VitalLens
NIKOLAOS SYNANIDIS Health & Fitness iPhoneiPadiPod touchApple Watch
VitalLens is a free Health & Fitness app for iPhone and iPad by NIKOLAOS SYNANIDIS. Rated 4.0/5 from 2 ratings. Requires iOS 18.0. Updated August 11, 2026.
- Rating
- 4.0
- 2 ratings
- Price
- Free
- on the App Store
- Size
- 26 MB
- Age 4+
- Updated
- Aug 11
- 2026 · v1.14
Screenshots
About VitalLens
Most health apps show you data. VitalLens tells you what it means. Every morning, VitalLens reads your Apple Health data — HRV, resting heart rate, sleep, wrist temperature and activity — and turns it into a single Health Today score from 0 to 100. No athletic jargon. No confusing charts. Just a calm, honest sentence that tells you how you're likely to feel today, and why. YOUR SCORE, YOUR BASELINE VitalLens grades you against yourself, not against averages built for elite athletes. It learns your personal normal over time, so a score means something specific to you. A tappable Why breakdown explains exactly what moved your number — in words that make sense before your first coffee. YOUR ENERGY, ALL DAY LONG The Energy Reserve is a live charge that mirrors your body throughout the day. It tops up while you rest and draws down as activity and stress accumulate. Check it any time on the app, your Home Screen widget or your Apple Watch to know whether to push on or take a breath. RECOVERY AT A GLANCE Each morning you get a simple status: Well Recovered, Recovering or Strained. It's drawn from your overnight HRV, resting heart rate, wrist temperature and sleep — the same signals sports scientists use, translated into plain language anyone can act on. FOUR GAUGES, ONE CLEAR PICTURE Energy, Stress, Heart Health and Sleep each get a plain-English gauge updated daily. Tap any one for a straight-talking explanation of what's driving it. Trend arrows and a 30-day outlook show you where things are heading, so you can spot patterns before they become problems. HABITS AND COACHING BUILT AROUND YOU The Habit Discovery engine quietly looks for personal correlations on your device — things like "your stress gauge is lower on days you walk more than 6,000 steps." No health data leaves your phone. The VitalLens AI Coach goes further: chat about any metric in plain English, or follow a guided Goal with a personalised AI roadmap built around your real numbers. EVERY WEEK, A HEALTH STORY Your Weekly Health Story wraps up the past seven days in a short, readable summary — what went well, what to watch and one simple thing worth trying next week. PRIVACY FIRST VitalLens reads your data from Apple Health. It does not sell your data, share it with advertisers or store your personal health information on external servers. Everything stays on your device or within your private iCloud account. VitalLens is a wellness tool, not a medical device, and nothing in the app constitutes medical advice. Always consult a qualified healthcare professional for any medical concerns. Start with a 7-day free trial on the annual plan, or go week by week with no commitment. Download it today and wake up tomorrow knowing exactly how you're doing. Terms of Use: https://nusli.app/terms Privacy Policy: https://nusli.app/privacy
What’s new
Version 1.14 · Updated August 11, 2026
This release is an accuracy pass over every number in the app. ONE SCORE, EVERYWHERE The ring, the monthly chart, Trends and your daily "why" now share a single calculation, so they can no longer disagree with each other. MISSING DATA NO LONGER COUNTS AGAINST YOU If your watch doesn't record a metric, the remaining signals carry the full weight instead of it being scored as a zero. Each score now also shows how many signals are behind it. YOUR MORNING SCORE IS HONEST Today's steps and calories are judged against how far through the day you are, so the number no longer starts low and climbs all day. PAST DAYS RECALCULATED Your recent history has been rebuilt with the corrected formula. Expect the monthly chart to shift once — that's the fix landing. A BETTER BODY AGE Rebuilt so it grades properly instead of maxing out, with age-aware expectations and new signals from Apple Health — blood pressure, body composition, walking and stair speed — used only when they're actually there. HONEST CHARTS Glitch readings are filtered, curves can no longer dip below what really happened, and genuine gaps in your data are shown as gaps instead of an invented line. CLEARER CARDS Energy Reserve says when it's estimating and which signal is missing. Recovery only ever shows genuinely last night's sleep, and its fitness rows are coloured against age-appropriate expectations. ALSO A dashed average line on the monthly chart, an optional health details section in Settings to sharpen Body Age, and a batch of fixes across Goals and Settings.
App privacy
The developer, NIKOLAOS SYNANIDIS, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases: Purchase History
- Identifiers: Device ID
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID, User ID
- Purchases: Purchase History
- Usage Data: Product Interaction
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Health, Fitness
- Location: Coarse Location
Used for: App Functionality
Alternatives to VitalLens
Looking for apps like VitalLens? Here are 6 similar apps on the App Store. The highest rated is Wellobit: Stress Tracker (5.0/5), and all 6 are free to download.
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Wellobit: Stress Tracker
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BloomFit - Cycle Workout Coach
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AIBODY — Health & Longevity
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Boddy: Stress & Sleep Monitor
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WalkHero: Pedometer & Steps
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ShiftNight: Sleep Tracker
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| App | Rating | Price | Last updated |
|---|---|---|---|
| VitalLens | 4.0 / 5 (2 ratings) | Free | August 11, 2026 |
| Wellobit: Stress Tracker | 5.0 / 5 (2) | Free | Aug 11, 2026 |
| BloomFit - Cycle Workout Coach | – | Free | Jul 2, 2026 |
| AIBODY — Health & Longevity | 5.0 / 5 (1) | Free | Sep 23, 2026 |
| Boddy: Stress & Sleep Monitor | 4.0 / 5 (1) | Free | Sep 2, 2026 |
| WalkHero: Pedometer & Steps | 4.4 / 5 (5) | Free | Aug 8, 2026 |
| ShiftNight: Sleep Tracker | 4.9 / 5 (58) | Free | Sep 15, 2026 |