# Days vs Longevity.AI

The clearest difference is in-app purchases: Longevity.AI at none against Days's 1. Longevity.AI also leads on iOS requirement (15.1 vs 17.0). Days's advantage is update cadence (every 2 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Days sells 1 in-app purchase, starting at $1.99 per month. Longevity.AI asks for nothing beyond the download.

Days ships an update every 2 days, Longevity.AI every 2 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Days | Longevity.AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/longevityai/id6762496553/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | — | Subscription |
| Size | 10 MB | 29 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [IBRAHIM HADDAD](https://appshunter.io/developer/1858706680) | [Myles Stute](https://appshunter.io/developer/1894389735) |

## What reviewers say

### Days

[App page](https://appshunter.io/ios/app/days-live-longer/id6758021283)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Days PRO | $1.99 | per month |


### Longevity.AI

[App page](https://appshunter.io/ios/app/longevityai/id6762496553)

This platform offers a comprehensive longevity toolkit, featuring an AI advisor, dose calculator, and an extensive library of compounds backed by scientific research. Track your progress with wellness scores, daily check-ins, and body composition analysis, all while syncing with Apple Health.

**Highlights:** AI Advisor for compound and protocol queries, Precision dose calculator, 100-compound library with PubMed citations, Wellness score and adherence analytics, Body composition and daily tracking, Apple Health integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Days free?

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

### Is Longevity.AI free?

Longevity.AI is free to download, with no in-app purchases.

### Do Days or Longevity.AI have ads?

Neither Days nor Longevity.AI shows ads.

### Which is updated more often, Days or Longevity.AI?

Days ships an update every 2 days, and Longevity.AI every 2 months. Most recently, Days was updated on October 24, 2026 and Longevity.AI on October 31, 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.*