# CalmTide: Cortisol Tracker — Stress, HRV & Recovery Score > Stress, HRV & Recovery Score (iPhone/iPad app by Michael Smith.) - Source: https://appshunter.io/ios/app/calmtide-cortisol-tracker/id6776101012 (this page in markdown: same URL + `.md`) - Developer: [Michael Smith](https://appshunter.io/developer/1893971383) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 18.6 · 9 MB - Languages: English, German, Japanese, Spanish - Released: 2026-06-19 - Data updated: 2026-09-12 - User reviews in markdown: https://appshunter.io/ios/app/calmtide-cortisol-tracker/id6776101012/reviews.md ## What is CalmTide? Lower your baseline cortisol. CalmTide reads the Apple Health data you already have — sleep, HRV, workouts, resting heart rate, mindful minutes — and turns it into one clear picture of your stress biology: an HPA Balance Score today, and an estimated baseline-cortisol trend over 8 weeks. Not another meditation timer. A measurement layer for calm. Everything runs on your device. No account, no cloud, no analytics. Your health data never leaves your phone. SEE TODAY CLEARLY • HPA Balance Score (0–100) from a named, citation-backed model — tap any number to see the research behind it • One smart recommendation, chosen for today — not a generic list • A daily protocol checklist: breathwork, Zone 2, sleep, morning light • Recovery signals at a glance: HRV, resting heart rate, sleep, respiratory rate • Where your HRV and resting heart rate sit against typical ranges for your age and sex (Pro) FIND YOUR PATTERNS • Morning-after insights: what caffeine, alcohol, late meals and hard workouts did to your HRV, sleep and readiness — read the next morning, when the biology actually lands • What your check-ins reveal (Pro): whether how you feel actually tracks your sleep, HRV and training, compared across your own days • Your strongest cortisol link, from your own data — suggestive, not causal, and always explained • Personal records: longest streak, best HPA week, calmest morning UNDERSTAND YOUR WEEK • A weekly retrospective that ranks exactly what moved your score — sleep, morning light, HRV, mindfulness, training load — in points, this week versus last • Every workout with heart-rate data scored for its cortisol effect: reducing, neutral, or spiking. Sessions without it still count toward your weekly dose — they are never guessed at • Training load as plain figures: acute-to-chronic ratio, monotony and strain (Pro) ACT ON IT • Practice hub: cyclic sighing (Balban 2023) and resonance breathing (Steffen 2020), in 2, 5 or 10-minute doses, suggested by situation — evening wind-down, post-workout, elevated load • Completed sessions save to Apple Health as Mindful Minutes • Morning-light coaching to anchor your body clock — the clock that times your morning cortisol rise • Smart, quiet notifications that arrive when they help — never to interrupt WATCH YOUR BASELINE FALL • An 8-week estimated baseline-cortisol trend with your life events pinned to it — illness, travel, deadlines — so shifts make sense • A 7-day cortisol forecast from your training and sleep (Pro) • Check in from your wrist with the Apple Watch app PRIVATE BY DESIGN • On-device analysis, including the optional Calm Coach explainer • Export or restore your data any time — it's yours • App Privacy label: Data Not Collected CalmTide is free to use daily. CalmTide Pro (full 8-week trend, extended 60- and 90-day history, the cortisol forecast, score & forecast widgets, scores on Apple Watch, advanced training-load analytics and Calm Coach) is available as a monthly or annual subscription, or a one-time lifetime purchase. New subscribers get a 1-month free trial. Subscriptions auto-renew until cancelled; the price and any trial are shown before you confirm. CalmTide is a wellness tool. It estimates — it does not measure cortisol, and it does not diagnose or treat any medical condition. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly | $4.99 | per month | | Annual | $29.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime | $19.99 | one-time | ## Version history (last 5 releases) ### 1.7 — 2026-09-10 CalmTide 1.7: every number means exactly what it says. • Workouts without heart-rate data are no longer scored as easy Zone 2. A manually logged session, a third-party app that saves duration only, or a day your watch stayed home used to be credited as the most favourable kind of training. Those minutes still count toward your weekly dose — worked out from calories, and capped so an unmeasured session can never out-score a measured one — but they claim no intensity, and the Week tab now tells you how many minutes came through without heart rate. • Training load shows the ratio, not a verdict. The acute-to-chronic card no longer files you under a coloured band — the paper behind those bands measured injuries in team-sport athletes, not stress hormones. You see your last 7 days against your 4-week base, plus monotony and strain as plain figures. With no 4-week base to compare against, it says so instead of calling you optimal. • New: an optional drink count on the daily check-in. Tag a night with alcohol and a small stepper appears. Once you have enough nights on each side, Insights compares your own next-day resting heart rate and HRV after one drink against two or more — your numbers, both sample sizes shown, no score and no lecture. Nights without a count are left out, not assumed light. • The daily cortisol curve is labelled for what it is: the typical rhythm, anchored to your wake time when your watch recorded one. When it didn't, the curve is shown as education only — no invented wake time, no "you are here". • Copy corrections across the app: breathwork descriptions now say what the cited study measured (cardiac vagal activity, during the session), morning-light and sleep-timing tips describe how