ALDS vs OutPerform Health Tracker
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
ALDS
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The ALDS (Ambulatory Lung Diagnostic System) combines oscillometry, FeNO, and spirometry to enable fast and comprehensive respiratory assessment. Its cloud-based algorithms evaluate measurement data alongside patient history to support the physiological interpretation of obstructive, restrictive, and inflammatory patterns. Designed for use in primary and outpatient care, the system enables efficient, non-invasive assessments within minutes and supports clinicians in the evaluation and management of respiratory conditions.
OutPerform Health Tracker
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Know your body. Then outperform. OutPerform turns the health data you already have into clear daily guidance β so you know when to push, when to rest, and when your mind is sharpest. Everything is computed privately on your iPhone using transparent, published sports-science methods. No accounts. No servers. No subscription. Connect Apple Health or Google Health, and OutPerform reads your heart rate, HRV, sleep, breathing, blood oxygen, temperature and workouts to give you: RECOVERY A morning recovery score from your overnight HRV (RMSSD / DFA-Ξ±1), resting heart rate, breathing rate and sleep β each measured against your own personal baseline. STRAIN & TRAINING LOAD Cardiovascular load on a 0β21 scale, plus acute-to-chronic workload ratio and training monotony, so you build fitness without overreaching. SLEEP Sleep stages, efficiency and a performance score, a dynamic nightly sleep-need target that rises with the day's strain, and a smart bedtime recommendation. COGNITIVE FOCUS Predict how "locked in" you'll be hour by hour and find your peak deep-work windows β then calibrate it to yourself with a one-minute reaction test. READINESS One daily number that folds recovery, last night's sleep and your training-load balance into a clear go / steady / rest call. HEALTH MONITORING Track blood oxygen, respiratory rate, skin temperature and VOβ max against your baseline, with an overnight breathing-disruption (ODI) screening signal. PLUS - Scrubbable 7/30/90-day trends for every metric - A tap-through explanation of how each score is calculated - Home-screen widgets - Export all your data, or wipe it, any time PRIVATE BY DESIGN Your health data never leaves your phone. OutPerform has no backend and no account β every score is computed on-device, and nothing is ever sold or shared. Connections to Apple Health and Google Health are read-only. GROUNDED IN SCIENCE No black boxes. OutPerform uses peer-reviewed methods β RMSSD/DFA-Ξ±1 HRV, Banister TRIMP, acute:chronic workload ratio, the Three-Process Model of alertness, Gellish max-HR, Γ strand VOβ and more β and shows you the formula behind every number. Free to use. β OutPerform is not a medical device and does not diagnose, treat or prevent any condition. Screening features are informational only and are not a substitute for professional medical advice.
Screenshots
Verdict
The clearest difference is update cadence: OutPerform Health Tracker at every 2 months against ALDS's every 6 months. ALDS's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ALDS ships an update every 6 months, OutPerform Health Tracker every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | ALDS | OutPerform Health Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 2 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.0 β better | 26.0 |
| Further details β not scored | ||
| Size | 24 MB | 9 MB |
| Age rating | 17+ | 4+ |
| Developer | LOTHAR MEDTEC GmbH | Afonso de Mello |
In-app purchases
ALDS
No in-app purchases
OutPerform Health Tracker
No in-app purchases









