A premium habit OS for health

We don’t track habits.
We tune them.

AI-generated daily plans, real-time tuning when life shifts, and one number that tells you how it’s all working together. Works with just your iPhone — no wearable, no extra device required.

Today’s harmony
93
Excellent
Sleep held the day back · 19/25
Workout · Excellent30 / 30 pts
Recovery and load in balance.
Yesterday's session counts in full. Training and rest are in rhythm.
Keep the rhythm — today's session is already on the plan.
Yesterday's sessionFull breakdown →
Today’s harmony
93
Excellent
Sleep held the day back · 19/25
Workout · Excellent30 / 30 pts
Recovery and load in balance.
Yesterday's session counts in full. Training and rest are in rhythm.
Keep the rhythm — today's session is already on the plan.
Yesterday's sessionFull breakdown →
How it works

Every morning, the loop runs again.

Habit Tuner doesn't just log your data. It reads it, analyzes it, generates today's plan, briefs you, and adjusts mid-day when life changes the equation.

Ingest.

HealthKit pulls sleep, training, nutrition, recovery — overnight.

Analyze.

Readiness, fatigue, recovery signals — turned into one harmony score.

Plan.

Workout, cardio, nutrition, hydration, supplements — drafted for your day.

Brief.

A morning briefing in plain language — what to do, why, what changed.

Adjust.

Skipped lunch, late workout, short night — plan retunes in real time.

Real-time tuning

The day, tuned as it happens.

Other apps log what went wrong yesterday. Habit Tuner adjusts your plan now — when your knee hurts mid-workout, when lunch gets skipped, when last night's sleep wasn't what you hoped for.

Vignette · 0110:42 AM

The workout tune.

“My lower back's tight on these. Can we swap?”
Plan adjusted
Reverse crunch → Dead bug. Same core focus, no spinal load. The rest of your session continues.

No restart. No new plan. The next exercise loads with the swap already applied.

Vignette · 021:50 PM

The fuel tune.

“Skipped lunch — got caught in a meeting.”
Plan adjusted
Dinner protein target raised by 18g. Afternoon snack suggested by 3pm to stabilize energy before the workout.

No guilt. No "you missed a meal" framing. Just a recalculated path forward.

Vignette · 037:15 AM

The recovery tune.

Sleep logged at 5.4 hours. Harmony dropped to 48.
Plan adjusted
Heavy strength → Mobility + Zone 2 cardio. Hydration target +20oz. Caffeine cutoff moved earlier.

Today doesn't have to be your hardest day. Tomorrow can be.

Works with what you have

No wearable. No extra device.

Every other premium habit app requires you to buy a $200–$2,000 wearable. Habit Tuner works with the iPhone already in your pocket.

iPhone
Primary device · iOS 17+
Required
Apple Watch
If you have one — adds richer sleep and workout data
Optional
Apple HealthKit
Auto-imports sleep, steps, and workouts
Optional
Manual logging
Always available · full parity for every metric
Available
The honest version

Use what you already own.

Wearables can add data, but they shouldn't be the price of entry. If you have an Apple Watch, we'll use it. If you don't, your iPhone has everything we need to tune your day.

01 · Home

Your day, already drafted.

Open the app and see today's plan — workout, meals, hydration, supplements — already laid out based on yesterday's data. No setup, no decisions before coffee.

Morning briefing in plain language
Coach Tune at 9 AM, noon, and 5 PM
Quick actions for log, hydration, workout
Today's plan
Abs Day — core strength.
Coach window open
Tune today's plan?
Habit Tuner home screen showing today's drafted plan
02 · Harmony score

One number, every day.

Your Harmony Score reflects how well sleep, nutrition, hydration, and training are working together — not as separate metrics, but as one balance.

Four tiers · Needs Care → Caution → Good → Excellent
Updates throughout the day as you log
Trend visualization across week, month, year
Today
Best score this week.
Harmony
88
Excellent
Habit Tuner Harmony score screen with weekly trend
03 · Log

Capture the signal, not the friction.

Log meals four ways — barcode scan, photo recognition, USDA search, or manual entry. Track hydration with a single tap. Your Food Vault remembers what you eat most.

"Tell me what to eat" — coach suggests, you confirm
Describe, capture, scan, or search USDA
Vault saves favorites for one-tap re-log
AI · recommended
Tell me what to eat.
Six ways
Describe, scan, search, save.
Habit Tuner meal logging screen showing capture options
04 · Reports

Data you can act on, not just look at.

Weekly, monthly, and yearly views of your harmony trend, nutrition averages, workout consistency. Written like a briefing, not a spreadsheet — and every report exports as a six-page PDF, assembled on your device, that reads the same on paper.

Editorial framing · "You hit protein 6 of 7 days"
Visualizations across Fuel · Rest · Work · Hydration
Export as PDF · the week, the month, the year, day by day
Week avg
86
Excellent
Protein
3 of 3 days hit.
Habit Tuner Reports screen showing weekly trend visualization
05 · Workout

Your coach swaps the exercise when your back acts up.

AI-generated workouts with exercise videos, form cues, and real-time tuning. Mid-session, tell your coach your back's acting up — it swaps the exercise without breaking the plan.