your body clock times the morning cortisol rise rather than promising to sharpen it, and the environmental-sound card no longer draws a "safe" line that the WHO guideline it cited never set for stress. • Fixed: two Home Screen widget check-ins in quick succession could overwrite each other. Both now land. Everything runs on your device. CalmTide is a wellness tool and does not diagnose or treat any medical condition. ### 1.6 — 2026-08-20 CalmTide 1.6 is about making every number mean exactly what it says. • HRV, measured while you actually sleep — your daily HRV now comes from the readings taken during the night, not a 24-hour average that mixed in your commute and your workouts. On a night your watch wasn't worn, CalmTide falls back to the day's readings and tells you it did, instead of quietly changing what the number means. • Sleep is now scored on regularity, not just hours — how consistent your sleep timing is predicts more than how long you slept. A steady wake time now counts toward your score, with the same weight it deserves. • New: sleep continuity — awakenings, time awake in bed, and sleep efficiency, for nights your device records them. • Social jetlag — the gap between your body clock on work days and free days, measured from your mid-sleep point the way the research defines it. • "Morning sun / CAR" is now "Morning rhythm" — it was never a measured cortisol awakening response, and it no longer claims to be. It's a blend of your wake time, morning light and sleep quality, which is what it always was. • Morning light now means morning — daylight is counted in the window after you wake, so an evening walk no longer ticks a morning box. • What CalmTide can't see never counts against you — no daylight sensor, too few nights of sleep timing, a night the watch was charging: those now leave a gap in the picture instead of a zero in your score. Everything runs on your device. CalmTide is a wellness tool and does not diagnose or treat any medical condition. ### 1.5 — 2026-08-01 • What your check-ins reveal (Pro) — after a few weeks of check-ins, see whether how you feel actually lines up with your sleep, HRV and training. Compared across your own days, never presented as cause and effect. ### 1.4 — 2026-07-09 CalmTide 1.4 turns your cortisol data into daily habits — and gives your practice credit. • Morning light coaching — anchor your cortisol awakening rhythm by catching outdoor light soon after you wake, with a two-week "circadian anchor" score in Insights. • Life events on your trend — pin illness, travel, or a big deadline onto your 8-week baseline so a shift makes sense instead of feeling random. • Smarter reminders — the morning check-in now arrives around your usual wake time, with a heads-up the evening before a high-cortisol day and a wind-down cue after a late hard session. • One-tap check-in widget — log how you feel straight from your Home Screen (iOS 17+). • Breathwork now counts — completing an in-app breathwork or resonance session saves it to Apple Health as Mindful Minutes, so it shows in Health and counts toward your daily practice. • Clearer "morning light → next-day HRV" insight, plus reliability and performance improvements. Everything runs on your device. CalmTide is a wellness tool and does not diagnose or treat any medical condition. ### 1.3 — 2026-07-06 CalmTide 1.3 makes your data easier to read at a glance and adds new signals to your Insights. • Lock Screen widgets — keep today's HPA-balance score and trend on your Lock Screen (circular, rectangular, and inline). • Personalized benchmarks — see how your HRV and resting heart rate compare to typical ranges for your age and sex (Pro). • More Health signals in Insights — new cards for blood oxygen (SpO₂), walking heart rate, and time on your feet. • Body weight in your units — now shows in pounds or kilograms to match your device's region. • Data-confidence indicator — every score tells you how much Apple Health data is behind it, so you know when your baseline is still building. • Fairer with missing data — a night you didn't wear your watch no longer counts as "no sleep," so your readings stay accurate. • Faster and smoother — quicker tab loads and a range of reliability fixes. Everything runs entirely on your device. CalmTide is a wellness tool and does not diagnose or treat any medical condition. ## Apps similar to CalmTide | App | Rating | Price | Category | | --- | --- | --- | --- | | [Nome - Breathwork & Calm](https://appshunter.io/ios/app/nome-breathwork-and-calm/id6760903238) | — | Free | Health & Fitness | | [Zeni: Breath & Calm Meditation](https://appshunter.io/ios/app/zeni-breath-and-calm-meditation/id6753077274) | — | Free | Health & Fitness | | [CalmBP - Blood Pressure Track](https://appshunter.io/ios/app/calmbp-blood-pressure-track/id6758288924) | 5.0 (1) | Free | Health & Fitness | | [Unbroken: Every restart counts](https://appshunter.io/ios/app/unbroken-every-restart-counts/id6758307663) | — | Free | Health & Fitness | | [Zenter: Meditation & Calm](https://appshunter.io/ios/app/zenter-meditation-and-calm/id6751966088) | 5.0 (2) | Free | Health & Fitness | | [CRTX - See Your Stress](https://appshunter.io/ios/app/crtx-see-your-stress/id6772443206) | — | Free | Health & Fitness | ## More apps by Michael Smith - [SolGlow: Vitamin D Tracker](https://appshunter.io/ios/app/solglow-vitamin-d-tracker/id6763976252) All apps by Michael Smith: https://appshunter.io/developer/1893971383 ## Related topics [apple watch cortisol tracker](https://appshunter.io/ios/topics/apple-watch-cortisol-tracker) · [free cortisol tracker](https://appshunter.io/ios/topics/free-cortisol-tracker) · [cortisol tracker](https://appshunter.io/ios/topics/cortisol-tracker) · [eli cortisol](https://appshunter.io/ios/topics/eli-cortisol) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-12.*