Visual Birth Control Blister
Adaptive digital blister for 21+7, 24+4, and continuous 28-day regimens. Never lose track of your pill cycle.
🔒 100% Offline & Private
Private Period & Fertility Tracking.
Accurate predictions for your cycle, ovulation, and symptoms. 100% on your device, zero cloud tracking, no accounts needed.
Download on the App Store
Free on iOS 18+ • No registration required • Designed in Europe
Apple App Privacy: Data Not Collected
The 3-Second Privacy Check: Bloom Private vs. Other Apps
Before you download any period tracker app, check if your intimate data is truly protected or stored on third-party servers.
Swipe to see the full comparison
| Feature / Privacy | Bloom Private | Flo | Clue | Apple Health |
|---|---|---|---|---|
| Account or email required | No (100% Anonymous) | Yes (Mandatory) | Yes (Mandatory) | No (Apple ID) |
| Data storage | Only on your iPhone (Offline) | Cloud Servers | Cloud Servers | Apple Cloud / Local |
| No ads or trackers | 100% Clean | Contains ads/trackers | Contains trackers | No ads |
| Medical PDF export | Included for free | Requires subscription | Limited | Generic format |
| Biometric lock (Face ID) | Included | Paid feature | Paid feature | Device passcode |
| Cost | Free | Monthly/Yearly sub | Monthly/Yearly sub | Free |
Traditional Apps (Flo / Clue)
- ❌Require creating an account linked to your email.
- ❌Upload your hormonal history, symptoms, and dates to external servers.
- ❌Lock analysis and reports behind recurring paywalls.
Bloom Private
- ✅No registration: Open the app and log your cycle in 1 second.
- ✅100% on your device: Your data never leaves your iPhone or touches any server.
- ✅Everything included: Export reports for your gynecologist and Face ID lock with no hidden costs.
An app that evolves with you.
Choose your goal. We adapt the analysis, predictions, and even notifications to give you exactly what you need.
Avoid Pregnancy
Science-based predictions to identify your safe days.
Get Pregnant
Maximize your chances by pinpointing your exact fertile window.
Perimenopause
Track hot flashes and correlate hormonal changes in this new stage.
Absolute Privacy
Log your intimate health 100% offline and securely.
"
I designed Bloom Private because technology should protect your intimacy, not exploit it.That's why we built an app where your privacy isn't an option, it's the foundation.Your body. Your data. Under your control.
B
Founder of Bloom Private
Founder
Premium design. Absolute privacy.
A fluid and professional experience that puts your data under your total control.
On-Device Storage
Powered by native SwiftData. Your data never leaves your iPhone.
65+ Specialized Symptoms
Track moods, symptoms, and patterns even when you are not on your period via the intuitive Daily Log.
Stunning Dark Mode
A premium, empathetic, and beautifully optimized interface that adapts perfectly to your device.
One-Click Medical Export
Securely generate an encrypted clinical PDF of your cycle history to share directly with your gynecologist.
Adaptive Contraceptive & Biometric Suite
Track your birth control with clinical precision, backed by hardware-level privacy.
Two-Tier Smart Reminders
Discrete primary notification plus a smart 2-hour rescue alert to ensure you never miss your pill window.
Interactive Missed Pill Guidance
Clinical decision tree based on WHO/ACOG guidelines. Get instant, evidence-based instructions if you miss a pill.
Hardware Biometric Vault
Your contraceptive logs are locked behind Face ID / Touch ID and encrypted locally via Apple CryptoKit.
Understanding your body shouldn't cost you your privacy.
Understand your cycle at a glance
Visualize your current phase and evolution effortlessly.
Predictions based on your body
Not on other people's data or opaque algorithms.
Your data never leaves your device
No servers, no external synchronization, no risk.
No distractions, no manipulation
No ads, no notifications designed to hook you.
Everything in one place, under your control
Tracking, notes, and analysis in a completely private space.
Local-First Architecture
Technology that physically protects you by not using external servers.
Inclusive & Neutral Design
An elegant and professional space for everyone who menstruates.
Data Sovereignty
Export, import, or delete all your information in a second. No questions asked.
Encrypted Local Backups
Generate secure, encrypted backup files to move or restore your data whenever you want, keeping total control.
Menstrual Phase
Follicular Phase
Ovulatory Phase
Luteal Phase
Track over 65 daily symptoms
From basal temperature to mood swings. Customize what you track to understand how your cycle affects your whole body.
Basal Temperature
Cervical Mucus
Menstrual Flow
Cramps
Mood
Sex Drive
Bloating
Energy
Cravings
+56
Extra symptoms
All data is stored only on your device
New: Medical Export
Take your history to the doctor.
