Multisport AI fitness coachiPhone and Apple Watch
Talk to it like you would to a real coach. Kratheos builds your plan, evolves it after every workout and guides you live on iPhone and Apple Watch. And the final say is always yours.
No endless questionnaire, no generic plan to download. One conversation, then a plan that lives with you.
Your goal, your level, your gear, your schedule. Just like with a real coach, in a few messages. It pre-fills, you correct, nothing is saved without your OK.
A plan in blocks of 3 to 6 weeks, fitted to your real week. It explains why every workout is there and what it builds toward.
Every set, every pace, every feeling counts. Loads and paces progress on their own; big changes are suggested to you, never forced.
Tell it your goal the way you would tell a coach. It understands, rephrases and suggests a plan you can talk through.
Text or voice. The coach asks the right questions, one at a time.
It pulls your benchmarks from the chat into a form: you correct, you confirm. Nothing is saved before that.
Base, build, specific, taper, race day. Every workout has a reason to be there.
Your preferences, gear and constraints become rules it sticks to.
You: I want to do a Spartan Race in July.
Coach: Great goal. Are you already training? Tell me what you do right now.
You: Squat 80 kg on Mondays, 5 km run on Thursdays.
Coach: Got it. I’ll build you a plan in blocks: strength and endurance, with a rest day between two hard workouts.
Your plan comes to life during the workout. iPhone and Apple Watch stay in sync, and when the watch is there, it’s the source of truth.
See what’s planned and what you did last time. Log what you actually did in two taps.
+30 s or skip: the timer follows your pace, the watch taps you at the right moment.
On your wrist, live. Intervals tell you whether you’re on target.
Too heavy, too easy, machine taken, discomfort: the coach takes it into account next time.
No watch? Everything works on iPhone alone too.
Intervals: pace on target
HIIT: timed rounds
End-of-workout summary
Every logged set feeds your curve. Loads and paces climb on their own, at the right rate, and you see exactly what changed and why.
98.2 kg
Squat, estimated 1RM
+11%
4:19 /km
Interval pace
-14 s/km
16 wks
Of prep, in 4 blocks
Strength and endurance in one plan, without one sabotaging the other. The coach spreads the fatigue across your week.
Sets, loads, double progression.
Target paces, intervals, endurance.
Elevation, grade-adjusted pace.
Heart rate zones, long rides.
Pool sets, technique.
Timed rounds, short efforts.
Volume, stamina, mountain prep.
Recovery, flexibility, core.
Kratheos suggests, explains, warns. But it’s your body, your schedule, your life. When you say no, the coach adapts, without pushing.
Every suggestion comes with its reason and its consequences.
Accept, decline, edit: nothing structural changes without you.
Your decision becomes a rule. It won’t ask you again.
Move intervals to Tuesday 6:30 am
To keep 48 h between your two leg workouts.
You: No, never before 7 am. I’d rather keep it on Thursday.
Coach: Got it. I’ll keep it on Thursday and lighten Wednesday’s leg work a bit to compensate.
Build your plan, train and track your progress without paying. Premium sells the automation: the AI coach follows your plan and adjusts it for you, hassle-free.
Free
Everything you do yourself, with no time limit.
Premium
You train, the coach takes care of the rest.
Pricing announced at launch, first to the waitlist.
Kratheos works like a coach: it learns your goals, history and constraints, builds your plan and adjusts it after every workout. It doesn’t make medical diagnoses: if you have pain or a health condition, it will refer you to a health professional.
Strength training, road running, trail running, cycling, swimming, HIIT, hiking and mobility. You can combine them in one plan: the coach balances the load between strength and endurance.
No. Every workout can be followed on iPhone. With an Apple Watch, you keep sets, rest, heart rate and intervals on your wrist, and the watch is the source of truth.
You always have the final say. The coach explains the consequences of your choice, then adapts and remembers your decision as a rule going forward.
Everything you do yourself is free: creating your workouts and your plan, training on your phone and Apple Watch, tracking your history, charts and badges. The Premium subscription sells the automation: the AI coach generates your plan, progresses your loads and paces and adapts it when life gets in the way. Pricing will be announced at launch, to waitlist members first.
Kratheos is coming to iPhone and Apple Watch first, then Android. Join the waitlist to hear the moment it opens.
Your training data is used only for your coaching. You can export it, or delete your account and all your data from the app, at any time.
Sign up to be among the first to try Kratheos on iPhone and Apple Watch. One email at launch, no spam.
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