# Clarity vs Longevity Deck

The clearest difference is in-app purchases: Longevity Deck at none against Clarity's 2. Longevity Deck also leads on update cadence (every 4 days vs every 2 weeks) and ratings volume (10 vs 2). Clarity's advantage is review sentiment (100% vs 80%) and rating (5.0 vs 4.8). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Clarity sells 2 in-app purchases, starting at $2.99 per month. Longevity Deck asks for nothing beyond the download.

Clarity holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Longevity Deck has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Clarity's written reviews are positive against 80% of Longevity Deck's.

Clarity ships an update every 2 weeks, Longevity Deck every 4 days. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Clarity | Longevity Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/clarity-caffeine-tracker/id6748916921/reviews)** | [4.8 (10 ratings)](https://appshunter.io/ios/app/longevity-deck/id6753670965/reviews) |
| Number of ratings | 2 | **10** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Freemium | **Free** |
| Size | 25 MB | 78 MB |
| Requires iOS | **18.0** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Nexus Nexus](https://appshunter.io/developer/1826114678) | [HYPE4MOBILE MALEWICZ I WSPOLNICY SPOŁKA JAWNA](https://appshunter.io/developer/501938616) |

## What reviewers say

### Clarity

[App page](https://appshunter.io/ios/app/clarity-caffeine-tracker/id6748916921)

This app helps you understand the impact of caffeine on your sleep, energy, and focus. Log your intake quickly and visualize how caffeine's half-life affects your daily cycles and nighttime rest.

**Highlights:** Fast caffeine logging, Caffeine half-life tracking, Sleep and recovery insights, Focus and energy analysis, Daily and weekly insights

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clarity Plus - Monthly | $2.99 | per month |
| Clarity Plus - Yearly | $19.99 | per year |


### Longevity Deck

[App page](https://appshunter.io/ios/app/longevity-deck/id6753670965)

Track over 125 science-backed health protocols, from sauna and cold plunge to sleep optimization and supplements. Get automatic updates based on the latest research and expert recommendations. Prioritizes user privacy with no account or data collection required.

**Highlights:** Track 125+ science-backed protocols, Automatic research updates, Visual timeline tracking, Privacy-focused, no account needed, Optional Apple HealthKit integration, Home screen widgets for key metrics

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

**In-app purchases:** none


## Frequently asked questions

### Is Clarity free?

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

### Is Longevity Deck free?

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

### Which has better reviews, Clarity or Longevity Deck?

Clarity is rated higher. Clarity averages 5.0 out of 5 from 2 ratings, while Longevity Deck averages 4.8 from 10 ratings.

### Do Clarity or Longevity Deck have ads?

Neither Clarity nor Longevity Deck shows ads.

### Which is updated more often, Clarity or Longevity Deck?

Clarity ships an update every 2 weeks, and Longevity Deck every 4 days. Most recently, Clarity was updated on October 16, 2026 and Longevity Deck on October 13, 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.*