TriAI: Triathlon Training
Sprint · Olympic · Half
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Your first triathlon is three sports in one morning — swim, bike, and run. If you're not sure you can do any of the three yet, you're exactly who TriAI is built for.
Answer four questions — distance, race date, experience, and weekly hours — and TriAI builds a plan across all three sports, right on your device. Then it opens to the one thing that matters: today.
ONE SCREEN. TODAY'S WORKOUT.
No dashboard to decode. Open the app and see exactly one thing: today's session, colour-coded by sport, with a one-line "why this workout" so you know it counts. Finish it and it shows up as a green check, straight from Apple Health.
PUSH IT TO YOUR APPLE WATCH
Every workout sends to your Apple Watch as a real, structured session — warm-up, intervals, cool-down — tapping you through each step on your wrist. No Watch? Follow every workout right in the app.
A COACH THAT CHANGES YOUR PLAN
Tell your coach "I'm wrecked this week" and it answers in a sentence — then actually edits your week: fewer sessions, a rest day, your taper protected. Jot a note on a workout and the coach can factor this week's notes in too. It is a real AI coach, kept conservative: it never spikes your weekly volume, it protects your taper, and if you mention anything like chest pain, dizziness, or fainting it tells you to stop and see a doctor. It gives training guidance, not medical advice — always consult a physician before starting a program.
EVERYTHING A FIRST-TIMER IS SCARED OF, EXPLAINED
Plain-language guides: what a brick workout is, your first open-water swim, beating swim panic, setting up a transition so you don't lose your bike, taper week, and race day.
RACE HUB
A countdown to race day, race-week mode, a race-day checklist, a race-morning timeline you can screenshot, an editable packing list, and a race-readiness gauge — a word, not a fake number.
BUILT FOR YOUR FIRST ONE — OR YOUR FIRST HALF
Sprint, Olympic, and Half distance (a 1.9 km swim, 90 km bike, and 21.1 km run). Plans run 8 to 20 weeks depending on distance, date, and your time. "Plan by Time" is the default: clean durations like a 45-minute swim, effort in plain words — easy, steady, strong — no pace or zones to decode. Prefer distances? Flip one switch in Settings.
NO STREAKS, NO SHAME
A missed day just reads "here's today." Your finishes collect on a trophy shelf, and you earn milestone moments — first brick, first open water, taper day, race week — never streaks to guilt you.
FREE TO START
Your full plan preview, the first two weeks, three coach messages, and all the guides are free forever. TriAI Pro unlocks the rest.
PRICING
TriAI Pro unlocks your full plan to race day, unlimited Watch push, the AI coach, the full Race Hub, and full stats. Pick how you'd like to pay:
- TriAI Pro Monthly — 1 month — $12.99 / month
- TriAI Pro Annual — 1 year — $89.99 / year
- TriAI Pro Forever — one-time — $199.99, yours forever
All three unlock the same features. Monthly and Annual are auto-renewing subscriptions: payment is charged to your Apple ID at confirmation of purchase, and each renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. TriAI Pro Forever is a single $199.99 purchase — it never renews. The coach includes up to 60 messages a month for your first six months, then 30; the free tier includes 3. Unused messages don't roll over.
YOUR DATA STAYS YOURS
Your plan lives on your device — no account required. TriAI reads only your completed workouts from Apple Health to check off your plan; it never uses Strava data. The coach only ever sees a short summary of your week and what you type, never your raw health data.
Not affiliated with, or endorsed by, USA Triathlon, Apple, or any race organizer.
SUPPORT & LEGAL
Email: help@triai.app
Web: https://triai.app/support
Privacy Policy: https://triai.app/privacy
Terms of Use (EULA): https://triai.app/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixes a display bug where text could be unreadable depending on your iPhone appearance setting.
The developer, Lance Merrill, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lance Merrill
- Size
- 14.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- TriAI Pro Annual $89.99
- TriAI Pro Monthly $12.99
- TriAI Pro Forever $199.99
- Copyright
- © 2026 Tundra Industries