StockFit for iPhone and iPad
Your strength, quoted like a market.
Every set you log becomes a price. Bench, squat and deadlift trade as stocks, muscle groups roll up into ETFs, and the whole thing sums into one Strength Index you can watch move week to week.
Free to use, with unlimited history. Requires iOS 18 or later.
An illustrative ticker tape of StockFit symbols: muscle-group baskets such as PWR and QUADS alongside individual lifts such as BENCH and SQUAT. In the app every one of these values is calculated from your own logged sets.
- 0
- Servers of ours
- None
- Accounts to create
- Zero
- Trackers and ads
- Never
- Internet required
What it does
A tracker that finally shows you the trend.
Logging sets is the easy part. Knowing whether three months of it actually went anywhere is the part every notes app and spreadsheet gets wrong. StockFit answers it the way a portfolio answers it: with a price, a chart, and a number that either went up or did not.
The portfolio
Thirty stocks, fifteen baskets, one index.
Each tracked lift gets a ticker whose price is your estimated one-rep max for it: BENCH, SQUAT, DEAD. Muscle groups aggregate into ETFs like PUSH and GLTS, PWR holds the powerlifting total, and you can build your own baskets from the lifts you care about.
Every row carries a one-week sparkline and its move, so a glance tells you what is climbing and what has gone quiet.
On the gym floor
Logging that keeps up between sets.
Every row shows what you did last time and how today compares, up, down, or the same, so you are never guessing at the weight. The current set stays framed as you work down the card, rest starts on its own when you tick a set off, and a gold PR badge lands when you beat your all-time best rather than just last week's.
Need to take a call mid-session? Minimize the workout to a bar, do the thing, come back. Nothing pauses behind your back and nothing is lost.
Coverage and estimates
Earnings day, every session.
Each position carries a 52-week range, its volume, and a next-session estimate fitted from your recent sessions with a confidence label. Train it, and the session gets an earnings verdict against that projection: BEAT, MET or MISSED.
It is a trend line, not a training plan, and the app says exactly that, right under the number. What you lift on the day is your call.
The receipts
Every session kept, every week summed up.
Finished workouts keep their full detail: duration, volume, every set, warm-ups marked separately so they never inflate an estimate. History is unlimited on the free tier, because a training log you can outgrow is not a training log.
At the end of the week there is a recap card worth sending to whoever you train with.
And the rest
The unglamorous things, done properly.
Everything here ships in the app. The ones marked StockFit+ need the subscription; the rest are free.
Rest timer that follows you out of the app
Per-set rest times start the moment you tick a set off. Lock the phone and the countdown keeps going on your Lock Screen as a Live Activity, turning green the second it is time for the next set.
Muscle heatmap after every session
Front and back body maps shade by how much each muscle actually took, derived from per-exercise contribution weights rather than a single tag per lift.
A 400-exercise library
Filter by body part or equipment, sorted by what people actually do. Equipment variants are separate exercises, so an incline dumbbell press tracks its own progression.
Price targets
Set the weight you are aiming a lift at and StockFit draws your current pace out to it, with the month you get there. A ring on the card shows how much of the way you are. No date when the trend cannot support one.
Strength Index tiers
Your index climbs a ladder from Penny Stock to the Trillion Dollar Club. Tap your tier on the Dashboard to see every rung, the ones you have passed, and how far the next one is.
Swap in a similar lift
Bench taken? Replace an exercise in a workout, a routine or your history and the closest stand-ins come first, matched by the muscles they work.
Siri and Shortcuts
Start a routine, or ask for your Strength Index, your training week or any stock, by voice. Answered on your iPhone, from your own history.
Routines, supersets and merges
Build routines, drag to reorder, group supersets, and merge two routines into one session when the gym is busy and you have to improvise. Three routines free, unlimited on StockFit+.
Send a routine to a friend
Share as a file, a link, or straight to a nearby phone over peer-to-peer Wi-Fi. Routines travel device to device and never pass through a server.
