# Zero vs Degree Daddy

The clearest difference is in-app purchases: Degree Daddy at none against Zero's 2. Degree Daddy also leads on ads (none vs shown) and device support (3 vs 1). Zero's advantage is update cadence (every 6 days vs fortnightly). On price and iOS requirement there is nothing between them.

Both are free to download. Zero sells 2 in-app purchases, starting at $9.99 per month. Degree Daddy asks for nothing beyond the download.

Zero ships an update every 6 days, Degree Daddy fortnightly. The most recent releases landed on October 4, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Zero | Degree Daddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/degree-daddy/id6759690992/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | — | Free |
| Size | 26 MB | 11 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 17+ |
| Developer | [WWW.UNICOSE.COM](https://appshunter.io/developer/367322767) | [Outergy Group, LLC](https://appshunter.io/developer/1880228743) |

## What reviewers say

### Zero

[App page](https://appshunter.io/ios/app/zero-cold-plunge/id6758989393)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zero PRO Monthly | $9.99 | per month |
| Zero PRO Yearly | $69.99 | per year |


### Degree Daddy

[App page](https://appshunter.io/ios/app/degree-daddy/id6759690992)

Track your cold plunge and sauna sessions with a dedicated timer and logging system. Build streaks, sync your data to Strava and Apple Health, and share your progress with session cards. Designed for serious recovery enthusiasts.

**Highlights:** Cold plunge and sauna timer, Temperature and rating logging, Streak tracking with recovery, Strava and Apple Health sync, Apple Watch app, Shareable session cards, iCloud sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Zero free?

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

### Is Degree Daddy free?

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

### Do Zero or Degree Daddy have ads?

Zero shows ads; Degree Daddy does not.

### Which is updated more often, Zero or Degree Daddy?

Zero ships an update every 6 days, and Degree Daddy fortnightly. Most recently, Zero was updated on October 4, 2026 and Degree Daddy on October 20, 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.*