Flo Ovulation & Period Tracker: Track Cycles

Flo Ovulation & Period Tracker is a health and fitness application by Flo Health Inc. that tracks menstrual cycles, ovulation, pregnancy, and perimenopause symptoms. It is designed to help users recognize patterns in their reproductive health over time. The app combines a daily logging interface with educational content and predictive estimates based on the data a user enters.

The application covers a broad range of reproductive stages. Users can log periods, moods, and more than 70 symptoms, receive fertile window and ovulation predictions, record basal body temperature, and switch to a pregnancy mode for weekly developmental guidance. A separate set of tools addresses perimenopause, including a Perimenopause Score, a Menopause Timeline, and tracking for sleep, energy, mood, and overall well-being. Flo also supports Wear OS 3 through complications and tiles, allowing cycle information to appear on a paired watch.

Flo places notable emphasis on data protection. It holds dual ISO 27001 and ISO 27701 certifications, and in 2025 its information security management team received recognition at the PICCASO Privacy and Security Awards. An Anonymous Mode lets users track without linking a name, email, or personal identifier. The most recent release, dated October 7, 2026, is described as a technical update focused on performance improvements rather than new user-facing features.

Key features

• Cycle predictions for regular or irregular periods, including fertile window and ovulation estimates based on logged data.
• More than 70 trackable symptoms and moods for personalized menstrual cycle insights.
• Basal body temperature logging to support fertility awareness.
• A dedicated pregnancy mode with week-by-week development updates, visuals, and checklists.
• Perimenopause tools including a Perimenopause Score, Menopause Timeline, and symptom tracking for sleep, energy, mood, and well-being.
• Anonymous Mode for using the period tracker without linking a name, email, or personal identifier.
• Secret Chats for connecting with other members to share tips and experiences.
• Wear OS 3 complications and tiles for cycle insights on a watch.
• Dual ISO 27001 and ISO 27701 certifications for information security and privacy management.

How to install

1. Tap the download button on this page to get the APK file.
2. If Android asks for permission, allow your browser or file manager to install apps by enabling the 'Install unknown apps' setting.
3. Open the downloaded APK file from your notifications or file manager.
4. Tap Install and wait for the process to finish.
5. Open the app and follow the initial setup prompts to begin logging your cycle.
6. The package requires Android 10 or newer; file size is not specified.

What's New

The developer describes this version as a technical update focused on improving the app and making its performance better. No other changes are listed for this release. The team also thanks users for updating and invites those who enjoy the app to leave a rating and review.

Flo is suited to people who want a single app to track menstruation, fertility awareness, pregnancy, or perimenopause. It may appeal to users who value privacy certifications and anonymous tracking options, as well as those who prefer structured educational content alongside personal logs.

Use Anonymous Mode during initial setup if you want to explore the app without linking your name or email. Log symptoms consistently for at least two or three cycles before relying heavily on predictions, since ovulation and fertile window estimates depend on the data you provide.

For those who want a structured, data-protection-focused cycle tracker with options that span menstruation, conception, pregnancy, and perimenopause, Flo is a strong candidate. The free tier covers essential tracking, while advanced educational tools sit behind a subscription. It is not a medical device or a birth control method, and its predictions should be treated as informational rather than clinical guidance.