Coming soon · iOS & Apple Watch

Training plans built
on your measured
fitness.

The indie running coach for iPhone and Apple Watch. It measures your VO2 MAX from your own runs, builds the plan to your race day, and retunes every pace as you train. Voice cues on the sessions that need them. A plan that pauses when life does.

Launching mid-October.

One email at launch. Nothing else, ever.

How it works
Training calendar: the week's runs, each with its pace, and the completed interval session beside its plan
Plan tab: Boston Marathon in 194 days, the goal and the predicted time, and the State of Training wheel
Workout detail: Cruise 1000s times 5, each step with its own pace
On your wrist

The whole workout, on your Apple Watch.

Why Not comes with its own Apple Watch app. Open it and today’s workout is there: the steps, the pace, and the coach’s cues on your wrist. Leave the phone at home. The run lands in your plan when you get back.

  • Every workout from the plan, with each step in order and the pace it asks for
  • Pace, distance and time on the wrist, the step pill telling you where you are
  • Units, voice cues and pace alerts set once on the phone, followed by the watch
Why Not on Apple Watch: the week’s miles, the race countdown and today’s 6 mile tempo run
Today’s workout
Run complete on Apple Watch: the time, the average pace and the average heart rate
Run complete
From the founder

My first marathon was Boston 2023. I ran 4:45 and was wrecked. Three years later, Boston 2026, I came back and ran 3:20. Every running app I tried along the way was charging $120 to $150 a year for what's basically a generated plan and a stopwatch with voice cues. So I built the alternative: same training engine, for less.

Bobby · Founder, solo developer
Bobby, founder of Why Not
1
Developer
$0
Investor money
0
Data sold
$79.99
Per year
WHY NOT
LACE UP. WE'VE GOT THE REST.
The coach

It measures you first. Then it adapts.

Your VO2 MAX comes from your own runs: seven qualifying runs already in Apple Health, or two weeks of running as you normally would. Every pace in the plan follows it, and the coach retunes it as your runs come in.

State of Training: VO2 MAX 45.9, trending on pace for the goal, 28 weeks to race day, plan health on track
Measured, not guessed.
Coach suggestion: your fitness is ahead of schedule, easy pace 8:49 to 9:49 becomes 8:31 to 9:31 a mile, based on your last 5 runs
It adapts to your runs.
A tempo session step by step: a mile warm up at 9:19, then 1000 metre cruise intervals at 7:20 with 60 second rests
Every step at your pace.
Plans we cover

Every distance. Every level.

Pick a goal. We build the plan, to your race day and your measured fitness. Couch to 5K through a 50K ultra, and your HYROX race too: same engine, same subscription.

🏋️
HYROX training plan
8 km of running and 8 stations, every load your division's. 2 to 16 weeks to your race, from a running coach.
See the plan →
🏃
Couch to 5K
8 or 12 weeks · 3 to 6 days a week
⚡
5K and 10K
8 to 20 weeks, to your race day
🎯
15K and 10 Mile
Their own plans, 8 to 20 weeks
🏁
Half Marathon
8 to 20 weeks · 12 recommended
🏔️
Ultra (50K)
8 to 20 weeks · long runs to 26 miles
🔥
Get Faster
8 to 14 weeks · 5K and 10K speed
💤
Back from a break
6 weeks, eased back in
🧠
Stay moving
8 to 20 weeks, extend any time
⏱️
No race time yet: we measure you first.
Seven qualifying runs already in Apple Health and your VO2 MAX is ready at once. Otherwise two weeks of running as you normally would, then your plan takes your real number.
After every run

The read: the plan versus you.

Finish a run and the coach tells you how it went, in plain words. Right on plan. Faster than planned. Cut short. You listened to your body. Then the detail.

  • Each rep against its target, and the whole run against the session
  • Your readiness that morning, and what the run did to your week
  • A fitness line when the run moved your number, and the trophy if it earned one

The read is part of premium. Every run still saves its card on the free tier.

The read after an interval session: Right on plan, reps averaged 6:20 a mile against a target of 6:21, each rep listed
Start with your race

Pick the race. The plan ends on race day.

258 races in the list: the World Marathon Majors first, then the big races, then every race by month. Search by race, city or state, or tap Near me.

