# Protocol Zero vs Longevity AI App

The clearest difference is monetization model: Longevity AI App at free with in-app purchases against Protocol Zero's subscription. Longevity AI App also leads on ads (none vs shown) and device support (3 vs 1). Protocol Zero's advantage is ratings volume (182 vs 2) and rating (4.7 vs 4.5). On price 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 Longevity AI App sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Protocol Zero holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Protocol Zero has 182 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | Protocol Zero | Longevity AI App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (182 ratings)](https://appshunter.io/ios/app/protocol-zero-sleep-sounds/id6755014746/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/longevity-ai-app/id6759949619/reviews) |
| Number of ratings | **182** | 2 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 123 MB | 89 MB |
| Requires iOS | 17.2 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [HumanOS LLC](https://appshunter.io/developer/1851339721) | [Aziz Gundogdu](https://appshunter.io/developer/1758063290) |

## 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 |


### Longevity AI App

[App page](https://appshunter.io/ios/app/longevity-ai-app/id6759949619)

Understand how your lifestyle impacts your biological aging. This app analyzes sleep, stress, metabolism, and habits to estimate your Bio Age and aging speed, offering personalized insights and routines to promote long-term health.

**Highlights:** Longevity assessment, Bio Age estimation, Aging speed analysis, Personalized insights, Daily routine guidance, Metabolic health tracking, Sleep optimization

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Longevity (Weekly) | $5.99 | per 7 days |
| Longevity (Yearly) | $39.99 | per year |


## Frequently asked questions

### Is Protocol Zero free?

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

### Is Longevity AI App free?

Longevity AI App is free to download, with in-app purchases available.

### Which has better reviews, Protocol Zero or Longevity AI App?

Protocol Zero is rated higher. Protocol Zero averages 4.7 out of 5 from 182 ratings, while Longevity AI App averages 4.5 from 2 ratings.

### Do Protocol Zero or Longevity AI App have ads?

Protocol Zero shows ads; Longevity AI App does not.

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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.*