

The Cycle App Built for Living.
The Cycle App Built for Living.
The Cycle App Built for Living.
Stop guessing why your energy crashes, your mood shifts, or your productivity fluctuates. HLI translates your hormonal rhythm into actionable wisdom you can use every single day.
Stop guessing why your energy crashes, your mood shifts, or your productivity fluctuates. HLI translates your hormonal rhythm into actionable wisdom you can use every single day.
Stop guessing why your energy crashes, your mood shifts, or your productivity fluctuates. HLI translates your hormonal rhythm into actionable wisdom you can use every single day.


You already know your cycle affects more than just your period.
You already know your cycle affects more than just your period.
You already know your cycle affects more than just your period.
You feel it:
Energy that surges and crashes without explanation
Workouts that feel effortless one week, impossible the next
Cravings and mood shifts that ruin your plans
A body that feels unpredictable when you need consistency
But when you open your tracking app? Just a calendar prediction and vague symptoms checkboxes. No explanation. No guidance. No real insight into what's happening or what to do about it.
You deserve better than a glorified period countdown.
You feel it:
Energy that surges and crashes without explanation
Workouts that feel effortless one week, impossible the next
Cravings and mood shifts that ruin your plans
A body that feels unpredictable when you need consistency
But when you open your tracking app? Just a calendar prediction and vague symptoms checkboxes. No explanation. No guidance. No real insight into what's happening or what to do about it.
You deserve better than a glorified period countdown.
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Track your energy.
Track your energy.
Track your energy.
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Learn your patterns.
Learn your patterns.
Learn your patterns.
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Understand your body.
Understand your body.
Understand your body.
Are you tired of period apps that only tell you when to expect bleeding?
Are you tired of period apps that only tell you when to expect bleeding?
Sign up to test our private app launch.
Sign up to test our private app launch.
HLI is your hormonal operating system.
HLI is your hormonal operating system.
🧠 Understand Your Energy
🧠 Understand Your Energy
Learn why you feel unstoppable mid-cycle but need a nap by the end of the month. HLI maps your symptoms to hormonal shifts, so you stop questioning yourself and start trusting your body.
Learn why you feel unstoppable mid-cycle but need a nap by the end of the month. HLI maps your symptoms to hormonal shifts, so you stop questioning yourself and start trusting your body.
💪 Get Actionable Daily Guidance
💪 Get Actionable Daily Guidance
No more generic advice. Every day, HLI gives you specific, science-backed recommendations for workouts, nutrition, stress management, and productivity tailored to your current phase and personal goals.
No more generic advice. Every day, HLI gives you specific, science-backed recommendations for workouts, nutrition, stress management, and productivity tailored to your current phase and personal goals.
📊 See Your Unique Patterns
📊 See Your Unique Patterns
Your cycle isn't textbook. After 2-3 cycles, HLI identifies your personal patterns: when energy peaks, when PMS typically starts, how diet and stress shift your timing. Finally, insights that actually match your lived experience.
Your cycle isn't textbook. After 2-3 cycles, HLI identifies your personal patterns: when energy peaks, when PMS typically starts, how diet and stress shift your timing. Finally, insights that actually match your lived experience.
Your cycle isn't textbook. After 2-3 cycles, HLI identifies your personal patterns: when energy peaks, when PMS typically starts, how diet and stress shift your timing. Finally, insights that actually match your lived experience.
🔐 Keep Your Data Private
🔐 Keep Your Data Private
Your health data never leaves your device. No accounts, no emails, no third-party sharing. Your body, your data, your control.
Your health data never leaves your device. No accounts, no emails, no third-party sharing. Your body, your data, your control.
Your health data never leaves your device. No accounts, no emails, no third-party sharing. Your body, your data, your control.
Step 1. Log What You Feel
Track energy, mood, symptoms—whatever matters to you. We keep it simple with quick-tap chips. No overwhelming symptom lists, just 5 core categories based on your goals.




Step 2. Get Daily Insights
Step 2. Get Daily Insights
Each morning, receive personalized guidance: why you feel the way you do, what to expect, and what to do about it.
Step 3. Learn Your Patterns
Step 3. Learn Your Patterns
After 2-3 cycles, HLI reveals your unique hormonal rhythm. See when you're naturally energized, when to expect PMS, and how factors like diet and stress impact your timing. This is body literacy that compounds over time.


What’s your hormone pattern telling you?
What’s your hormone pattern telling you?
What’s your hormone pattern telling you?
Find out where you are and what to do next.
Find out where you are and what to do next.
Find out where you are and what to do next.
The 2 Minute Check-In
Start My Cycle Check
Discover which phase of your cycle you’re in.
Get personalized insights on how to move, eat, and train today.
Build body awareness and turn your hormones into your advantage.
HLI's Mission
HLI's Mission
In a time when reproductive rights are under threat, understanding one's infradian rhythm is an act of self-trust and defense.
We believe women deserve tools that honor their physiology, not force them into male-designed systems. We believe tracking should build body literacy, not dependence on algorithms. And we believe privacy isn't a premium feature; It's a fundamental right.
When you understand your hormonal rhythm, you stop fighting your body and start leveraging it. You schedule high-stakes meetings during your peak. You rest without guilt during your low-energy phase. You fuel your body with what it needs, when it needs it.
That's not accommodation. That's optimization.
In a time when reproductive rights are under threat, understanding your hormonal cycle is an act of self-trust and defense.
By helping women identify when ovulation happens, when energy peaks or dips, and what the body needs, HLI equips women with real-time awareness to make empowered life choices, starting with fitness.



Built by Women, For Women
Built by Women, For Women
Built by Women, For Women
Designed for real life.
Designed for real life.
Designed for real life.
Backed by Research
Backed by Research
Backed by Research
Evidence-Based Education.
Evidence-Based Education.
Evidence-Based Education.
Privacy You Can Trust
Privacy You Can Trust
Privacy You Can Trust
Privacy-First.
Privacy-First.
Privacy-First.
We’re not just tracking periods — we’re designing a future where women’s bodies set the standard for success.
We’re not just tracking periods — we’re designing a future where women’s bodies set the standard for success.
We’re not just tracking periods — we’re designing a future where women’s bodies set the standard for success.
HLI