  • A race that has not announced next year’s date shows its usual day, marked estimated, and your plan moves when the date is announced
  • Near me finds the races within 250 miles. Your location is never stored, sent or logged
  • Not in the list: add your own race, any distance from a mile to 100 km
MajorsBig racesBy monthNear meAdd your own
Choose your race: search, the Near me chip, and the World Marathon Majors with confirmed and estimated dates
Share it your way

Finish a run. Pick a sticker.

Transparent stickers for your own photo: the stats, the route, the splits, the shape of the session, the trophy, the plan. Each one only when the run has the data for it.

  • Instagram Story, Copy to Clipboard, Text Message, Save, or More
  • Your workout’s colour as the accent, your units, the run’s own numbers
  • Free. Every finished run gets the sheet.
SimpleTrophyStatsSession shapeRouteSplitsPlan
Share this run: a grid of transparent stickers (stats, reps, route, splits, plan) and the five share keys
The trophy room

Earned, not given.

Milestones minted in metal: the first hundred miles banked, the perfect week kept, your calibration number, race day survived. No confetti physics. Hardware. The ones you haven't earned yet stay in the case, ghosted, waiting.

Longest run trophy13.1
LONGEST
The farthest you've gone
The First Hundred trophy100
The First Hundred
One hundred miles banked
VO2 Max calibration trophy44
VO2 MAX
Your measured number
Race week trophy, not yet earned
RACE WEEK
Still waiting for you
The rest of it

A real coach. No middlemen.

Built around how runners actually train, not how subscription apps want you to. Every feature is here because it earns its place.

🔒

Your data stays yours

No ads. No analytics SDKs. No leaderboard you didn't ask for. Your runs and routes live on your phone. Your account keeps a copy of your plan, PRs and stats for a new phone, and none of it is ever sold.

🎙️

Voice cues when they count

Tempos, intervals and any session with steps: the coach speaks each step and calls your pace when you drift more than 20 seconds a mile. Easy and long runs stay quiet on purpose.

🛡️

Pause when life happens

Sick, hurt, travel week: pause your plan for 1 to 14 days and pick up where you left off. On a race plan the race date stays put.

🎛️

You drive the plan

Weekly miles from 5 to 120, paces a notch faster or slower, your run days and long run day, the plan length. Every two weeks the coach checks in and asks whether the plan still fits.

❤️

Garmin, Suunto, COROS, Polar: welcome

Any watch that writes to Apple Health lands its runs in your plan, and your whole running history counts toward your PRs and lifetime miles. A Garmin, Suunto, COROS or Polar run that has not synced yet gets a quiet nudge.

📖

The Help guide, inside the app

38 answers in 8 categories, searchable as you type, from the first plan to the free tier. When the guide is not enough, a filled-in email to a real person at support@whynot.run.

The plain comparison

The numbers, side by side.

Here is what Why Not costs and what you get, in plain figures. Hold any other app up against it. Decide for yourself.

Other coaching apps
Free trackers
Why Not
Annual price
Varies by app
Varies by app
$79.99 / year
Monthly option
Varies by app
Varies by app
$9.99 / month
Free trial
Varies by app
Varies by app
✓ 7 days, for a first subscription
Cancel any time
Varies by app
Varies by app
✓ In your iPhone’s Settings
Who builds it
Varies by app
Varies by app
✓ One developer, no investors
Your watch
Varies by app
Varies by app
✓ Its own Apple Watch app, and any watch that writes to Apple Health
Pause your plan
Varies by app
Varies by app
✓ 1 to 14 days, the race date kept
Without a subscription
Varies by app
Varies by app
✓ Plan, today’s run, GPS, watch, stickers, trophies

Other apps’ prices and features change, so their own listings are the place to check them. Why Not’s prices as listed in the App Store, in US dollars.

How it works

Four steps. No fluff.

Onboarding takes about 2 minutes. Sign in with Apple, tell the app your goal, and run. Your account keeps a copy of your plan and your stats, so a new phone picks up where you left off.

01

Tell us your goal

Pick your race from the list, or a goal: get faster, start from zero, come back from a break, stay moving, build to a 50K, or train for your HYROX race. We build the plan.

