tracker

How Go Polar grows

3 tactics from 1 interview.

Go Polar is an app for tracking cold plunges, saunas and cold showers with an Apple Watch or iPhone, built by a founder who wanted it for himself. It was the first app in his studio, The Wellness Company, which grew by launching more apps for the same health audience and promoting each one to existing users.

The founder built Go Polar after finding no good App Store app for tracking niche habits like cold plunges, and he reported a portfolio free-to-paid rate of about 8%, which he credits to the niche focus.Go Polar
The Wellness Company markets each new app to users of its others; the founder said many Go Polar users also use SunSeek and Posture AI, and that three apps reached about $120K a year combined.The Wellness Company
He set up the studio because he did not know which app would win, launching Go Polar, then SunSeek, then Posture AI, and said SunSeek was better built on day one thanks to the practice.The Wellness Company

Summary written 2026-10-09 from the tactics below. Figures are as founders stated them.

About Go Polar

What it is: Tracks cold plunge, cold shower and sauna sessions with Apple Watch or iPhone, including heart rate and water temperature
Who it's for: People who cold plunge and use saunas
Business model: Subscription app
Launched: 2025
Funding: bootstrapped
Outcome: First app; one of the studio's main apps

As described in the interviews, not independently verified.

Go Polar's 3 tactics

The Wellness Company · B2C · studio of health apps

Build several small apps for the same health crowd and promote each new one to existing users

Users overlap across apps; three apps reached ~$120K a year combined

Every app targets the same health and wellness audience (cold plunge and sauna tracking, morning light, posture, and next a health data aggregator). Many Go Polar users also use SunSeek and Posture AI. When a new app launches, it is marketed to existing users of the other apps, so there is no need to build a new audience or list, and the marketing isn't cold.

Workedportfolioupsell-expansion

Starter Story · 2025-12-04

Go Polar · B2C · cold plunge and sauna tracker

Build an app to track a niche habit you do, like cold plunges, when none exists

Became one of the studio's main apps; ~8% free-to-paid, which he credits to niche focus

Presh liked tracking his activities against wearable metrics. Searching the App Store, he found no good app to track niche activities like cold plunges, saunas and cold showers, so he built Go Polar to track them with Apple Watch or iPhone (heart rate trend, water temperature). He argues that feeling the pain yourself means you build a better product than competitors and care enough to add the extra details.

Workedpositioning-nichevalidation

Starter Story · 2025-12-04

The Wellness Company · B2C · studio of health apps

Ship app after app in one studio, treating each launch as practice for the next

Second app was better built on day one than the first; no numbers

Set up The Wellness Company as a product studio because he didn't know which app would win. Launched Go Polar, then SunSeek, then Posture AI, treating each app as another repetition of building product. SunSeek was crafted better than Go Polar on day one because of the reps.

Workedportfoliofeature-development

Starter Story · 2025-12-04

Topics

Running a portfolio of apps2 Picking a niche and positioning an app2 Upsells and expansion revenue1 Validating an app idea before building1

Interviews

I make $120K/year from 3 mobile apps (The Wellness.Company Breakdown) · Starter Story · 2025-12-04