Exercise videos and form cues built in
Mid-workout tuning · swap, lighten, or rest
Manual workouts: yoga, runs, climbs, anything
Now playing
Reverse crunch · 3 sets.
Tap tune, mid-set
Swap, lighten, or rest.
Habit Tuner Workout screen with exercise video and form cues
Siri · Apple Intelligence

Say it.
It’s logged.

Habit Tuner is integrated with Apple Intelligence. Water, a meal, a set, a swap — or your whole morning check-in — by voice, without opening the app. Every phrase runs on your iPhone through Apple’s App Intents, so what you say becomes a log the same way a tap would.

  • “Hey Siri, log water in Habit Tuner”· asks how much, confirms the total
  • “Hey Siri, log a meal in Habit Tuner”· describe it, or name a saved meal
  • “Hey Siri, log a set in Habit Tuner”· pounds and reps, mid-workout
  • “Hey Siri, swap this exercise in Habit Tuner”· the coach proposes, you approve
  • “Hey Siri, tune my day in Habit Tuner”· only asks what the app doesn't know

Ten phrases, plus Control Center buttons for water and workouts. No audio reaches us — Siri’s speech stays with Apple; only the result is written to your account.

The Harmony Score

Four tiers. One honest read.

Most apps give you ten metrics that contradict each other. Habit Tuner gives you one — and a tier that tells you what kind of day it is.

0 – 49
Needs care.
Recovery is low or signals are off. The plan softens, the briefing shifts to rest, and we ask less of you today.
50 – 69
Caution.
Signals are mixed. Stay the course — log honestly, hit hydration, prioritize sleep. Tomorrow likely climbs.
70 – 84
Good.
Sleep was solid, fuel was on point. Push the workout, push protein. Days like this build the streak.
85 – 100
Excellent.
Everything is aligned. The plan opens up. The hardest session of the week probably lives here.

Built from four pillars.

Your harmony score is four pillars out of 100 — training, nutrition, sleep, and hydration — each earning its own points from what you actually logged. The weights follow your goal: strength and muscle gain lean on training and nutrition; fat loss shifts the weight to nutrition (40) and eases training (25).

The ring shows every pillar on its own arc, so you can see which one held the day back.

Sleep25 pts
Training30 pts
Nutrition30 pts
Hydration15 pts
The morning briefing

Read it, then live the day.

Every morning, Habit Tuner writes a one-paragraph briefing in plain language — what happened yesterday, what changed, what to do about it today. No scrolling through metrics. No dashboards. Just a paragraph and a plan.

Wednesday · May 27 · Your briefing
Sleep was strong — push today.

You logged 8 hours last night, well into recovery range. Hydration hit 140 oz yesterday — comfortably above target. Protein has landed every day this week. The plan: lean into Abs Day and keep the core session focused while recovery is high.

Harmony88
TierExcellent
PlanAbs Day
Pricing

No tiers. No ceiling.

One plan, everything in it. Nothing held back behind an upgrade, no decision to second-guess.

All subscriptions are billed through Stripe. Cancel anytime — no questions, no friction.

After sundown

Built for the way you actually use it.

A serious dark mode designed from the ground up — not just a tinted screen. Quiet contrast, calmer color, the same editorial moments that work at 7am still work at 11pm.

Designed dark-first, not auto-converted
Follows your iOS appearance setting automatically
OLED-friendly · easy on the eyes when logging at night
Tonight
Quiet hours, active.
Tomorrow
Plan at sunrise.
Habit Tuner in dark mode showing Quiet Hours — tuning paused for the night
Frequently asked

Questions before the first tap.

Most apps track. Habit Tuner tunes. We don't just show you yesterday's calories or sleep hours — we use them to generate today's plan, then tune the plan throughout the day as you log. You don't need to interpret the data. The app does.
No. We never sell, share, or monetize your data. The app is offline-first — your device is the source of truth, the cloud is only for backup, sync, and AI orchestration. Read the full privacy policy for specifics.
No. Habit Tuner works with just your iPhone — no wearable required. If you have an Apple Watch, we'll use it for richer sleep and workout data. If you don't, every metric has a manual fallback or auto-imports through HealthKit. The iPhone in your pocket is enough.
Yes. HealthKit is the primary data source — sleep, workouts, weight, nutrition all flow in automatically. Manual fallbacks exist for every metric if you don't use HealthKit or want to override a value.
The core app — logging, viewing plans, tracking — works offline. AI-generated briefings, plan generation, and mid-day tuning require connectivity. Everything you log offline syncs automatically when you're back online.
No. Harmonized is the only plan, and everything in the app is in it — the daily loop, AI workouts with mid-workout tuning, every way of logging a meal, coaching through every guidance window, reports with PDF export, and the Siri phrases and Control Center controls. Nothing sits behind an upgrade.
Yes, anytime. Sign into your account portal at habittuner.com to cancel. You'll keep full access through the end of your current billing period. No retention emails, no friction.
Not at launch. Habit Tuner is iOS-first because the HealthKit integration is deep — we use it as the primary data source, not just an import. Android support will follow once iOS is stable and we've validated the model.
Habit Tuner is not a medical device and not a substitute for a doctor, RD, or trainer. The AI coach generates suggestions based on your logged data. You're always in control — you can reject any suggestion, override any plan, and we make it clear when AI is reasoning vs. when something is data-derived.