Your fuelling plan.
Built around you,
not the average athlete.
Sweatr calculates your personal sweat rate using the same method as elite athletes, then builds your session plan: what to drink, what to eat, and when. Built for runners, cyclists, and triathletes who want to stop guessing.
Today · Long run
Your fuel plan
1h 45m · 18.3 km · 72°F
Est. sweat loss
1.4 L
0 L
2.1 L
Schedule
Start hydrated
Drink now
Take gel
Drink now
Take gel
Less typing and more moving thanks to these integrations
Apple Health
Strava
How it works
Meet your new fuelling and hydration coach.
Setup
Connect devices
Link your wearables to get started
Auto-importing from
Apple Health
Syncing workouts automatically
Features
Everything you need
to fuel smarter.
Your sweat rate,
not a formula
Pre/post weigh-ins calculate the number that's actually yours — done at the start, then occasionally to fine-tune. The same protocol used with elite athletes. Takes 30 seconds.
Personalised fuel plans
Hydration and fuelling scheduled to your session — what to drink, when to take a gel, mapped to real products.
Electrolyte fuelling catalogue
A searchable database of gels, drinks, and chews matched to your sweat profile. Think MyFitnessPal, but built for race day.
Condition modelling
Heat, humidity, and altitude all change how you sweat. Sweatr adjusts your plan when conditions change.
Wearable sync
Apple Health and Strava. Your workout data imports automatically — no logging required.
Team functionality
Coaches and physios can run plans for their athletes. One platform, multiple profiles.
Race day plans
A complete race day fuelling plan built around your pace, sweat rate, and conditions — from pre-race morning nutrition through to the finish line.
Why Sweatr exists
Your watch tracks everything your body puts out. Nothing tells you what to put back in.
Heart rate, pace, distance, calories burned — your wearable captures every ounce of effort. But it never tells you what to replace. How much to drink. When to take a gel. What your body actually needs to keep performing. That’s where potential goes unrealised and races fall apart.
The wall
Miles 19–26 feel like running through concrete.
You trained for months. You tapered. You felt ready. Then your glycogen ran out and your body had nothing left to burn. Generic gel timing doesn't account for your pace, your weight, or the heat.
The cramp
Both calves seize. The ride is over.
Not because you didn't train hard enough. Because you lost more sodium than you replaced, and no hydration calculator knew your sweat rate well enough to tell you.
The stomach
You took a gel. Your gut had other ideas.
Too much, too soon, too concentrated. GI issues end more races than fitness does — and they're almost entirely preventable with the right timing and the right products for you.
These aren’t bad luck. They’re the result of a plan that doesn’t know you.
Race day gets a dedicated plan — your pace, your conditions, your nutrition from morning to finish line.
Your sodium target is calculated from your actual sweat rate, so cramping goes from unknown risk to managed number.
Gels are spaced to your pace and what your gut can actually absorb — not a generic 45-minute reminder.
Sweatr is the missing layer — turning your wearable data into a fuelling plan built for you, not averages.
Pricing
Free to get started.
Pro when race day matters.
Free Plan
Enough to see how Sweatr works and build the habit.
- 3 sweat tests
- Basic salt loss classification
- Weather-aware conditions
- Last 3 workout history
- Pre-exercise hydration guide
Pro Plan
Everything you need when you're training for something.
- Unlimited sweat tests & full history
- Personalised hydration targets per session
- Sweat trends & recovery guidance
- Heat, humidity & altitude modelling
- Apple Health + Strava sync
- Team functionality
- Electrolyte & fuel catalogue — a personalised database of gels, drinks, and chews matched to your sweat profile
Free tier includes 3 sweat tests and 3 workouts of history. Upgrade any time.
Download Sweatr
Download Sweatr free.
Get your first personalised plan
before your next session.
Download on the App StoreiOS 16 and above · Free to download · Set up in 5 minutes