Sharper sleep & bedtime • Sleep regularity now accounts for the time zone each night was recorded in — so travel no longer makes a steady sleeper look irregular. • Bedtime reminders follow your usual at-home rhythm instead of being pulled late by trips. Plus performance and stability improvements.

Polish and fixes • Cleaner labels and translations across the app. • Performance and stability improvements.

Smarter Strength score • Your Fitness Strength score now follows the science of resistance training — how often you lift, your weekly volume, and how much you vary it — rather than heart rate. Conditioning like HIIT and hikes is counted where it belongs, under Load and Intensity. A deeper Strength view • Tap Frequency, Volume, or Variety to see what each measures, the research behind it, and this week's sessions — plus a new "What counts" list of every activity that feeds the score. Better bedtime reminder • Your bedtime nudge now lands at a sensible time based on your usual sleep — never past it. Plus performance and stability improvements.

Rewind your Longevity tab • Tap the date on Longevity to revisit any past day — its score, biomarkers, biological age, recovery, and streaks. Time travel now covers all three tabs: Drift, Fitness, and Longevity. Truer pace splits • Pace splits for runs, walks, and hikes now match your route's real distance, so each split — and the average — lines up with your overall pace. Stronger Strain for multi-sport • Strain now reads heart rate from bike computers, third-party apps, and brick-workout legs, so those sessions count toward your load. Plus performance and stability improvements.

Your heart-rate zones, your way • Choose how Drift calculates your heart-rate zones — Heart-Rate Reserve (the Karvonen method, like Apple Fitness), personalized with your resting heart rate, or a simple % of max HR. Rewind your Fitness tab • Jump to any past day on the Fitness tab to see that day's score, strain, form, and workouts.

Jet lag, all the way home • Flying home doesn't end jet lag — so Drift now follows the days your body clock takes to re-sync after you land, and keeps guiding you until you're back in rhythm. • Sleep from travel nights is now read in the right time zone, so crossing the globe no longer doubles up or drops a night. A livelier Apple Watch • Your scores now fill and count up as each Watch screen opens, finishing with a gentle tap on your wrist. • Rings have a richer gradient look, and the home glance glides in instead of popping into place.

A Drift that comes alive • Your scores now animate as the app opens — rings fill and numbers count up to today's value, with a gentle haptic as they land. • Trend charts no longer clip at the top, so a perfect 100% finally looks like one. Sharper widgets • Home Screen and Lock Screen widgets now show your alignment as a gradient ring that matches the app. Faster and smoother • A lighter, quicker Drift: snappier launch, less battery use on the home screen, and smoother scrolling. Refinements • Detected-pattern badges animate in, the home screen composes itself as it loads, and a stray highlight on the Longevity ring is gone.

Rock-solid background updates • Fixed a crash that could occur while Drift refreshed your health data in the background on a locked iPhone. • Hourly background refresh now keeps itself running reliably, and widgets update even while your iPhone is locked. Smarter strain for hikes and walks • Elevation gain now counts toward training load and logged hikes are priced as real exercise. • Strain Impact reads on a perceived-effort scale — a solid mountain hike finally reads like one. Better travel scoring • The jet-lag bedtime plan now anchors to your true at-home bedtime instead of trip-shifted nights — no more 4 AM suggestions. • Background updates apply the same jet-lag adjustment as the app, so your score no longer flips back overnight mid-trip. Faster and lighter • Smoother launch, less battery use on the home screen, and faster history. • The 6-month and 1-year trends now keep your complete history. Apple Watch in your language • Watch complications are now fully localized.

Rock-solid background updates • Fixed a crash that could occur while Drift refreshed your health data in the background on a locked iPhone. • Hourly background refresh now keeps itself running reliably, so your score is ready the moment you wake. Widgets you can trust • Lock Screen and Home Screen widgets now update while your iPhone is locked, and no longer show placeholder numbers after a restart. Steadier scores while traveling • Background updates now apply the same jet-lag adjustment as the app, so your score no longer flips back overnight mid-trip. Trends with full history • The 6-month and 1-year trend ranges now keep your complete history. Apple Watch in your language • Watch complications are now fully localized.

