181+ iOS apps curated and reviewed
If you already know Biorhythms and Critical Days, this is the deeper bench. 181+ biorhythms and critical days apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (288) | Yes | No | Jul 2026 |
| 2 |  | Free | 4.7★ (3.9K) | Yes | No | Jul 2026 |
| 3 |  | Free | 4.5★ (2) | No | No | May 2026 |
| 4 |  | Free | 4.3★ (220) | No | Yes | Jul 2026 |
| 5 |  | Free | 4.3★ (83) | Yes | Yes | Jul 2026 |
| 6 |  | Free | 4.7★ (176) | Yes | Yes | Jul 2026 |
| 7 |  | Free | — | Yes | No | May 2026 |
| 8 |  | Free | — | Yes | Yes | Jul 2026 |
This app calculates your personal biorhythms, critical days, and birth date compatibility. It supports multiple user profiles with customizable themes and reminders, offering daily insights and advice for physical, emotional, and intellectual cycles.
Understand your daily physical, emotional, and intellectual cycles. This app provides insights into your biorhythms, helping you make informed decisions and avoid potential risks by analyzing your daily, weekly, and monthly patterns.
Chart your emotional, intellectual, physical, and intuitive cycles based on your birth date and time. Track up to 12 profiles to see how you sync with friends and family. Visualize your cycles for up to a year with color-coded sine waves.
Calculate and track your daily physical, emotional, and intellectual cycles. Understand how these periodic changes affect your energy, mood, and creativity. Compare your feelings to your biorhythm values and discover potential daily patterns.
This app helps you chart your life's cycles based on mathematical principles. It allows you to track physical, emotional, and intellectual states for yourself and friends, and find optimal sleep and wake times.
Discover your life's purpose and future through numerology, biorhythm, and psychomatrix calculations. This app provides detailed readings and forecasts to help you understand yourself, your relationships, and make informed life choices.
Visualize your physical, emotional, and intellectual rhythms alongside moon phases and Mercury retrograde. Get personalized AI analysis and compatibility insights to understand your daily condition and find better balance. Enjoy witty advice or deep dives into celestial influences.
This app calculates and displays your daily physical, emotional, intellectual, and intuitive biorhythms based on your birthday. It helps you understand your potential for stamina, judgment, and emotion, advising caution during low or dangerous periods. Analyze trends, manage multiple users, and share your biorhythm data.
Track your physical, emotional, intellectual, and love/sex/happiness cycles with emoticons. Calculate critical or best days and navigate through your stats easily. Share your insights on social media.
This app calculates your daily physical, emotional, and intellectual cycles based on your birth date. See how your day is likely to go and predict the moods of loved ones. Widgets offer quick access to your daily status without opening the app.
Visualize your daily mental, physical, and emotional cycles based on your birthday. Track your best and worst days of the year and manage multiple profiles. An Apple Watch app provides quick access to your current percentages and icons.
This application calculates various personal cycles, including physical, emotional, intellectual, intuitive, aesthetic, and spiritual, based on mathematical formulas. It offers a simple yet attractive interface for users to track these potential influences on their lives.
Understand your daily energy levels based on biological cycles. Predict periods of peak performance and when to conserve energy for better well-being.
This app uses AI and medical science to predict your lifespan and create a personalized plan for a longer, healthier life. It analyzes your health data, provides evidence-based recommendations, and tracks your progress in real-time.
This app provides a straightforward view of original biorhythm curves for multiple individuals. It focuses solely on displaying these curves without any extraneous information, offering a clean and easy-to-understand experience.
Optimize your daily activities by syncing with natural rhythms. This app helps you wake, eat, move, work, and rest at optimal times for improved energy, clarity, and sleep. It leverages sunlight, seasons, and scientific principles to guide your lifestyle for better health.
This app provides a vast library of interpreted ECG cases to help medical professionals and students enhance their electrocardiogram reading skills. It offers interactive learning modes and detailed case analyses, reducing the need for multiple reference sources.
Receive immediate alerts for significant heart rate fluctuations, ideal for conditions like POTS or during exercise. Customize thresholds and receive detailed event tracking. Premium features offer advanced data visualization and reporting.