Why your energy isn't the same every week
The four phases of your cycle — and how each one changes what your body can do.
Hormones
Meet Eva — your AI health companion
Enter your Prime Era, on your own terms.
Eva is the first AI assistant built around a woman's physiology — your cycle, energy, and goals. Stop fighting your body. Start working with it.
9:41
Good morning,
Maya
14
DAY
Ovulation phase
Peak energy — a great day for a strength session.
Cycle
Nutrition
Trainer
Mind
E
Your iron looks a little low this week. Want a menu that helps?
Ask Eva anything…
Designed around her, not the default
Hormone-awareScience-backedPrivate by designMade with women
The invisible gap
For decades, the world was built for the male body.
In Invisible Women, Caroline Criado Perez documents how a data gap left women's needs an afterthought — in medicine, safety, and technology.
5°C
Standard office temperatures can run ~5°C colder than what's comfortable for women.
47%
More likely to be seriously injured in comparable crashes — female dummies arrived only in 2011.
70%
Speech recognition was up to 70% more accurate at understanding male voices.
Eva
Closes the gap on a personal level — an assistant that finally accounts for you.
One companion, every day
Everything Eva does for you
Eva reads your physiology, hormonal cycle, emotional state, habits and goals — then guides your day with them, not against them.
Cycle-aware calendar
Track your cycle, sex life and training in one view — and see how each phase shapes your energy.
Nutrition adviser
Calorie and nutrient guidance tuned to your goals, preferences, deficiencies and cycle phase.
Personal trainer
A training program built for your frequency and goals — with the principles of training for women.
Mental well-being coach
Coaching to handle stress, sharpen concentration, and get genuinely restful sleep.
Smart dashboard & chat
Shortcuts, daily tips and a chat that knows your context — ask Eva anything, anytime.
Science-backed blog
Every recommendation links back to the research behind it. The science stays transparent.
Calendar
Your whole rhythm, in one place
Log your cycle, intimacy and workouts together. Eva overlays them so you can finally see the patterns — and plan around the days you feel your best.
- Cycle, sex-life & training tracking
- Phase-based energy forecasts
- Gentle, private reminders
October
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PeriodOvulationTraining
Nutrition adviser
Fuel that fits your phase
Tell Eva your goals, preferences and deficiencies. She calculates what your body needs for the activity ahead and the phase you're in — no more generic meal plans.
- Cycle- & activity-aware calories
- Deficiency-aware suggestions
- Respects your food preferences
Today's target
Ovulation2,080 kcal
Personal trainer
Train with your body's clock
Eva builds a program around your goals and how often you want to move — then explains the principles behind training designed for women, so every session has a reason.
- Adaptive weekly programming
- Recovery matched to your phase
- The 'why' behind every workout
MDone
Mon · Strength
Lower body · 45 min
WToday
Wed · Power
Peak energy — go heavy
FPlanned
Fri · Mobility
Gentle flow · 25 min
Mental well-being coach
A calmer, clearer mind
A personal coaching program to help you handle stress, improve focus and rest well — with check-ins that adapt to how you're actually feeling.
- Guided stress & focus sessions
- Sleep & recovery support
- Mood check-ins that learn
How are you today?
😔😐🙂😄
Today's session
A 6-minute breathing reset for the afternoon dip.
Our mission
"Instead of fighting their bodies, women learn to understand their unique needs — and use them to their advantage."
Eva exists to help every woman achieve her Glow Up, build a more comfortable life, and enter her Prime Era on her own terms.
Begin your Prime EraRooted in science
Explore the library Every recommendation, traceable to research
The blog is Eva's open library — the evidence behind her advice, always accessible to you.
Nutrition
Iron, energy and the second half of your cycle
What the research says about fuelling the luteal phase and beyond.
Mind
Stress, sleep and the science of recovery
Small, evidence-based habits that protect your focus and rest.
Loved by her
Women who stopped guessing
★★★★★
"For the first time an app actually accounts for my cycle. My training finally feels like it's working with me."
L
Lena K.
Using Eva for 4 months
★★★★★
"The nutrition advice changes with my phase and I feel the difference in my energy. It just gets me."
S
Sofia M.
Using Eva for 7 months
★★★★★
"I love that every tip links to the science. I finally trust the advice I'm getting about my own body."
A
Amara T.
Using Eva for 2 months
Questions
Good to know
Is Eva a medical service?
Eva is a personal wellness assistant, not a substitute for medical care. She helps you understand your body and build sustainable habits, and always points to the science behind her guidance.
How does Eva personalise her advice?
During sign-up you share your age, measurements, goals, lifestyle, sports and anything affecting your hormones. Eva combines this with your cycle and daily check-ins to tailor nutrition, training and coaching.
Is my data private?
Your health data is personal and treated that way. You control what you share, and you can update or delete your profile at any time from Settings.
Do I need to track my cycle for Eva to help?
No — Eva is useful from day one for nutrition, training and mental well-being. Cycle tracking simply makes her guidance even more precise over time.
Which devices is Eva available on?
Eva is available on iOS. Sign in with Apple, Google, or an email and password to sync across your devices.
How much does Eva cost?
You can start for free and explore the core features. Deeper coaching and personalised programs are part of Eva's premium plan.
Start your Glow Up today
Download Eva and meet the first AI assistant that finally understands your body.
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