History that matches the day you're viewing • Look back at a past day and every breakdown — sleep, sun, heart, activity and more — now shows that day's numbers instead of the last 24 hours. Sharper travel & jet-lag detail • The Sleep Window chart now tags each night with its own time zone, so nights spent across zones no longer blur your averages. • The timezone-adjustment ring now reads a clean 100% on its final day. Environment without location • Environment and Sun Exposure now offer a one-tap way to enable location instead of quietly disappearing when it's off.

Zone Training, rebuilt around longevity • See how your last 14 days break down across each heart-rate zone — with your personalized bpm ranges and what each zone does for your healthspan. • Track the two zones that matter most for living longer: a Zone 2 aerobic base and your weekly vigorous (VO₂max) minutes, each against a research-backed target. • A clear easy/moderate/hard balance, plus the science and sources behind it — Zone 2 mitochondrial health, VO₂max and mortality, polarized 80/20 training. Find it at the bottom of the Longevity tab. Sharper jet-lag tracking • The "your body" re-entrainment reading is more accurate and now only moves forward as your overnight vitals settle — a single rough night no longer drags it backward.

Watch your jet lag fade • After you cross time zones, the Circadian Rhythm view now shows how far your body clock has re-adjusted to local time — a clear "percent adjusted" reading, measured from your overnight recovery, so you can watch jet lag lift day by day. • Bigger, easier-to-read rings, full VoiceOver support, and a tap on any card opens the science behind it. • You'll now find Circadian Rhythm at the bottom of the Longevity tab. Insights that load instantly and stay put • Your alignment trend summary and last night's sleep now appear the moment you open Drift — and stay put instead of being recalculated every time. Plus reliability fixes for background updates on travel days.

Travel-aware scoring • Drift now detects when you cross time zones and eases your daily score while your body clock re-adjusts — so jet lag no longer reads as "Off Course." • Tap the new travel card for an "adjust faster" plan: tonight's target bedtime plus light-timing tips. See your circadian rhythm • A new Circadian Rhythm view under Sleep charts your sleep window across recent nights — tighter, more aligned nights mean a steadier body clock. Sharper training load • Easy walking no longer over-counts toward Strain, and long, depleting efforts now count for more, so Form reflects real fatigue more faithfully. • Readiness surfaces more of your recovery signals as the day's data lands. The app is now fully localized across every supported language, plus dozens of fixes.

Travel-aware scoring • Drift now detects when you cross time zones and eases your daily score while your body clock re-adjusts — so jet lag no longer reads as "Off Course." • Tap the new travel card for an "adjust faster" plan: tonight's target bedtime plus light-timing tips. See your circadian rhythm • A new Circadian Rhythm view under Sleep charts your sleep window across recent nights — tighter, more aligned nights mean a steadier body clock. Sharper training load • Easy walking no longer over-counts toward Strain, and long, depleting efforts now count for more, so Form reflects real fatigue more faithfully. • Readiness surfaces more of your recovery signals as the day's data lands. The app is now fully localized across every supported language, plus dozens of fixes.

1.25 is a usability pass on the Fitness tab — the sub-score detail sheets are now visual instead of full of numbers and sport-science jargon, and Strength scoring now rewards intensity over minutes. • Visualised sub-scores. Load Ratio, Sameness, and Strength Intensity now render as colour-banded gauges with a position marker. Consistency shows your training week as a 7-day strip. Variety shows the actual subtypes you trained. • Plain English. "Load ratio" replaces "ACWR", "sameness" replaces "monotony", and the science citations live in a small Research footer per sheet if you want them. • Recovery → Readiness. The HRV-based daily training-readiness signal is now called Readiness, distinct from the broader Recovery category on the home tab. The percentage finally matches the sub-score ring. • Strength rewards intensity, not minutes. The 60-minute weekly target is gone. A 30-minute hard session now counts more than a 60-minute stroll. Intensity (5 pts) and Frequency (3 pts) are the new primary signals. • Personalized Sun Exposure. Set your skin type (Fitzpatrick I–VI) in Settings and your daily UV dose displays as a % of your safe ceiling — 100% is your burn threshold, ~33% is the vitamin-D-effective band. • Sun-dose alerts. When today's accumulated UV reaches 80% or 100% of your skin-type burn threshold, Drift pings once so you can shade up or reapply sunscreen before it matters.

