# The Breath SOURCE vs Protocol Zero

The clearest difference is monetization model: The Breath SOURCE at free with in-app purchases against Protocol Zero's subscription. The Breath SOURCE also leads on ads (none vs shown) and review sentiment (89% vs 67%). Protocol Zero's advantage is update cadence (every 4 days vs fortnightly). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. The Breath SOURCE sells 6 in-app purchases, starting at $1.99 per 7 days and Protocol Zero sells 5 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for The Breath SOURCE against 4.7 for Protocol Zero. Both are backed by a comparable volume of ratings — 120 and 182 respectively. Written reviews are what separate them: 89% of The Breath SOURCE's written reviews are positive against 67% of Protocol Zero's.

The Breath SOURCE ships an update fortnightly, Protocol Zero every 4 days. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | The Breath SOURCE | Protocol Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (120 ratings)](https://appshunter.io/ios/app/the-breath-source-breathwork/id6444403944/reviews)** | [4.7 (182 ratings)](https://appshunter.io/ios/app/protocol-zero-sleep-sounds/id6755014746/reviews) |
| Number of ratings | 120 | **182** |
| Positive reviews | **89.2% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 102 MB | 123 MB |
| Requires iOS | **15.1** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [The Breath Source LLC](https://appshunter.io/developer/1654472152) | [HumanOS LLC](https://appshunter.io/developer/1851339721) |

## What reviewers say

### The Breath SOURCE

[App page](https://appshunter.io/ios/app/the-breath-source-breathwork/id6444403944)

Explore diverse breathwork techniques guided by world-renowned masters. Reduce stress, improve sleep, and enhance focus with science-backed and spiritual practices. Access live classes and structured programs tailored to your wellness goals.

**Highlights:** Guided breathwork sessions, 60+ styles of breathwork, Learn from world-renowned teachers, Programs for specific goals, Live breathwork classes, Breathwork by duration

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Breath Source Weekly | $1.99 | per 7 days |
| Monthly Subscription | $8.79 | per month |
| Monthly Subscription | $11.00 | per month |
| Yearly Subscription (Discount) | $52.99 | per year |
| Yearly Subscription | $55.99 | per year |
| Yearly Subscription | $69.99 | per year |

**What reviewers like**

- 🌟 Diverse roster of expert breathwork teachers and masters
- 👍 User-friendly and intuitive interface design
- 🎯 Wide variety of breathing techniques and styles
- ⏱️ Flexible session lengths for different schedules
- 🧘 Effective for stress relief and anxiety management

**What reviewers complain about**

- 💰 Expensive subscription pricing ($100/year mentioned)
- 🐛 Technical glitches and app crashes
- 🔍 Lack of search functionality
- 📱 Orientation issues when phone turned horizontally
- 👥 Limited diversity in instructor representation

**Reported bugs**

- App crashes when clicking multiple items
- Videos stop playing after 15 seconds
- Horizontal orientation causes app to close
- Login issues and account creation problems
- Admin blocked account errors

**Requested features**

- Search functionality to find specific sessions
- Bookmark and favorites system for saving content
- Watch history and last watched tracking
- User feedback mechanism for teachers
- Community forum for discussions and questions


### Protocol Zero

[App page](https://appshunter.io/ios/app/protocol-zero-sleep-sounds/id6755014746)

This app provides a personalized daily plan to improve sleep quality, incorporating science-backed techniques and sleep sounds. It guides users through setting consistent wake times, managing caffeine intake, and activating wind-down routines for better rest.

**Highlights:** Personalized daily sleep plan, Sleep sounds (white noise, rain), Consistent wake time guidance, Caffeine cutoff reminders, Wind-down mode, CBT-I techniques

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protocol Zero Monthly | $12.99 | per month |
| Protocol Zero Annual Starter | $19.99 | per year |
| Protocol Zero Annual | $29.99 | per year |
| Protocol Zero Pro | $39.99 | per year |
| Protocol Zero Pro | $59.99 | per year |


## Frequently asked questions

### Is The Breath SOURCE free?

The Breath SOURCE is free to download, with in-app purchases available.

### Is Protocol Zero free?

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

### Which has better reviews, The Breath SOURCE or Protocol Zero?

The Breath SOURCE is rated higher. The Breath SOURCE averages 4.8 out of 5 from 120 ratings, while Protocol Zero averages 4.7 from 182 ratings.

### Do The Breath SOURCE or Protocol Zero have ads?

Protocol Zero shows ads; The Breath SOURCE does not.

### Which is updated more often, The Breath SOURCE or Protocol Zero?

The Breath SOURCE ships an update fortnightly, and Protocol Zero every 4 days. Most recently, The Breath SOURCE was updated on October 15, 2026 and Protocol Zero on October 1, 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.*