# Protocol Zero vs DeepSleep

The clearest difference is monetization model: DeepSleep at freemium against Protocol Zero's subscription. DeepSleep also leads on ads (none vs shown) and rating (5.0 vs 4.7). Protocol Zero's advantage is ratings volume (182 vs 1). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Protocol Zero sells 5 in-app purchases, starting at $12.99 per month and DeepSleep sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

DeepSleep holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Protocol Zero has 182 ratings behind it against 1, so its average is the more settled of the two.

Protocol Zero ships an update every 4 days, DeepSleep every 5 days. Both last shipped on October 1, 2026.

## The numbers

| Metric | Protocol Zero | DeepSleep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (182 ratings)](https://appshunter.io/ios/app/protocol-zero-sleep-sounds/id6755014746/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/deepsleep-sleep-tracker/id6756809695/reviews)** |
| Number of ratings | **182** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Subscription | **Freemium** |
| Size | 123 MB | 104 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [HumanOS LLC](https://appshunter.io/developer/1851339721) | [Muhammad Umer Shah](https://appshunter.io/developer/1840603663) |

## What reviewers say

### 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 |


### DeepSleep

[App page](https://appshunter.io/ios/app/deepsleep-sleep-tracker/id6756809695)

This app offers a science-inspired approach to improving sleep quality. It combines soothing sounds, guided meditations, and bedtime stories with intelligent sleep tracking to help users fall asleep faster, sleep deeper, and wake up refreshed.

**Highlights:** Calming sleep sounds and ambient audio, Guided meditation sessions for relaxation, Soothing bedtime stories for adults, Intelligent sleep cycle tracking and insights, Nightly routine building with reminders, Progress tracking with streaks and goals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deep Sleep Premium Monthly | $8.99 | per month |
| Yearly Pro | $39.99 | per year |


## Frequently asked questions

### Is Protocol Zero free?

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

### Is DeepSleep free?

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

### Which has better reviews, Protocol Zero or DeepSleep?

DeepSleep is rated higher. Protocol Zero averages 4.7 out of 5 from 182 ratings, while DeepSleep averages 5.0 from 1 ratings.

### Do Protocol Zero or DeepSleep have ads?

Protocol Zero shows ads; DeepSleep does not.

### Which is updated more often, Protocol Zero or DeepSleep?

Protocol Zero ships an update every 4 days, and DeepSleep every 5 days. Most recently, Protocol Zero was updated on October 1, 2026 and DeepSleep 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.*