01
Sign-up quizzes that age out
Goals, schedule, motivation — what the user told you on day one no longer matches who they are by week three. Static profiles drift; every recommendation built on them drifts further off.
Solutions / Fitness & Coaching
Bend the day-30 retention curve.
Most fitness apps personalize once — at sign-up. Sahha keeps personalization continuous: who the user is, how they feel, and when they’re slipping.
Powering fitness products at 
Why retention falls
Three forces pulling your retention curve down.
02
Average days that don’t exist
Today’s plan is the same whether they slept 4 hours or 9. Without a daily read on recovery, stress, and sleep, intensity and timing can’t match what the user can actually do.
03
Churn signals you miss
By the time DAU drops, the user disengaged weeks ago. Behavioral signals — falling activity, worsening sleep, dropping wellbeing — change before app usage does. You see them only if you’re watching outside your own product.
What you build
Workflows you can ship with Sahha in days.
Recovery-aware training
Score
readiness.state
Archetype
exercise_frequency
Action
Plan rest/recovery if readiness is low; plan matched to training frequency otherwise.
Personalize content & class recommendations
Archetype
primary_exercise_type
Score
sleep.state
Action
Class and content recommendations matched to exercise preferences and recent sleep.
Catch decline early
Insight
trend("wellbeing").state
Tag
mood:exhausted
Action
Flag users in concerning behavioral patterns before app engagement metrics catch up.
Engage when they’re ready
Insight
trend("steps").state
Archetype
activity_level
Action
Time campaigns to rising momentum, or peak struggle.
How it works
One integration. Every health signal you need.
- Step 1: Connect a data source. Drop the mobile SDK into your app to read HealthKit or Health Connect — or connect a wearable. No tracker required.
- Step 2: Sahha turns raw data into signals. Raw samples become scores, archetypes, biomarkers, and insights — normalized and ready, with up to 30 days of history on connect.
- Step 3: Build on the signals. Pull via REST API or receive real-time webhooks, then activate the signals across your product and stack.
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Works without wearables
Track activity, sleep, and recovery from just a smartphone.
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Health intelligence
Scores, archetypes, insights, tags, and biomarkers out of the box.
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Day-one history
Up to 30 days of data the moment a user connects.
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Real-time webhooks
New updates pushed as data lands.
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Fits your stack
Push signals to your favorite tools and platforms like Braze, Amplitude, Segment, and more.
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Privacy & compliance
HIPAA, GDPR, and SOC 2 compliant.
FAQ
Common questions.
Do users need a wearable?
No. Sahha reads data from the phone via Apple HealthKit and Google Health Connect, so you get sleep, activity, and readiness signals even for users who have never owned a tracker. A wearable adds precision when one is connected, but it is never required.
How long does integration take?
Most teams pull live signals within days. You drop the SDK into your iOS or Android app, or call the REST API directly, and receive up to 30 days of history the moment a user connects.
What can I actually use without building models?
Five scores (activity, sleep, readiness, wellbeing, and mental wellbeing), behavioral archetypes, biomarkers across sleep and activity, and trend insights — all from the same integration, with no data science required on your side.
How reliable is phone-only data?
Phone sensors reliably capture steps, activity, and sleep timing. Sahha builds scores and biomarkers to work from whatever a user has connected, and they improve automatically as richer sources like a wearable are added.
How is user privacy handled?
Data is collected with explicit user consent and built around health-data privacy from the ground up. You control what you request and how it is used, and users can revoke access at any time.
What does it cost to start?
The Sandbox tier is free for 30 days with every product unlocked and up to 25 development users — enough to build and test the workflows on this page before you talk pricing.
See it on your own data.
Spin up the sandbox, add the SDK to your app, and receive live readiness, archetypes, and trend signals.
Free for 30 days · All products unlocked
- Health intelligence, out of the box
- Works without wearables
- Up to 30 days of history on day one
- Ship signals in days, not months
- HIPAA, GDPR & SOC 2 compliant
Building something else?
Nutrition & Meal Planning
Tune meal plans to activity, sleep, and how users feel.
Supplements & Stacks
Recommend stacks that match what the body is actually doing.
Weight Management & GLP-1
Support GLP-1 journeys with daily behavior and recovery signals.
Workplace Wellness & EAP
Track and lift employee wellbeing without survey fatigue.
Telehealth & Clinical Care
Give clinicians continuous, between-visit health context.
AI Agents & Health Tools
Ground health agents in real biomarkers, not self-report.