IndexFit for iPhone and Apple Watch

Indy remembers every set, mile and meal.

Indy is the coach inside IndexFit. Tell it what you're after and it writes your lifting, running and calorie plan, checks in after every session, and changes the plan when your week changes.

Download on theApp Store

Free to start. No card needed.

Indy
  1. Morning. You slept 5 h 40 m, so I swapped today's intervals for an easy 3 miles. Squats move to tomorrow.
  2. Plan updated

    Today: easy run, 3 mi

    Was: intervals, 6 × 400 m

    Undo
  3. Can I still lift today?
  4. Yes. Upper body only, and stop each set two reps short.

Tell Indy what you want. It writes the plan.

Getting started is a short chat. Indy asks about your goal, your schedule and anything that hurts, then puts together your lifting, running and calories. Change any part of it before you approve.

  1. What are you training for?

    “Lose 12 lb and run my first 10K.”

  2. How many days a week, and for how long?

    “Five days. 45 minutes, tops.”

  3. Anything I should work around?

    “My left knee doesn't like deep squats.”

Strength

Full body, 3 days

Mon, Wed, Fri · 45 min

Box squats instead of deep back squats, for your knee

Running

First 10K in 12 weeks

Easy run Tue · long run Sat

Long run starts at 2 mi and builds to 6.2

Calories

2,050 kcal a day

150 g protein

Around 1 lb a week

Every card can be edited. Nothing starts until you approve it.

One log for the gym, the road and the kitchen.

Everything you do lands in the same place, so Indy sees the whole week: the heavy squat day, the long run after it, and the pizza in between.

Lifting

The weight goes up when you've earned it.

Log a set in two taps. Hit every rep and the weight goes up next time. Miss, and it holds. New PRs get spotted for you.

Bench Press

3 × 8 · 2 of 3 done

  1. 1135 lb8 reps
  2. 2135 lb8 reps
  3. 3135 lb8 reps

Hit 8 reps on every set to add weight.

Volume
2,160 lb
Last time
130 lb × 8, 8, 7

Running

Runs that fit around everything else.

Start a run on your iPhone or Apple Watch. Indy sets the pace for easy days and long days, and moves runs when your week shifts.

Easy run Tuesday

Distance
3.12 mi
Time
29:04
Pace
9:19 /mi
  1. Mile 19:24
  2. Mile 29:19
  3. Mile 39:12

Food

Take a photo. Get the numbers.

Snap your plate and Indy cuts each food out as a sticker with its calories and protein. In a rush? Just type what you ate.

Chicken rice bowl620 Banana105 Greek yogurt150

Calories875 of 2,050

Protein71 of 150 g

  • Apple HealthWorkouts, heart rate, sleep and steps come in on their own.
  • Apple WatchStart a run or a lift from your wrist and leave the phone in the locker.
  • TikTok and InstagramPaste a workout you saved and get a routine you can actually track.

After every session, Indy checks in.

Finish a workout or a run and Indy compares it with the plan, asks how it felt, and sets up the next one.

Mornings and evenings it looks over your week and moves things when it needs to. Every change comes with an Undo.

Workout check-in

You hit every rep on squats.

How did the last set feel?

Pick one to see what Indy says.

Play your friends every week.

Start a league, send the invite link, and go head to head each week. Lifting volume, miles, training days and PRs all score, with caps so nobody wins on one thing alone. Up to 38 people a league, group chat included.

Week 6 Ends Sunday

You412.6
vs
Sam398.1
Points by category, you against Sam
18,400 lbVolume16,950 lb
9.4 miDistance12.1 mi
5Training days4
2PRs1
Standings
#PlayerW-LPts
1Priya5-12,431
2You4-22,388
3Sam4-22,301
4Marcus3-32,104
5Jess2-41,960
6Dev0-61,412
  • Strength + RunningThe all-rounder.
  • Health + Strength + RunningAdds calories, sleep and resting heart rate.
  • Strength onlyVolume, lifting days and PRs.
  • Running onlyDistance, running days and pace PRs.

Free to start.

Logging workouts is free for your first 3 months. Leagues and your history stay free after that. Pro adds Indy and takes the limits off.

Free

$0

No card needed

  • Log workouts and runs for 3 months
  • Your history, free for good
  • Up to 2 leagues, with group chat
  • Apple Health and Apple Watch sync
  • 7 social imports a month
Get the app

IndexFit Pro

$14.99 a month

Or $99.99 a year, with 3 days free

  • Indy: your plan, check-ins and chat
  • Unlimited workouts and leagues
  • Direct messages
  • Strength projections
  • 100 social imports a month
Try Pro in the app

Students with a .edu email pay $9.99 a month or $89.99 a year. Prices in US dollars. Pro renews until you cancel it in your Apple account settings.

Questions

Something else? Email contact@indexfit.app.

Do I need an Apple Watch?

No. An iPhone is enough. With a Watch you also get heart rate, and you can run and lift from your wrist.

Is there an Android app?

Not yet. IndexFit is on iPhone and Apple Watch.

What does Indy see?

Your workouts, runs, food logs, goals and the Apple Health data you choose to share. The app asks before anything goes to the AI, and you can delete your account and data from Settings. The details are in the privacy policy.

How do leagues score?

Each league picks a format. Points come from lifting volume, distance, training days and PRs, plus calories, sleep and resting heart rate in Health leagues. Every category has a cap, so the most balanced week wins.

Can I cancel Pro?

Anytime. Pro is an App Store subscription, so you manage it in your Apple account settings, and you keep Pro until the end of the period you paid for.

Say hi to Indy.

Free on the App Store for iPhone and Apple Watch.

Download on theApp Store