Comparison

SwellSpa vs Longevity One Pro

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

Head to head
About

SwellSpa

Features
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SwellSpa is a therapeutic sound app designed by London’s award-winning Swell Studio, founded by international DJ and sound therapist Brian d’Souza. It offers purposeful, end-to-end sound experiences designed exclusively for spa treatment rooms, relaxation rooms and hotel bedrooms. Access a range of therapeutic sound options designed to achieve specific outcomes: deep relaxation, emotional uplift, improved sleep or closer connection to nature - the perfect accompaniment to any massage or treatment, or as a touchless wellness experience. KEY FEATURES: SwellSpa has been shown to deliver a range of health benefits: deep relaxation, cognitive insight, emotional uplift, increased happiness and connection with nature. Sound affects the brain and body in multiple ways. Swell’s unique generative technology uses sound therapy, biophilic sound and binaural frequencies to activate the parasympathetic nervous system, reduce heart rate and boost mood. Users can select their desired outcome from the options outlined below: ~To Feel Inspired ~To Connect With Nature ~To Feel Relaxed ~To Help Sleep DESIGNED WITH THE SPA IN MIND: Sounds can be choreographed to match the duration of the treatment and mood of the customer, delivering a novel listening experience on every listen, meaning no more listener fatigue. SwellSpa can also be accessed via iOS devices - typically set up in treatment rooms, listening stations, integrated with an existing AV set up or on vibracoustic furniture. SwellSpa is supported with workshops, training, on-boarding, and continual support through the process. TRANSPORTED BY SOUND: SwellSpa offers multiple β€˜sound journeys’ not generic genres of music - helping to transport the customers to beautiful locations around the world through the power of sound. These include locations in forests or by the sea from The Outer Hebrides to Ibiza, Nepal, Japan, Switzerland, Cape Verde and India. The SwellSpa app puts customers and therapists in control of the experience - the duration of the treatment can be adjusted on the go and the experience becomes more active as a result - raising the value of sound in the treatment room to another level (with no copyright licenses required), and presenting a superior alternative to passive, traditional background music playlists. SCIENTIFICALLY-TESTED: SwellSpa is scientifically tested to reduce stress, lower heart rate, increase cognitive clarity (via the increase of alpha waves) and increase nature connectedness. It achieves this by the unique combination of binaural frequencies which entrain user brain waves, generative technology that adapts to preferences, sound therapy techniques that trigger the parasympathetic nervous system and musical sounds that are created by award-winning musicians. Our research study conducted in partnership with Kinda Studios and Goldsmiths University demonstrated that after only 15 minutes of use, Swell’s soundscape significantly improved relaxation, lowered heart rates, and increased alpha brainwave activity, enhancing creativity and openness. Participants felt more connected to nature, with notable increases in Nature Relatedness (NR) and Nature Connectedness (NC), key to wellbeing and pro-environmental behaviours. The study measured EEG brainwave and heart rate with a detailed questionnaire. ABOUT SWELL: Swell is an award-winning sound and well-being studio based in London, founded by DJ and sound therapist Brian d’Souza. Swell harnesses the power of sound to deliver positive, measurable health benefits for users, combining sound therapy, music composition and nature.

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
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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 β€’ Longevity Score – one shareable metric of overall health-span potential β€’ Lifestyle Age – how your daily choices compare with someone your calendar age β€’ Biological Age (blood) – enter core lab results and watch our PhenoAge-based model reveal your true underlying age How Longevity One helps β€’ 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 β€’ Habit Builder & Tracker – tick off proven micro-actions: steps, fasting window, sleep, mindfulness, veg intake and more β€’ Clinician-written lessons & quizzes – bite-sized, evidence-based learning with no jargon β€’ Beautiful trends dashboard – see weeks, months and years of progress at a glance β€’ Apple Health sync – secure, on-device integration; no extra wearables required What’s free β€’ Personal Longevity Score & lifestyle dashboard β€’ Upload one clinical document or blood test results and get an AI Summary β€’ Unlimited habit tracking (steps, sleep, fasting, mood, etc.) β€’ One-off Biological Age calculation with smart range validation β€’ Daily longevity tip graded A–D for scientific strength β€’ Starter pack of clinician-written lessons and quizzes β€’ End-to-end encrypted HealthKit integration Upgrade to Longevity One + and unlock β€’ Unlimited Biological-Age recalculations – update results whenever your blood markers change β€’ Interactive trend graphs – track Biological Age, Longevity Score and individual biomarkers over time β€’ Full AI Daily Insights – personalised guidance refreshed after every Daily Check-In β€’ 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. β€’ Complete lesson & quiz library – deep dives on sleep, nutrition, stress, supplements and more β€’ 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/

Screenshots

SwellSpa4 screens
Longevity One Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: SwellSpa at none against Longevity One Pro's 2. Longevity One Pro's advantage is update cadence (every 6 days vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Longevity One Pro sells 2 in-app purchases, starting at $9.99 per month. SwellSpa asks for nothing beyond the download.

UpkeepUpdate frequency

SwellSpa ships an update every 10 months, Longevity One Pro every 6 days. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

Scorecard2 real differences Β· 6 level
SwellSpa versus Longevity One Pro: the parameters behind the verdict, then further details
ParameterSwellSpaLongevity One Pro
PriceFreeFree
Positive reviewsβ€”100.0% of reviews
Update frequencyEvery 10 monthsEvery 6 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
Monetizationβ€”Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 β€” better17.6
Further details β€” not scored
Size902 MB244 MB
Age rating4+4+
DeveloperSwell Studio LtdFetched Wellness Ltd

In-app purchases

None

SwellSpa

No in-app purchases

2 purchases

Longevity One Pro

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

Questions

Is SwellSpa free?
SwellSpa is free to download, with no in-app purchases.
Is Longevity One Pro free?
Longevity One Pro is free to download, with in-app purchases available.
Do SwellSpa or Longevity One Pro have ads?
Neither SwellSpa nor Longevity One Pro shows ads.
Which is updated more often, SwellSpa or Longevity One Pro?
SwellSpa ships an update every 10 months, and Longevity One Pro every 6 days. Most recently, SwellSpa was updated on October 4, 2026 and Longevity One Pro on October 10, 2026.

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