Warm-up and plate calculators
Work out the warm-up ramp to a target weight, and what to hang on the bar to hit it, without leaving the set you are in.
Training calendar and milestones
A lifetime calendar of every session with streaks and progress photos per day. Index milestones land for everyone, free or not, the moment you cross one.
Cardio and CSV export
Log time, distance and estimated calories alongside the iron. Export a single workout or your whole history as CSV whenever you want it out.
A real Apple Watch app
Start a session on your wrist or mirror the one running on your phone, with heart rate, zones and measured calories from the Watch itself. Log sets, run the rest timer, and sit out a lost connection: the Watch keeps the session and hands it back when the phone is near.
Widgets and the Lock Screen
Home Screen and Lock Screen widgets for your Strength Index and its recent line, your streak, the week so far, and a one-tap start for today's routine. Two more quote your market board and its biggest mover, and those need StockFit+ like the Portfolio itself. All of them read a small summary the app writes for them, so they cost nothing to keep around.
On-device by design
Your training goes to your phone and your own iCloud. Nowhere else.
Not as a setting you have to find, but as the way the app is built. There is no server of ours to send anything to. No account, no email, no sign-in. No analytics SDK, no ad network, no crash reporter of ours, no identifier for advertisers.
Everything the app calculates (every price, chart, estimate, verdict and heatmap) is computed on the device from the sets you typed in. If you are signed in to iCloud, the same data is also mirrored to your private iCloud database, so it is backed up and on your other devices — the same mechanism that backs up Notes, under your Apple Account, which we cannot read and are never sent a copy of. Beyond that, the only things that leave are the ones you deliberately send: a CSV export, or a routine you share.
Read the privacy policyNo account
Open the app and start logging. There is nothing to sign up for.
Works with no signal
A basement gym, a plane, airplane mode: all the same to it. Logging, charts and every number the app derives need no connection at any point.
Backed up to your iCloud, not ours
Your private iCloud database, under your Apple Account. Turn iCloud off for StockFit in Settings and it keeps working, entirely on the device.
Nothing sold, ever
We have no data about you to sell, share or trade.
Yours to take out
Export your full history as CSV, one row per set, whenever you like.
Pricing
Free where it counts. StockFit+ for the analysis.
Unlimited workout history is free and always will be. StockFit+ unlocks the market layer built on top of it.
StockFit
Free
No card, no account, no trial to expire.
- Unlimited workout history
- Unlimited logging, supersets and cardio
- The Strength Index and its chart
- Rest timer, Live Activity and notifications
- The full 400-exercise library
- CSV export and app themes
StockFit+
7-day free trial$4.99/month
or $29.99/year, about half the cost of paying monthly.
The trial takes no payment method and creates no subscription. There is nothing to cancel.
- The full portfolio: every lift stock and muscle-group ETF
- Custom baskets built from the lifts you choose
- Next-session estimates and earnings verdicts
- Allocation, rotation and breadth analysis
- Post-workout muscle heatmap
- Lifetime training calendar and progress photos
- Per-exercise progress charts and unlimited routines
- Routine sharing, warm-up and plate calculators
Prices in USD. Apple sets the local equivalent in other storefronts, and the price shown in the App Store at purchase applies. Both plans are auto-renewable subscriptions charged to your Apple Account, renewing unless cancelled at least 24 hours before the period ends. Manage or cancel in Settings ▸ your name ▸ Subscriptions. Refunds are handled by Apple. See the Terms of Use for the full subscription terms.
Start pricing your progress.
Log one session and the market opens. Log ten and you will know, for the first time, exactly which way your training is going.
StockFit is a fitness tracker made by Summer Labs LLC. The stocks, ETFs, index, earnings and estimates are a visualization of your own logged training. They are not securities, investments or money, and nothing here is financial advice. StockFit is not a medical device and does not provide medical or health advice. Consult a qualified professional before starting a new exercise program.