Comparison

Zenther 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

Zenther

Intelligently track workouts, nutrition, and progress with personalized insights. This app prioritizes your privacy by processing all data on your device, offering a secure and user-friendly fitness companion.

Highlights
  • AI-powered fitness tracking
  • Private on-device data processing
  • Workout and nutrition logging
  • Personalized daily targets
  • Streak tracking and achievements
  • Home and lock screen widgets
  • Apple Health and Watch integration
Features
Read full description

**Your fitness journey, intelligently tracked and completely private.** Zenther helps you understand your workouts, nutrition, and progress with smart insights - all while keeping your data secure on your device. **COMPLETE FITNESS TRACKING** Sleep quality tracking with personalized recommendations. Daily steps and activity monitoring. Workout streak tracking with milestone celebrations. **NUTRITION MADE SIMPLE** Easy food logging with photo, voice, or manual entry. Smart macro tracking based on your fitness goals. Calorie balance tracking for weight management. Personalized daily targets that adapt to your activity. Progress tracking for weight loss, gain, or maintenance. **MOTIVATION THAT WORKS** Streak tracking with visual progress indicators. Personal record detection and achievements. Smart insights about your workout patterns. Contextual motivation based on your actual progress. Gentle reminders that respect your schedule. **BEAUTIFUL WIDGETS** 8 different widgets for quick access to your stats. Live workout data on your home screen and lock screen. Privacy-protected as the data is hidden when your phone is locked. Beautiful design that complements iOS. **YOUR DATA STAYS YOURS** Everything processed on your device and nothing sent to servers. No account required, no data collection. Full transparency about what we access. You control all permissions. **WORKS WITH YOUR APPLE DEVICES** It directly integrates with Apple Health and Apple Watch. Siri shortcuts for quick progress checks. Automatic sync across all your devices. Native iOS design that feels right at home. **FOR EVERYONE** Whether you are just starting out or training seriously, Zenther adapts to your level. Beginner-friendly with helpful guidance. Advanced analytics for serious athletes. Flexible goals that match your lifestyle. No judgment, just helpful insights like a partner. **SMART INSIGHTS** Instead of overwhelming you with data, Zenther highlights what matters. When you perform best during the week. Whether you are on track with your nutrition goals. Simple suggestions to improve your consistency. Download Zenther today and start your journey toward optimal health and fitness! Terms of Use: 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

Zenther3 screens
Longevity Deck4 screens

Verdict

The call

The clearest difference is rating: Longevity Deck at 4.8 against Zenther's 3.7. Longevity Deck also leads on in-app purchases (none vs 4) and ratings volume (10 vs 3). On price, update cadence, ads and device support 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. Zenther sells 4 in-app purchases, starting at $1.59 per 7 days. Longevity Deck asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Longevity Deck holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 3 and 10 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on June 25, 2026 and September 27, 2026 respectively.

Scorecard5 real differences · 5 level
Zenther versus Longevity Deck: the parameters behind the verdict, then further details
ParameterZentherLongevity Deck
PriceFreeFree
Rating3.7 (3 ratings)4.8 (10 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings310 — better
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.018.5 — better
Further details — not scored
Size17 MB78 MB
Age rating4+17+
DeveloperRudrank RiyamHYPE4MOBILE MALEWICZ I WSPOLNICY SPOŁKA JAWNA

Customer experience

Zenther

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Longevity Deck

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

In-app purchases

4 purchases

Zenther

Subscriptions3
  • Weekly$1.597 Days
  • Monthly$3.891 Month
  • Annual$28.491 Year
One-time1
  • Lifetime$59.99
None

Longevity Deck

No in-app purchases

Questions

Is Zenther free?
Zenther 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, Zenther or Longevity Deck?
Longevity Deck is rated higher. Zenther averages 3.7 out of 5 from 3 ratings, while Longevity Deck averages 4.8 from 10 ratings.
Do Zenther or Longevity Deck have ads?
Neither Zenther nor Longevity Deck shows ads.
Which is updated more often, Zenther or Longevity Deck?
Zenther ships an update every 4 days, and Longevity Deck every 4 days. Most recently, Zenther was updated on June 25, 2026 and Longevity Deck on September 27, 2026.

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