1.24 brings a Fitness tab — a training-load view that turns your week of workouts into a clear story. • Fitness Score. Banister fitness, strain, and form rolled into a single 0–100 over the last 14 days. Five sub-scores — Load, Intensity, Recovery, Variance, Strength — each show which workouts drove them. • Intensity Pattern. Easy vs moderate vs hard, mapped to Seiler 3-zone. Drift coaches you toward the 80/20 split that endurance research keeps validating. • Form Forecast. Where your fitness is heading over the next 7 days — at your current load, in a rest week, or with a 20% bump. The PMC curve sits right next to it. • Recovery Alignment. Eight nightly signals checked against your 21-day baseline, with a transparent per-signal breakdown. • Late workout fix. Apple Watch workouts that sync after the fact now backfill correctly on every refresh.

1.23 makes Environment a real signal and quiets the day-to-day pings. • Sun Exposure. UV alone is intensity; the dose (intensity × time outside) is what shapes skin aging and vitamin-D. Your daily UV dose now appears in SED units, with reference bands grounded in dermatology research. • Calmer notifications. No more raw "+374%" deltas or chart-only labels like "Gait Asymmetry" in your pushes — Drift now uses warmer language tuned for the surface. • Cleaner home screen. The "Tomorrow may drift more" pill under the orb is gone. The card body already says it better. • Honest notification count. The legacy 10am ping is retired. Settings really does mean four daytime pushes now — morning, midday, afternoon, evening — each silent unless your numbers warrant a nudge. • Faster first paint. Today's UV, wind, and noise fill in immediately on first load instead of staying blank.

1.22 widens Drift's view from steps + sleep to every type of movement, fixes sleep fragmentation, and sharpens the daily recap. • Sport-aware drift. Running, cycling, swimming, strength, and mind-body workouts are now scored as first-class signals. A skipped strength week shows up as drift. A bike day no longer reads as a low-step day. The score finally sees what you actually do. • Sleep fragmentation, fixed. Many users will see their sleep score climb. • A sharper evening recap. The recap reads from the drift score itself, so a +50% steps day never gets framed as "drift" — the biggest bad-direction shift becomes the headline. • Cleaner notifications. The master toggle in Settings disables every Drift push, including the 10am daily card. No more stale-content next-day reschedules — if today's window has passed, tomorrow's pipeline writes tomorrow's text. • Subscription gate fix. Onboarding and the paywall used to advance past the trial gate when StoreKit threw an error or you tapped Cancel. Both now correctly stay on the paywall until a real entitlement lands. • New name. Drift is now "Drift: Private AI Health Coach" — same app, more accurately described. Localized per App Store.

1.21 rebuilds Drift's daily rhythm and makes the whole app feel quicker. • Notifications, redesigned around your day. Drift now sends up to four context-aware pushes — a sleep score right after your Watch syncs, a midday drift check, an afternoon nudge with a clock-time deadline, and an evening recap 2.5 hours before bed. All four sit behind a single switch in Settings, on by default, off in one tap. • Faster from launch. Drift starts computing your score the moment your Watch finishes syncing last night's sleep, so it's already there when you open the app. The default baseline window moved from 360 to 90 days for noticeably faster refreshes — the longer window stays available in Settings for anyone who prefers it. • An honest orb. When Drift is recalculating, the orb actually shows it — the fusing-blob animation runs until the live score lands, instead of holding a stale value with a stale arrow next to it. • More places to tap. The "All Patterns" card, the "Today looks like a …" badge, and the Pattern Library all respond across their whole surface now, not just the text. Pattern Library is full-screen with a tidy close button. • Easier-to-read charts. Axis labels and trend headers were dim in dark mode; they're now at full contrast everywhere.

