Biohack vs Zsaria
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Biohack
This app analyzes your meals to provide a longevity score based on aging research. It also tracks intermittent fasting, offers personalized nutrient targets, and recommends supplements to optimize your diet for a longer, healthier life.
- AI-powered meal analysis
- Longevity meal scoring
- Intermittent fasting tracker
- Personalized nutrient targets
- Supplement recommendations
- Longevity insights and trends
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What if every meal you eat could add - or cost - minutes of your life? Biohack is the first longevity food coach that scores your meals based on cutting-edge aging research. Stop guessing what's healthy. Start knowing exactly how your food impacts how long you live. MEAL SCORING Snap a photo or describe your meal - our AI analyzes every ingredient and gives you a science-backed longevity score from 1 to 10. See which foods add time to your life and which ones take it away. FASTING TRACKER Track your intermittent fasting sessions with a beautiful, intuitive timer. Monitor your autophagy window and build consistent fasting streaks. Choose from popular protocols like 16:8, 18:6, or OMAD. PERSONALIZED NUTRIENT TARGETS Your body is unique. Biohack calculates your optimal daily nutrient targets based on your age, sex, activity level, diet, and health goals. No generic one-size-fits-all recommendations. SUPPLEMENT INTELLIGENCE Discover your nutrient gaps and get personalized supplement recommendations. Track your stack and build better habits with daily reminders. LONGEVITY INSIGHTS See your weekly and monthly trends. Understand how your eating patterns affect your biological aging. Get actionable coaching tips to optimize your nutrition for a longer, healthier life. KEY FEATURES • AI-powered meal analysis from photos or text • Science-backed longevity scoring for every meal • Intermittent fasting tracker with autophagy insights • Personalized daily nutrient targets • Supplement gap analysis and recommendations • Vitamin D intelligence based on your location and season • Daily streaks and longevity milestones • Beautiful dark mode support THE SCIENCE Biohack is built on peer-reviewed research in nutritional gerontology, caloric restriction, autophagy, and nutrient optimization. Every score reflects what science knows about how food affects aging at the cellular level. YOUR DATA, YOUR PRIVACY Your health data stays yours. We never sell your data or share it with advertisers. See ourprivacy policy for details. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://buettnerlabs.com/terms Privacy Policy: https://buettnerlabs.com/privacy Start your for free and discover how your food choices shape your future.
Zsaria
This app helps women understand their natural rhythms and how hormonal shifts influence their daily lives. It connects cycle awareness with nourishment, movement, and emotional reflection, offering personalized insights and support.
- Track menstrual, follicular, ovulatory, and luteal phases
- Explore hormone patterns and energy shifts
- Receive phase-specific insights and education
- Connect cycle with nourishment, movement, and self-care
- Journaling with guided prompts and body check-ins
- Visual cycle calendar and orb
- Partner Sync for shared cycle awareness
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ZSARIA You’re not meant to feel the same every day. Women are rhythmic, seasonal beings. Across the menstrual cycle, shifting hormones can influence energy, mood, appetite, sleep, skin, movement, recovery, focus, and the way you experience yourself. ZSARIA was created to help you see those patterns. Rather than treating your period as an isolated event on a calendar, ZSARIA brings your cycle into the context of your whole life—connecting cycle awareness with nourishment, movement, self-care, emotional reflection, body intelligence, and daily rhythms. Your cycle is one signal. ZSARIA helps you see the whole picture. UNDERSTAND YOUR RHYTHM Track your cycle while exploring what may be changing beneath the surface. • Follow menstrual, follicular, ovulatory, and luteal phases • Explore hormone patterns and changing energy throughout the month • See fertile-window, ovulation, and cycle predictions • Discover phase-specific insights and education • Notice patterns across mood, energy, body, and daily life WHOLE-BODY INTELLIGENCE Your cycle doesn’t exist in isolation. Explore connections across: • Hormones and cyclical changes • Nourishment and nutritional support • Movement, strength, recovery, and restoration • Skin and self-care • Mood, energy, and emotional patterns • Traditional and holistic wellness perspectives • Daily rhythms and seasonal living ZSARIA brings these perspectives together so you can become more curious about what your body may be asking for now. NOURISHMENT & APOTHECARY Explore food, herbs, supplements, and supportive practices through the context of your current rhythm. • Phase-aware nourishment ideas • Food and nutrient education • Herbal and traditional wellness perspectives • Supplement intelligence and supportive ingredients • Practical ways to nourish changing needs throughout the month MOVEMENT IN RHYTHM Your capacity can change—and your movement can change with it. • Explore movement recommendations across your cycle • Support strength, mobility, recovery, and restoration • Understand how different phases may relate to energy and performance • Choose practices that meet your body where it is today REFLECTION & SELF-DISCOVERY Your inner world has rhythms, too. • Journal freely in a private reflective space • Explore guided prompts and deeper self-inquiry • Notice emotional and behavioral patterns over time • Work with body check-ins and reflective exercises • Write unsent letters and explore different ways of processing experience • Record and reflect on dreams YOUR RHYTHM, AT A GLANCE See the larger pattern through ZSARIA’s visual cycle experience. • Explore your Monthly Rhythm Calendar • Follow your Cycle Orb through each phase • View cycle milestones alongside lunar context • Tap dates and events for deeper insights • Sync cycle predictions and key dates with supported calendar apps PARTNER SYNC Cycle awareness can support relationships, too. Partner Sync creates a shared window into cyclical changes, helping partners better understand changing energy, needs, and rhythms while encouraging communication, empathy, and connection. MORE THAN A PERIOD TRACKER Most cycle apps answer one question: When is my next period? ZSARIA asks something bigger: What is happening in my body—and how does it connect to the way I’m experiencing my life? Your menstrual cycle isn't something that happens to you once a month. It is an ongoing biological rhythm. ZSARIA helps make that rhythm visible, so instead of simply tracking your cycle, you can begin living in relationship with it. IMPORTANT ZSARIA is intended for educational and wellness purposes only and is not intended to diagnose, treat, cure, or prevent any medical condition. Information provided within the app is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional regarding questions about your health.
Screenshots
Verdict
The clearest difference is in-app purchases: Zsaria at none against Biohack's 2. Zsaria also leads on iOS requirement (15.1 vs 17.0). Biohack's advantage is update cadence (fortnightly vs monthly) and ratings volume (3 vs 1). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Biohack sells 2 in-app purchases, starting at $4.99 per month. Zsaria asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Biohack against 5.0 for Zsaria. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Biohack ships an update fortnightly, Zsaria monthly. Both last shipped on October 31, 2026.
| Parameter | Biohack | Zsaria |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 176 MB | 190 MB |
| Age rating | 12+ | 17+ |
| Developer | Buettnerlabs LLC | ARIANA ELAINE WADE |
Customer experience
Biohack
Zsaria
In-app purchases
Biohack
- Monthly14 Days trial$4.991 Month
- Yearly$29.991 Year
Zsaria
No in-app purchases