02

Connect Apple Health

Optional but recommended. Seven qualifying runs already in Health and your VO2 MAX is ready at once; otherwise two weeks of running as you normally would. Garmin, Suunto, COROS and Polar runs land here too. Your heart rate and routes stay on your phone.

03

Open the app, tap Start

Today's workout is on the home screen and on your watch, each step at its pace. The sessions with steps get the voice. The easy days stay quiet.

04

Read the run. Adjust. Repeat.

After each run, the read: the plan versus what you ran. Rate it, and when your runs say so the coach retunes your paces and your plan moves with them.

Questions, answered honestly

FAQ

Three real differences:

Architecture. Solo developer. Not VC-backed, not acquired, not a shoe company's marketing arm. The whole app fits in one person's head.

Philosophy. No ads, no data selling, no social feed obligation. Your runs and routes live on your phone, and your data is never sold.

The coach. Your paces come from your measured VO2 MAX, not from a level you picked. After every run the read tells you how it went, and the coach retunes the paces when your runs call for it.

Price. $9.99 a month or $79.99 a year, 7 days free first. If price isn't your concern, the first three reasons matter more.

Your first plan, today's workout, GPS runs on the phone, the Apple Watch app, the trophy room and the share stickers. Premium adds the read after every run, the coach's pace changes, the full calendar and plan controls, your VO2 MAX and State of Training, pause, and the run detail with splits and the map. 7 days free first, then $9.99 a month or $79.99 a year.

Plans are built and run on your phone, and your runs live there too, so your training history stays yours. Our servers sign you in and keep a copy of your plan and stats for a new phone. I have no plans to disappear.

You get a full 7-day free trial when you sign up for the first time. Pick monthly ($9.99) or annual ($79.99) at signup, and Apple won't charge you until day 7. Cancel any time during the trial in your iPhone's Settings, Subscriptions, Why Not, and you pay nothing.

Yes. Cancel through your iPhone's Settings, your name, Subscriptions, Why Not, Cancel Subscription. You keep full access until the end of your current paid period. After that the app runs on its free tier: your plan, the day's workout and the run tracker stay, and the other features wait for a subscription.

258 races are, the World Marathon Majors first: Tokyo, Boston, London, Sydney, Berlin, Chicago, New York and Cape Town, plus the big city races and every race by month. If yours is missing, add it with its date and distance and the plan builds to it the same way.

Because the moment you raise venture capital, the entire product roadmap reshapes around growth. Features get added because they justify a Series A, not because runners need them. Prices creep up because investors need ARR growth. I'd rather build the small profitable indie running app than the next subscription monster.

Why Not comes with its own Apple Watch app: today’s workout on your wrist, with each step, the pace and the coach’s cues, and the phone can stay home. You don’t need a watch, though. The app works with the phone alone: pace from GPS, voice cues in your headphones, the steps on screen. Garmin, Suunto, COROS and Polar runs come in through Apple Health.

No, on purpose. Tempos, intervals and any session with steps get the voice: each step as it comes, and a pace call when you drift more than 20 seconds a mile from the target. Easy runs and plain long runs stay quiet, because that is the point of them. You can switch to buzz only on the watch, or off.

iOS first, with the Apple Watch app. Android is on the roadmap, with no date to promise yet.

If we ever change pricing, Apple requires us to notify existing subscribers in advance and give you the option to cancel before the new price takes effect. There's no investor pressuring me to bump prices to hit a number, so the honest answer is: not anytime soon.

Both. Plans cover Couch to 5K all the way to a 50K ultra. Same engine. A first-time half marathoner and a runner chasing a sub-3 marathon both use the same app. The plan just looks different for each of them.

WHY NOT.

indie. iphone-native. runner-built.
7 days free $9.99 / month $79.99 / year

Launching mid-October.

One email at launch. Nothing else, ever.

Why Not is not affiliated with or endorsed by HYROX. HYROX is a trademark of HYROX World GmbH. Apple Watch and Apple Health are trademarks of Apple Inc.; Garmin, Suunto, COROS and Polar are trademarks of their owners. Why Not is not affiliated with or endorsed by them: their watches' runs reach Why Not through Apple Health.