# Plunge Timer vs ColdLog

The clearest difference is in-app purchases: Plunge Timer at none against ColdLog's 1. Plunge Timer also leads on iOS requirement (13.0 vs 17.0). ColdLog's advantage is update cadence (weekly vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. ColdLog sells 1 in-app purchase, starting at $8.99 per year. Plunge Timer asks for nothing beyond the download.

Plunge Timer ships an update fortnightly, ColdLog weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Plunge Timer | ColdLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/coldlog/id6755875822/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Freemium |
| Size | 2 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Thomas WENTWORTH](https://appshunter.io/developer/1824012490) | [JRSW s.r.o.](https://appshunter.io/developer/1856840734) |

## What reviewers say

### Plunge Timer

[App page](https://appshunter.io/ios/app/plunge-timer/id6748648059)

**In-app purchases:** none


### ColdLog

[App page](https://appshunter.io/ios/app/coldlog/id6755875822)

Effortlessly track your cold plunge and ice bath sessions with this app. It automatically captures data like water temperature, duration, and heart rate directly from your Apple Watch, offering detailed insights and scientifically accurate calorie calculations.

**Highlights:** One-tap workout start on Apple Watch, Automatic Water Lock activation, Comprehensive data collection (temp, duration, HR), Scientifically accurate calorie calculation, Session photo gallery, Customizable share cards, HealthKit integration

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ColdLog PRO | $8.99 | per year |


## Frequently asked questions

### Is Plunge Timer free?

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

### Is ColdLog free?

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

### Do Plunge Timer or ColdLog have ads?

Neither Plunge Timer nor ColdLog shows ads.

### Which is updated more often, Plunge Timer or ColdLog?

Plunge Timer ships an update fortnightly, and ColdLog weekly. Most recently, Plunge Timer was updated on October 30, 2026 and ColdLog on October 30, 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.*