Bloom: Private Period Tracker

Bloom is a private period tracker and cycle calendar that keeps every log encrypted on your phone. No account, no cloud, works offline, with honest predictions that show a range.

PRIVATE BY DESIGN
• No account, no sign-up, no email and no server: your logs are never uploaded
• Stored encrypted with AES-256, with the key locked in your phone's Android Keystore
• No advertising ID. Analytics never include dates, symptoms or any health details
• App lock with a 4-digit PIN or fingerprint; it hides the app in Recent apps and blocks screenshots
• Password-protected backup file you can save anywhere, plus CSV and JSON export
• Delete everything in one tap: all data and the encryption key are erased

HONEST CYCLE PREDICTIONS
• Next bleed, fertile window and ovulation estimates
• Each estimate shows how sure it is, for example ±2 days
• Learns from your recent cycles and ignores one-off outliers
• PCOS and irregular cycle mode: dates shown as a range, extra symptoms and a yearly cycle count
• Teen mode: 21 to 45 day cycles count as normal in the first years
• Optional BBT and LH test logging to refine the ovulation estimate

LOG IN SECONDS
• Cycle ring: every day of your cycle as a bead, with menstruation, fertile and pre-menstrual days at a glance
• Month calendar: tap past days to add or remove bleeding days
• Log flow, symptoms like cramps, bloating and acne, moods, discharge, temperature, LH tests and notes
• Undo for every change

INSIGHTS AND A DOCTOR-READY REPORT
• Average cycle and bleed length, variation, shortest and longest cycle
• Cycle history chart with the typical 21–35 day band
• Top symptoms and moods over 6 months, plus a temperature chart
• Gentle "talk to a doctor" cards based on NHS, ACOG and the 2023 International PCOS Guideline
• PDF for your doctor: cycle table, chart, symptoms and red flags (3, 6, 12 months or all)

REMINDERS AND PILL TRACKING
• Reminders before your next cycle, a daily log nudge, pill time and the fertile window
• Discreet notifications that never mention menstruation on the lock screen
• Combined pill pack tracking for 21+7, 24+4 and 28-day packs

MADE FOR INDIA, FOR EVERYONE
• Full Hindi and English, or follow your phone's language
• Day, Night, Auto and a bright Teen theme
• 8 short, sourced guides: cycle phases, PCOS, heavy bleeding and anaemia, PMS and PMDD, when to see a doctor and more

WHO IT IS FOR
• Anyone who wants a private menstrual calendar, not a cloud account
• People with PCOS or irregular cycles who want ranges, not false precision
• Teens in their first years of menstruation
• People trying to conceive who log BBT and LH tests

HOW TO START
1. Open Bloom and tap the day your last bleed started
2. Log flow, symptoms or mood from Today any time
3. After two cycles, see averages, the chart and patterns in Insights
4. Before an appointment, share the PDF with your doctor

FAQ
Does this period tracker work offline?
Yes. Logging, predictions and reports work without internet.

Is my period data shared or sold?
No. Logs stay encrypted on your phone, there is no account or server, and files leave only when you share them.

Can I move my data to a new phone?
Yes. Save a password-protected backup file to Google Drive or anywhere, then restore it on the new phone.

Does the tracker work with irregular periods or PCOS?
Yes. Turn on PCOS mode and dates are shown as a range, with a yearly cycle count and extra symptoms.

Can I use it as birth control?
No. Fertile window and ovulation dates are estimates, and no day of the cycle is guaranteed to be safe.

What can I export?
A PDF report, a CSV spreadsheet of every logged day and a full JSON file.

IMPORTANT
Bloom gives information, not medical advice, and is not a medical device. Predictions are estimates and must never be used as birth control. Always talk to a doctor about health concerns.