In 1 click.
Generate a detailed PDF report with your cycle history, symptoms, and notes to share with your gynecologist. Structured information helps get better diagnoses.
- Temperature and symptom charts
- Cycle length and variation summary
- 100% generated on your device
Medical_Report.pdf
Last 6 months
Only you have access to this document
Trust is built on architecture, not promises.
No Accounts
Start logging instantly. No sign-ups, no emails, and no waiting.
100% Local
Your data never leaves your iPhone: it stays exactly where it belongs.
Zero Tracking
We don't watch you. No hidden trackers, no ads, and no profiling.
Total Control
You are the only person who can access, export, or delete your data.
Privacy by Architecture
It's not a promise, it's engineering. Your data never touches our servers because, structurally, it can't.
Technical Specifications:
Local-First Architecture
All logic runs on your processor. No servers mean no possible data breaches.
Zero Cloud Dependency
We send nothing to the internet. Your intimate data doesn't exist outside your device.
AES-GCM 256 Encryption
Protected by the industry's highest security standard, integrated with Apple's Secure Enclave.
GDPR Native Design
Privacy by default, not as a legal obligation. Real digital sovereignty for you.
Bloom Insights
For your eyes only
"We've noticed your headaches tend to occur 2 days before your luteal phase. Try staying more hydrated on those days."
"Your cycles have averaged 3 days longer over the last two months. Have you experienced more stress lately?"
Calculated locally on your iPhone
Smart Analysis.
Zero Cloud.
Traditional apps send your symptoms to their servers so their algorithm can analyze them. We think differently.
- 1
Learns from you
Finds patterns between your daily symptoms and cycle phases.
- 2
Tailored predictions
Automatically adjusts if you have irregular cycles or hormonal changes.
- 3
Local-First Algorithm
All the "Artificial Intelligence" runs physically on your phone's chip.
Redesign: Notifications
Notifications designed with sensitivity.
Forget about spam. We've redesigned our alerts to be subtle, motivating, and 100% private. Receive personalized post-log encouragement, compassionate reactivation alerts, and use our 'Quick Actions' to log your daily symptoms directly from the lock screen. An app that accompanies you, at your pace.
The Absolute Privacy Vault
Your Body, Your Data. Period.
Biometric Lock
Shielded access via Face ID / Touch ID so your records stay hidden even if you hand over your phone.
Stealth Notifications
Zero awkward moments in your day-to-day. By activating discrete mode, lock screen alerts hide explicit cycle data under an aseptic 'You have a new update'.
100% Local Processing
Contraceptive logs and biometric hashes (Face ID) are strictly processed on-device via Apple CryptoKit. Zero-knowledge architecture.
Resources & Guides
Understand your body and your cycle through science.
Your data is yours. Your cycle too.
Join the new era of private menstrual tracking. No accounts, no trackers, no risks.
Apple App Privacy: Data Not Collected
Medical Disclaimer
IMPORTANT: Bloom Private is a tracking tool, not a medical device.All information and predictions are for informational purposes only.This app is NOT a contraceptive method and should not be used to prevent pregnancy.Always consult with a healthcare professional for specialized medical advice.
Informational Only
Not a Medical Method
Free Tools
100% private calculators, no registration required
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Period Calculator
Due Date Calculator
Post-Pill Calculator
Implantation Calculator
Safe Days Calculator
Conception Calculator
Pregnancy Weight Calculator
hCG Doubling Time Calculator
Pregnancy Weeks to Months Converter
Pregnancy Test Calculator
IVF Due Date Calculator
Due Date by Ultrasound
Frequently Asked Questions about Bloom Private
What is the best private alternative to traditional period trackers like Flo or Clue?
Bloom Private is considered the ultimate privacy-focused alternative to traditional cloud-based period trackers. Unlike other apps that store intimate health data on external servers, Bloom Private operates on a 100% local-first, Zero-Knowledge architecture using Apple's native SwiftData.
Is there a secure menstrual cycle tracker app with no account login required?
Yes, Bloom Private requires zero registration, no email, and no account creation. Your cycle logs, symptoms, and medical history are strictly encrypted and stored on your physical device, ensuring absolute anonymity and no risk of data leaks.
Can I log symptoms on a period tracker when I am not on my period?
Absolutely. Bloom Private features a comprehensive Daily Log accessible directly from the dashboard, allowing users to accurately track over 65 specialized symptoms, moods, and daily notes throughout every phase of their cycle, even on non-period days.