# HotCold vs SaunaFlow

The clearest difference is in-app purchases: HotCold at none against SaunaFlow's 1. SaunaFlow's advantage is update cadence (fortnightly vs every 10 months) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. SaunaFlow sells 1 one-off in-app purchase. HotCold asks for nothing beyond the download.

HotCold ships an update every 10 months, SaunaFlow fortnightly. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HotCold | SaunaFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/hotcold/id1559387097/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 17 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Gil Padro](https://appshunter.io/developer/570632312) | [YANGLI CHEN](https://appshunter.io/developer/1886058795) |

## What reviewers say

### HotCold

[App page](https://appshunter.io/ios/app/hotcold/id1559387097)

This app assists with contrast bath therapy by providing a customizable timer. It also includes informational articles to help users understand the process and its variations. Always consult a doctor before starting any new treatment.

**Highlights:** Customizable timer for contrast bath therapy, Informational articles on CBT, Assists with recovery from injuries, Supports understanding of CBT variations

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### SaunaFlow

[App page](https://appshunter.io/ios/app/saunaflow-sauna-and-cold-timer/id6761906547)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SaunaFlow Premium | $4.99 | one-time |


## Frequently asked questions

### Is HotCold free?

HotCold is free to download, with no in-app purchases.

### Is SaunaFlow free?

SaunaFlow is free to download, with in-app purchases available.

### Do HotCold or SaunaFlow have ads?

Neither HotCold nor SaunaFlow shows ads.

### Which is updated more often, HotCold or SaunaFlow?

HotCold ships an update every 10 months, and SaunaFlow fortnightly. Most recently, HotCold was updated on October 20, 2026 and SaunaFlow on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*