HotLog - Sauna & Cold Plunge

HotLog - Sauna & Cold Plunge

Log Sauna & Infrared Sessions

518 ratings
57 reviews
$1.99

Details

  • Released
  • Updated
  • December 1, 2018
  • June 4, 2026

Features

HotLog - Sauna & Cold Plunge screenshot #1 for iPhone
HotLog - Sauna & Cold Plunge screenshot #2 for iPhone
HotLog - Sauna & Cold Plunge screenshot #3 for iPhone
HotLog - Sauna & Cold Plunge screenshot #4 for iPhone
HotLog - Sauna & Cold Plunge screenshot #5 for iPhone
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About

This app helps you meticulously track your sauna, steam bath, and infrared room sessions. Record details like temperature, humidity, duration, and even the type of aufguss. Gain insights into your habits with appealing statistics and optionally sync your sessions with Apple Health.

Track sauna, steam, infrared sessions
Log temperature and humidity
Record session duration
Note aufguss and cold showers
View session statistics
Sync with Apple Health
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What users say

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What's New in HotLog

1.7

June 4, 2026

Custom Sauna Types You can now create your own sauna types and track sessions your way. Add favorites like Biosauna, Crystal Sauna, or any custom sauna experience.

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User reviews

Just a log

If you just want to manually enter on the data from your sauna session this app is for you. That wasn’t what I was looking for.
No stop watch or timer built in to the app so you have to time your session in other ways then figure out/ remember your start time to log it. No cold plunge option.

Pretty good but room for improvement

Would love to see a timer feature to start a session at anytime and support with Bluetooth devices to automatically track heart rate like from earbuds.

Response from developer

A start/stop session timer and Bluetooth-based heart rate tracking are both great ideas & we’ve noted them down. We really appreciate you taking the time and helping shape HotLog! 🔥

Good easy app

Very easy to use & nothing like it

Could use some improvements

I appreciate the polished interface and the ability to track my time in sauna as workouts that are stored in Apple health. However, why can I not choose a humidity over 40% for a Sauna? I have a traditional steam sauna and cannot choose above 40%?? I’d love to see the ability to save presets for time, temp, and humidity!
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Response from developer

Thanks for the thoughtful feedback! 🔥 We’re really happy you’re enjoying the interface and Apple Health integration. Since your review, HotLog has evolved quite a bit. You can set humidity all the way up to 100%, making it a much better fit for steam saunas as well.

Just what I needed

This app is essentially perfect for its stated purpose… Just simply tracking my sauna use: time, temperature. No unnecessary frills.

Response from developer

Thanks so much for the kind words! We’re really happy to hear HotLog is exactly what you were looking for. 🔥

Developer apps

User experience

🐞

Reported Bugs

6 issues

Apple Health syncing fails for some users

Bug

Data not migrating to new devices properly

Bug

Temperature field doesn't support ice bath temperatures below 30°C

Bug

Humidity field limited to maximum 40%

Bug

App crashes or won't launch for some users

Bug

CSV export functionality unreliable

Bug

Requested Features

13 requests

Apple Watch app with timer functionality

Feature

Built-in countdown timer for sessions

Feature

Weekly, monthly, and yearly statistics views

Feature

Heart rate monitoring and integration

Feature

Preset saving for temperature, time, and humidity

Feature

Automatic session tracking (start/stop button)

Feature

Cold plunge duration tracking (not just toggle)

Feature

Calorie calculation based on biometric data

Feature

Scent/fragrance logging for sauna sessions

Feature

Multi-user tracking and easy sharing

Feature

Expanded temperature range for ice baths

Feature

Humidity settings above 40%

Feature

Mindfulness/meditation time sync instead of workout minutes

Feature

FAQ

What does HotLog do?

HotLog is a digital companion designed to help you track your sauna, steam bath, and infrared room sessions. It allows you to record key details of each session, providing insights into your habits and potentially syncing with Apple Health.

What details can I log for each session?

You can log various important details for each session, including the type of room (sauna, steam, infrared), temperature, humidity, duration, whether an aufguss was performed, and if you took a cold shower or plunge afterward.

Is HotLog free to use?

Yes, based on the provided information, HotLog is a free application. It does not appear to have any associated costs for downloading or using its core features.

Can this app track my sauna sessions as workouts?

Yes, if you choose to enable this feature, HotLog can track all your logged sauna sessions as workouts within Apple Health. This allows you to integrate your sauna habits into your overall fitness tracking.

Who would benefit from using this app?

This app is ideal for anyone who frequently visits saunas, steam baths, or infrared rooms and wants to monitor their usage. It's beneficial for those interested in the relaxation and potential health benefits of these practices and wish to understand their habits better.