Comparison

Longevity One Pro vs Sit to Stand

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

Head to head
About

Longevity One Pro

This app translates longevity research into actionable daily habits. It uses lifestyle data, optional blood markers, and AI to estimate your health-span potential and guide you toward healthier choices. Track progress, store health documents, and gain AI-powered insights to add healthy years to your life.

Highlights
  • Longevity Score tracking
  • Lifestyle Age comparison
  • Biological Age calculation (blood tests)
  • AI Daily Insights and recommendations
  • Habit Builder & Tracker
  • Evidence-based lessons and quizzes
  • Trends dashboard
  • Apple Health sync
Features
Read full description

Add healthy years – starting today Longevity One turns cutting-edge longevity research into simple daily actions you can measure and master. By blending lifestyle data, optional blood-test markers and AI-powered guidance, the app shows your current health-span potential and the exact habits that move it in the right direction. It is an all in one solution to improve your healthspan, store your longevity related clinical documents, blood tests and unlock insights with the power of AI. Key numbers you’ll see • Longevity Score – one shareable metric of overall health-span potential • Lifestyle Age – how your daily choices compare with someone your calendar age • Biological Age (blood) – enter core lab results and watch our PhenoAge-based model reveal your true underlying age How Longevity One helps • AI Daily Insights – explains why your score rose or fell and suggests the next best step based on NHS and local UK guidelines and recommendations • Habit Builder & Tracker – tick off proven micro-actions: steps, fasting window, sleep, mindfulness, veg intake and more • Clinician-written lessons & quizzes – bite-sized, evidence-based learning with no jargon • Beautiful trends dashboard – see weeks, months and years of progress at a glance • Apple Health sync – secure, on-device integration; no extra wearables required What’s free • Personal Longevity Score & lifestyle dashboard • Upload one clinical document or blood test results and get an AI Summary • Unlimited habit tracking (steps, sleep, fasting, mood, etc.) • One-off Biological Age calculation with smart range validation • Daily longevity tip graded A–D for scientific strength • Starter pack of clinician-written lessons and quizzes • End-to-end encrypted HealthKit integration Upgrade to Longevity One + and unlock • Unlimited Biological-Age recalculations – update results whenever your blood markers change • Interactive trend graphs – track Biological Age, Longevity Score and individual biomarkers over time • Full AI Daily Insights – personalised guidance refreshed after every Daily Check-In • Securely upload unlimited clinical documents with your previous scan results, VO2 Max, Dexa, etc., prescriptions and blood test results and save an AI Summary of what they mean. • Complete lesson & quiz library – deep dives on sleep, nutrition, stress, supplements and more • Priority support and feature voting – help shape the app’s future Annual plan includes a 7-day free trial. Cancel any time in Settings at least 24 h before renewal. Your privacy, our priority All calculations run locally or in your private iCloud. Your data is never sold, shared or used for advertising. Ready to add life to your years? Download Longevity One and start building healthier decades today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mylongevitycentre.co.uk/longevity-app-privacy-policy/

About

Sit to Stand

Measure leg strength with a 30-second chair-stand test using motion sensors. Track progress, receive age-based comparisons, and access guided training sessions. Designed for older adults with large text and simple navigation.

Highlights
  • 30-second chair-stand test
  • Automatic repetition counting
  • Age and sex reference data comparison
  • Guided sit-to-stand training sessions
  • Retest reminders and progress tracking
  • Large text and simple interface
Features
Read full description

Measure your leg strength with the 30-second chair stand test — counted automatically and scored for your age. This app uses the validated 30-second chair-stand assessment — the same test physiotherapists and geriatric clinics use — and counts your repetitions automatically using your phone's motion sensors. No stopwatch, no counting, no pen and paper. HOW THE TEST WORKS • Sit in a sturdy chair, feet flat on the floor about hip-width apart • Hold the phone against your chest with both hands • Stand up and sit down as many times as you can in 30 seconds • The app counts for you and speaks encouragement as you go Your result is compared against published age and sex reference data, so you see not just a number but what it means for someone your age. NEW — SIT TO STAND TRAINING Testing tells you where you stand. Training moves the number. • Short guided sessions of sit-to-stand sets, built around your last result • Voice coaching through every set, with rest between them • Choose your own training days and get one gentle reminder — never daily • Always free THE RETEST LOOP • Set your own cadence — every one to four weeks • One reminder when your next check-in is due • See the change since last time, and your count over months BUILT FOR OLDER ADULTS Large text, large buttons, plain words instead of icons, and one clear action per screen. FREE • The 30-second test with automatic counting • Voice guidance and age-based scoring • Sit to Stand Training, in full • Your test history PRO — one payment, no subscription • Unlimited tests • Progress charts, including your pace within a single test • Clinic Mode — test and track several people separately • Export to PDF and CSV for your physiotherapist or GP PRIVACY Everything stays on your iPhone. The app has no analytics, no advertising and no crash reporting, and makes no network connections of its own. Your results are yours. No account, no server, no analytics, no ads. IMPORTANT This app is for information and self-tracking only. It is not a medical device and does not provide medical advice, diagnosis or treatment. Always consult a qualified healthcare professional. Stop if you feel unwell, and use a chair against a wall.

Screenshots

Longevity One Pro4 screens
Sit to Stand4 screens

Verdict

The call

Longevity One Pro and Sit to Stand are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Longevity One Pro sells 2 in-app purchases, starting at $9.99 per month and Sit to Stand sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Longevity One Pro ships an update every 6 days, Sit to Stand every 11 days. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.

ScorecardNo meaningful differences
Longevity One Pro versus Sit to Stand: the parameters behind the verdict, then further details
ParameterLongevity One ProSit to Stand
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 days — betterEvery 11 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better18.0
Further details — not scored
Size244 MB7 MB
Age rating4+4+
DeveloperFetched Wellness LtdSANCHIT AGGARWAL

Customer experience

Longevity One Pro

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Sit to Stand

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Longevity One Pro

Subscriptions2
  • Longevity One Pro Plan$9.991 Month
  • Annnual Subscription7 Days trial$99.991 Year
1 purchases

Sit to Stand

One-time1
  • Pro Upgrade$1.99

Questions

Is Longevity One Pro free?
Longevity One Pro is free to download, with in-app purchases available.
Is Sit to Stand free?
Sit to Stand is free to download, with in-app purchases available.
Do Longevity One Pro or Sit to Stand have ads?
Neither Longevity One Pro nor Sit to Stand shows ads.
Which is updated more often, Longevity One Pro or Sit to Stand?
Longevity One Pro ships an update every 6 days, and Sit to Stand every 11 days. Most recently, Longevity One Pro was updated on October 10, 2026 and Sit to Stand on October 18, 2026.

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