• A living orb. Your Drift score is now visualised as four mesh-coloured blobs that orbit inward and fuse into a single, breathing sphere. When you're well-aligned it shimmers with a quiet constellation; when you're drifting the orb stirs more visibly. Same number, alive on screen. • Time-in-zone, fixed for every sport. Tennis, downhill skiing, snowboarding, rowing, basketball, hockey, racquetball, pickleball, jump rope, gymnastics, dance, and 20+ other activities are now correctly tagged as hard intensity. They were previously bucketed as easy, which skewed the 80/20 zone-training recommendation. • Settings, simpler. Notifications grouped together (Daily Recap, Bedtime, Smart Wake, Live Activity). Baseline merged with On-Device Intelligence into one section. Duplicate subscription row removed.

• Sleep score, now multi-factor. The Longevity sleep pillar used to be duration only. It's now a weighted blend of four research-backed signals: duration (Cappuccio 2010), bedtime regularity (Windred et al., Sleep 2024 — regularity beats duration as a mortality predictor), age-adjusted deep-sleep percentage (Mander et al., Neuron 2013), and night fragmentation (Lim et al., Sleep 2013). • See what's driving it. The Sleep pillar in Longevity has a new "Score Breakdown" section showing each sub-factor's score, raw value, and weight. At a glance you can tell whether duration, regularity, deep sleep, or fragmentation is moving your number. • Age-adjusted thresholds. Slow-wave sleep naturally declines with age, so the deep-% target shifts by life stage — a 25-year-old isn't measured against the same threshold as a 65-year-old.

• Your night, charted. Tap the Sleep score on Drift to see a hypnogram of every stage of last night's sleep, with per-stage breakdowns for Deep, REM, Core, and Awake — plus sleep efficiency, midpoint, time in bed, and interruptions. • Sleep, two ways. The same view is reachable from the Sleep pillar in Longevity — tap "Full breakdown" to drill into the complete session facts alongside your duration trend. • Brighter stages. Reworked the stage palette so Deep is actually visible against the dark backdrop, and each stage card has a proportional fill bar so "53% Core" reads at a glance. • Localized everywhere. Every new sleep label — hypnogram, stages, session facts — translated to all 9 supported locales.

• A clearer offer up front. A new screen at the end of onboarding shows what's behind your Drift Score and Longevity Score, with a 7-day free trial so you can try everything before you decide. • Pricing without the mental math. The yearly plan now shows a "SAVE 30%" badge and the equivalent monthly price right under the headline number — the comparison is obvious at a glance. • Sharper opening. Welcome leads with "Your health has a pattern," then walks from problem to solution in three tight slides. Drift's promise reads the same on every screen. • Walk Through Again, working again. The Settings option to replay onboarding is back in service after an iOS 26 bug had quietly disabled it. Also removed a duplicate review prompt that landed twice in the flow.

• Reimagined onboarding. New "What brought you here?" question personalises the whole flow. Privacy trust beat upfront ("Your data, on your phone"). The first-score reveal now shows your top detected pattern with a full explanation, your score counts up live, and patterns appear one by one. Subtle 3D card-riffle screen transitions. • Bio age, animated. Watch the digits roll from your real age into your biological age, then see which habits (VO₂ max, HRV, sleep, walking speed, exercise) shaped that number, row by row. • Live computation, alive. Particles stream into the orb while Drift reads your data. Calibration feels like real work happening, not a spinner. • Quieter polish. On-device AI now responds in your device language, Ask Drift cards no longer get stuck greyed on cold launch, and a few hardcoded English labels in the longevity intensity mix now translate properly.

• New: Daily Drift recap. Optional pre-bed notification with a one-line summary of today's drift, 2 hours before your usual bedtime. Quick read, time to act. Turn on in Settings → Daily Recap. • Reimagined onboarding. New "What brought you here?" question personalizes the rest of the flow. Live computation now shows your data being absorbed with animated particles, your first score counts up, and detected patterns reveal one by one. Screens transition with a subtle 3D card-riffle feel. • Metric drilldowns redesigned. Tap any metric for a circular gauge that shows where today sits within your typical range, with your usual zone highlighted. Trend charts back the line with your own band; weekday averages spotlight today's day-of-week with your actual value overlaid. • Polish across the board. Intro animation covers the screen from the first frame, chart gradients stay inside their cards, onboarding selection rows are tappable across the whole card, on-device AI now responds in your device language, and bio age reads consistently across the app.