Sparkyour AI coach · says hi 👋
Genetic · Bloodwork · AI Coaching

Train with your biology — guided by AI.

Hey, I'm Spark. I turn simple conversations into personalised workouts, read your genes & bloodwork, keep you on track, and make the whole journey actually fun.

Download on the App Store See how it works
● A hobby project by one person who loves sport, nutrition & living well — because when you don't know what you don't know, good decisions are hard.
R
Good morning
radu
Workout · Today
Push 6-12-24
SETS 25
EX 9
~58 MIN
▶ Start
Spark: Vit D dropped to 38 — I cut Thursday's volume 12% and added it to your stack.
Readiness
90
7d Tonnage
17.0t
The problem
Every other app gives you someone else's plan.
✕
A 12-week template that ignores your genetics, your hormones, your sleep last night.
✕
Manual logging: you spend 30 minutes building a session before you even lift.
✕
No idea why a lift stalled — was it recovery, nutrition, a vitamin you're low on?
How it works

Three things, and then it just runs.

Set it up once. After that, Spark — your AI coach — does the heavy lifting every single day.

01

Upload your data

Your genetic file (23andMe / AncestryDNA), recent bloodwork, and a quick Apple Health connect. Encrypted, on-device, yours.

02

Spark reads you

28 sport-relevant genes, your hormonal markers, HRV and sleep. It learns whether you're built for power, endurance, or both.

03

It writes the workout

No manual entry. Spark builds each session and adjusts it daily — pushing when you're primed, pulling back when you're not.

The magic moment

Ask in chat. It changes the app.

Tell Spark "I slept badly" or "my shoulder's tight," and it doesn't just reply — it rewrites Thursday's session, swaps the risky lift, and the change is live in your Train tab. A 30-minute program build becomes one sentence.

Proposals you approveOne-tap apply24h undo
Your bloodwork shows Vit D at 38 — under the strength floor for your VDR variant.
what do we do?
● Proposal · Thursday Push
Push −12% volume
Bench Press4×8 → 3×8
Incline DB3×9 → 4×9
+ Vit D 4000 IU6 wk
Apply to plan
Edit
See yourself change

A body that grows with you.

Your digital body maps every session and supplement to the muscle it actually affects. Train chest, watch it light up and level. Dress it, earn rare gear through streaks and PRs, and carry your identity onto the social map.

Muscle-group impactXP & unlocksWardrobeSocial card
Under the hood

It's not one feature.
It's a whole coaching system.

Five engines working together — the conversation, the analysis, the calendar, the map, and the game.

Conversations → Programs

Describe it. Get a full program.

"Build me a 4-day hybrid block, power focus, one long Z2, protect my right shoulder." Spark turns a sentence into a complete periodized program — every set, rep, rest and progression — using your genetics and recovery. Tweak any of it by just talking back.

Chain-of-thought build Full periodization Edit by chat
SPARK · BUILDING…
✓ ACTN3 RX → power complexes
✓ PPARGC1A GG → Z2 long pays off
✓ Right shoulder → no overhead press
Building Mon·Tue·Thu·Sat…
DRAFT · WEEK 1/8
Power + Engine
4×/WK · 8 WK · ~50 MIN
Continuous analysis

It connects the dots you can't.

After every session and every week, Spark cross-references four streams — training load, nutrition, bloodwork and DNA — to explain what's happening and adjust. "Your bench stalled because CK is high and Vit D dropped. Eccentric load capped two days, supplement added." Cause and fix, automatically.

Training load Nutrition Bloodwork DNA
CK
248 ↑
VIT D
38 ↓
Bench stalled → high CK + low Vit D. Eccentric capped 2 days, supplement added. Retest in 6 wk.
Plan & calendar with AI

Your whole season,
laid out for you.

See weeks and months ahead at a glance. Drop in a blood test, a massage, a sauna or a rest day — and Spark plans your training around your real life. Everything syncs two-way with Apple & Google Calendar, so your coaching lives where the rest of your life already is.

Day · Week · Month Bloodwork · massage · sauna Apple & Google sync
June 202617 days to race 🏁
M
T
W
T
F
S
S
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Strength Run Blood Recovery
Training map

Find your people,
find your spots.

See what's around you — gyms, tracks, trails — and the athletes nearby who match your genome and your goals. Send a request, meet a training partner, build a crew. Your avatar is your identity on the map, so you show up as you.

Genome-fit matching Partners & crews Spots nearby
● 6-12-24 · Push
● Maria · Z2 10k
● Hub · 3 people
● You · now
Gamified body

Logging that's
actually fun.

Every workout levels up a real muscle group on your digital body — watch it grow, session by session. Earn rare gear through streaks, PRs and challenges, dress an avatar that's unmistakably yours, and turn staying on track into a game you want to play.

Muscle-group XP Streaks & badges Wardrobe & unlocks
Why it's different

Built on you, updated every day.

Genetic

ACTN3, ACE, VDR, MCT1 and more — your power vs endurance lean, injury risk, caffeine and vitamin response.

Bloodwork

Testosterone, cortisol, vitamin D, ferritin, CK. Snap a photo — Spark reads it and acts on it.

Daily readiness

HRV, sleep and load decide today's intensity. Green means go. Amber means we adjust — automatically.

Always-on coach

Strength, running, recovery, nutrition — one goal, one coach, adapting your whole plan week to week.

The idea
"You already have the most personal training data on earth — written into your genes and your blood. Genefitt is the first coach that actually reads it."
— The Genefitt team
Free to start

Stop guessing.
Start training with your biology.

Download Genefitt, connect your data, and get your first AI-built session in minutes.

Download on the App Store