Log a workout in under 10 seconds. Snap a daily progress photo. Watch green dots fill your calendar as the habit sticks.
<10s
To log a workout
656
Exercises
1/day
Progress photo
Built for iOS 16+
Private by default
Zero third-party tracking
HealthKit compatible
Apple Watch on roadmap
What's inside
Everything you need. Nothing you don't.
01 - Consistency
Watch your streak grow day by day
Log workouts, meals, photos, and moods on the same calendar. Green dots fill your month as the habit sticks, free forever.
02 - Speed
Log a workout in under 10 seconds
656 exercises across 12 activity types. Pick your workout, tap your sets, done. The fastest logging in any fitness app.
03 - Privacy
Your progress, locked behind FaceID
Take one photo a day. Ghost overlay shows change over time. Every image is FaceID-locked on your device. No cloud, no social, just you.
04 - Intelligence (Premium)
AI that trains around your recovery
A live muscle-group map shows what’s ready. AI builds plans that respect your fatigue, your goals, and your schedule. Available on Plus, Pro, and Max plans.
Calendar-First
The calendar is the app.
Workouts. Meals. Photos. Moods. Every day lands on the same date so consistency is something you can see, not just feel.
One screen, one source of truth.
Tap any date to see the workout you did, the food you logged, the photo you took, and the mood you noted.
Streaks that count what matters.
Green dots fill the month as you show up. Miss a day; the next one is just as easy to start.
An honest record, not a highlight reel.
Your calendar is private by default. You decide what becomes public.
Training & Recovery
Train smarter without thinking harder.
Recovery Map
See which muscles are ready to train
656 Exercises
Searchable library with step-by-step instructions
Pro
AI Workout Builder
Plans that respect your recovery state
Workout Logging
Log a session in under 10 seconds
12
Activity types
656
Exercises
Live
Recovery map
AI
Adaptive plans
AI Form Check · Premium
An AI coach that watches your form.
Prop your phone, hit record. The camera reads your squat, deadlift, and bench in real time and tells you what to fix, set by set.
On-device, on the iPhone you already own.
Uses the camera and Apple's Vision framework. No extra hardware, no special studio.
A real form score, not a smiley face.
Per-rep feedback on depth, bar path, knee tracking, and lockout, with a session score you can chase.
Built for the lifts that matter most.
Squat, deadlift, and bench at launch; more compounds rolling out.
AI Form Check is training guidance, not medical advice. If something hurts, stop and talk to a qualified professional.
Demo composite
Form score92
Real-time form analysis runs in the iPhone app. Live capture coming to the website with the next App Store update.
AI Nutrition
Log a meal the way you'd describe it.
01
Describe your meal
Type what you ate in plain English. "Chicken burrito bowl with rice and guacamole." No barcodes. No endless searches.
02
AI breaks it down
StayFit estimates calories, macros, and micronutrients in seconds. Every result is editable before saving.
03
Confirm and track
Adjust anything that doesn’t look right, then save. Your daily totals update instantly on your dashboard.
Snap a photo and let AI analyze it. Scan a barcode. Type in plain text. Three ways to log.
Try it now
Type a meal. See the breakdown.
Estimates only. Always confirmable, always editable, never automatic.
Progress Photos
Progress you can see, locked behind FaceID.
One photo a day. A ghost overlay to match your pose. A time-lapse that turns months into thirty seconds.
One a day. No filters.
Quick capture, consistent angles. A ghost overlay shows your last photo at 30% so today's pose lines up.
Before & after, side by side.
Pick any two days. See the change without the bathroom-mirror discount.
Yours alone.
Every photo is FaceID-locked on your device. No cloud, no social, no “we noticed you uploaded…” emails.
StayFit tracks progress, not perfection. Non-Scale Victories are first-class on every screen.
Analytics · Pro
Your progress, in data.
Five chart types that turn every logged workout into a story about where you started, where you are, and what to do next.
Strength progression
Every working set, every lift, plotted over time.
Volume heatmap
Calendar tile colored by session volume. Spot under- and over-training at a glance.
Muscle frequency
How often each muscle group sees real work this week and month.
Macro trends
Protein, carbs, fat, calories. Moving averages, not just yesterday.
1RM progression
Estimated one-rep max for each main lift, trending with your training.
Available on
Pro & Max plans
The full analytics suite ships in the iPhone app on Pro and above. Free and Plus users see basic charts on every workout screen.
Gentle reminders, streak protection, rolling trends, and data you can export. A calm set of essentials that respect both your recovery and your attention.
Daily reminder
A gentle nudge to log your workout, photo, or meal before the day ends.
Streak freeze
Life happens. Pro and Max plans include streak freeze so one rest day won’t break your chain.
8-week trends
See your consistency, volume, and body measurements change over rolling 8-week windows.
CSV export
Your data is yours. Export your full workout history, measurements, and nutrition logs anytime.
Start free. Upgrade when you want more.
The free plan is genuinely useful. Paid tiers add AI coaching, advanced analytics, and unlimited everything when you're ready.
Apple Watch on roadmap
