Comparison

121 Health vs Longevity Deck

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

121 Health

This platform analyzes your wearable data using AI to provide personalized longevity plans and health insights. It offers detailed biometric tracking, daily readiness scores, and weekly longevity scores based on extensive scientific research.

Highlights
  • Personalized longevity plans
  • 100+ longevity-based metrics
  • Real-time data computation
  • Daily sleep, activity, and readiness scores
  • Weekly longevity score
  • AI-powered biometric chat
Features
Read full description

Every wonder what to do with your Apple Watch or other fitness wearable data? Well, AI seems to be in the news everywhere... Sounds like a perfect match! Introducing 121 Health: a next generation longevity health analysis and preventive medicine platform. Here are some core features: JOURNEYS: Unlock personalized longevity plans, starting with Optimal Water, a journey which helps you uncover your optimal water intake for your health. LONGEVITY-BIOMETRICS: Unlock 100+ longevity-based metrics. Our servers perform continuous, real-time computations find deep connections in your existing health data, which is crucial for optimizing your longevity. DAILY AND WEEKLY INSIGHTS: Start your day with sleep, activity, and readiness scores. Each week, gain a longevity score based on 30+ biometrics. CHAT: Chat with 121 to explore your biometrics. Answers cross-reference your data with over 100,000 of the top papers in longevity science. Worrying about sharing your data? Fear not! Your data is completely anonymized before it touches our servers. It's not linked to you at all. Excited? Let's dive in. Get access to your first longevity insights now. By using 121 Health, you agree to the following: Privacy Policy: 121health.app/privacy. TOS: 121health.app/terms. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Longevity Deck

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
Read full description

Create your personal longevity deck. Track 160+ science backed protocols including sauna, cold plunge, red light therapy, supplements, sleep optimization, and recovery on a visual timeline. STAY CURRENT WITHOUT THE NOISE Every protocol auto updates twice monthly. LongevityDeck scans new research, health podcasts, and expert recommendations from Andrew Huberman, Rhonda Patrick, Tim Ferriss, and leading longevity scientists so you don't waste hours filtering noise. Get the latest on biohacking, anti aging, hormone optimization, and wellness trends automatically. YOUR PRIVACY FIRST HEALTH STACK • No accounts required. No tracking. No data collection. • Optional Apple HealthKit integration for personalized insights on how protocols affect your metrics • 100% free. No paywalls. No subscription. No hidden costs. BUILT BY A BIOHACKER FOR Longevity enthusiasts, biohackers, health conscious professionals, wellness followers, and fans of Huberman Lab, Found My Fitness, Lifespan, and Bryan Johnson. HOW IT WORKS 1. Choose from 125+ curated protocols across recovery, nutrition, supplements, sleep, fitness, cognitive enhancement, and lifestyle optimization 2. Swipe to build your personal protocol deck and stack 3. Get automatic updates when recommendations change based on new research 4. Optional: Join community discussions, read user experiences, and share your longevity stack QUICKLY FIND • Protocols by expert name, benefit, or topic including sleep, focus, recovery, stress reduction, and anti aging • Trending biohacking methods, devices, peptides, and supplements • Source links to original podcasts, papers, and video content SHARE YOUR STACK • Personalized web link to share your full longevity routine • Share individual protocol cards with custom photos HOME SCREEN WIDGET Monitor HRV, resting heart rate, sleep quality, and body fat percentage with color coded weekly trend indicators. Stay motivated without opening the app. IMPORTANT: This app is for informational and educational purposes only. Always consult with your doctor or qualified healthcare provider before making any medical decisions or changes to your health routine.

Screenshots

121 Health4 screens
Longevity Deck4 screens

Verdict

The call

The clearest difference is in-app purchases: Longevity Deck at none against 121 Health's 2. 121 Health's advantage is ratings volume (73 vs 10) and review sentiment (91% vs 80%). On price, rating, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 121 Health sells 2 in-app purchases, starting at $10.00 per month. Longevity Deck asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for 121 Health against 4.8 for Longevity Deck. That said, the two scores are not equally well evidenced: 121 Health has 73 ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 91% of 121 Health's written reviews are positive against 80% of Longevity Deck's.

UpkeepUpdate frequency

121 Health ships an update every 3 days, Longevity Deck every 4 days. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
121 Health versus Longevity Deck: the parameters behind the verdict, then further details
Parameter121 HealthLongevity Deck
PriceFreeFree
Rating4.8 (73 ratings)4.8 (10 ratings) — better
Positive reviews90.7% of reviews — better80.0% of reviews
Number of ratings73 — better10
Update frequencyEvery 3 days — betterEvery 4 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better18.5
Further details — not scored
Size131 MB78 MB
Age rating17+17+
Developer121Health LLCHYPE4MOBILE MALEWICZ I WSPOLNICY SPOŁKA JAWNA

Customer experience

121 Health

All ratings73 ratings
Positive94.5%
Neutral0.0%
Negative5.5%
Written reviews43 reviews
Positive90.7%
Neutral2.3%
Negative7.0%

Longevity Deck

All ratings10 ratings
Positive90.0%
Neutral10.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

Bugs and requests

121 Health

Reported bugs

6 issues
  • Cannot log in after latest update
  • App opens but cannot get past sign-in page
  • Blank pages after update
  • Sign-in loop after update
  • App tends to crash
Show 1 more
  • Longevity score seems bugged

Requested features

5 requests
  • Add widgets for Home Screen
  • More social features
  • More journeys
  • More chat features beyond text
  • More insight into longevity score calculation

Longevity Deck

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

121 Health

Subscriptions2
  • Pro (Monthly)7 Days trial$10.001 Month
  • Pro (Yearly)7 Days trial$100.001 Year
None

Longevity Deck

No in-app purchases

Questions

Is 121 Health free?
121 Health 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, 121 Health or Longevity Deck?
Longevity Deck is rated higher. 121 Health averages 4.8 out of 5 from 73 ratings, while Longevity Deck averages 4.8 from 10 ratings.
Do 121 Health or Longevity Deck have ads?
Neither 121 Health nor Longevity Deck shows ads.
Which is updated more often, 121 Health or Longevity Deck?
121 Health ships an update every 3 days, and Longevity Deck every 4 days. Most recently, 121 Health was updated on October 19, 2026 and Longevity Deck on October 13, 2026.

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