Comparison

Weight Loss Fasting Timer Lyn 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

Weight Loss Fasting Timer Lyn

This app helps you track your intermittent fasting periods with a clean, minimalist interface. It offers customizable timers, timely notifications, and helpful insights into your fasting habits. Widgets and Siri integration provide convenient access to your progress.

Highlights
  • Customizable fasting timer
  • Progress notifications
  • Home and lock screen widgets
  • Fasting pause functionality
  • Vital metrics tracking
  • Siri and Shortcuts integration
Features
Read full description

Lyn is a minimalist intermittent fasting tracker with a clean design and the essential features you need. It fits seamlessly into your routine, makes tracking fasts simple, and proactively provides useful insights. Fasting timer. See clearly how much time remains until you reach your fasting goal or your eating window ends. You can adjust your fasting goal at any time, even during an active fast, if your plans change. Notifications. Lyn notifies you when you reach your goal and when your eating window ends, so you don’t have to keep checking the time. Home Screen and Lock Screen widgets. Keep your progress in view with widgets that show the information that matters most. Fasting pause. Sometimes you need more flexibility in your fasting schedule, such as during holidays or travel. Lyn lets you pause your fasting routine and reminds you to resume it later. Vital metrics. Keep your goal streak for extra motivation and review historical data, including your average eating window length and longest fast. Shortcuts and Siri. Lyn is built exclusively for Apple devices, with deep system integrations. Alongside widgets, you can use Shortcuts to create fasting automations or Siri to start and stop a fast. Privacy policy: https://lyn.software/privacy Terms: 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

Weight Loss Fasting Timer Lyn4 screens
Longevity Deck4 screens

Verdict

The call

The clearest difference is in-app purchases: Longevity Deck at none against Weight Loss Fasting Timer Lyn's 2. Longevity Deck also leads on update cadence (every 4 days vs every 2 months) and ratings volume (10 vs 2). Weight Loss Fasting Timer Lyn's advantage is review sentiment (100% vs 80%) and rating (5.0 vs 4.8). On price, 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. Weight Loss Fasting Timer Lyn sells 2 in-app purchases, starting at $5.99 per year. Longevity Deck asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Weight Loss Fasting Timer Lyn 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 Weight Loss Fasting Timer Lyn's written reviews are positive against 80% of Longevity Deck's.

UpkeepUpdate frequency

Weight Loss Fasting Timer Lyn ships an update every 2 months, Longevity Deck every 4 days. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
Weight Loss Fasting Timer Lyn versus Longevity Deck: the parameters behind the verdict, then further details
ParameterWeight Loss Fasting Timer LynLongevity Deck
PriceFreeFree
Rating5.0 (2 ratings) — better4.8 (10 ratings)
Positive reviews100.0% of reviews — better80.0% of reviews
Number of ratings210 — better
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS26.018.5 — better
Further details — not scored
Size16 MB78 MB
Age rating12+17+
DeveloperMykola HarmashHYPE4MOBILE MALEWICZ I WSPOLNICY SPOŁKA JAWNA

Customer experience

Weight Loss Fasting Timer Lyn

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Longevity Deck

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

In-app purchases

2 purchases

Weight Loss Fasting Timer Lyn

Subscriptions1
  • Lyn Plus Yearly7 Days trial$5.991 Year
One-time1
  • Lyn Plus Lifetime$14.99
None

Longevity Deck

No in-app purchases

Questions

Is Weight Loss Fasting Timer Lyn free?
Weight Loss Fasting Timer Lyn 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, Weight Loss Fasting Timer Lyn or Longevity Deck?
Weight Loss Fasting Timer Lyn is rated higher. Weight Loss Fasting Timer Lyn averages 5.0 out of 5 from 2 ratings, while Longevity Deck averages 4.8 from 10 ratings.
Do Weight Loss Fasting Timer Lyn or Longevity Deck have ads?
Neither Weight Loss Fasting Timer Lyn nor Longevity Deck shows ads.
Which is updated more often, Weight Loss Fasting Timer Lyn or Longevity Deck?
Weight Loss Fasting Timer Lyn ships an update every 2 months, and Longevity Deck every 4 days. Most recently, Weight Loss Fasting Timer Lyn was updated on October 8, 2026 and Longevity Deck on October 13, 2026.

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