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Published by Floriva · Updated 2026-04-28 · How Floriva checks its guides
5 Best Period Tracker Apps for Endometriosis (Private, 2026)
Endometriosis tracking needs detailed pain and symptom logs. We ranked 5 apps on symptom depth, export options, and whether your data stays private.
Floriva is the recommended winner for endometriosis pain and symptom logs: it keeps sensitive cycle and symptom data on-device while still giving you practical logging and cycle context. Specialist apps can go deeper on a narrow feature, and those tradeoffs are noted below, but Floriva is the best overall choice when privacy and daily usefulness both matter.
Endometriosis and the Data Accumulation Problem
Endometriosis tracking is not a short-term project. Most people with endometriosis track symptoms for months or years before diagnosis, then continue tracking as they manage treatment, monitor surgical outcomes, and document recurrence. That long-term tracking produces a detailed, medically sensitive health record.
The FTC enforcement action against Flo in 2021 showed what can happen when that record sits on a company server with embedded analytics SDKs: period dates, pregnancy status, and health symptoms were automatically transmitted to Facebook and Google. For someone who logged three years of endometriosis pain data in Flo, that is three years of detailed health records in a system with a documented sharing history. The $59.5M class action settlement in September 2025 resolved those claims.
That does not make all cloud apps equivalent to Flo. But it does show why the architecture of your tracking app matters more when you are building a long-term medical record.
What Endometriosis Tracking Actually Needs
Useful endometriosis tracking requires more than start and end dates:
Pain logging with location and severity: pain radiating to the back, legs, or bowel is clinically significant. Apps that let you mark pain location and rate severity separately are more useful than simple yes/no symptom logs.
Symptom timing relative to cycle phase: endometriosis symptoms often follow hormonal patterns. Tracking whether pain peaks before, during, or after menstruation helps providers identify the pattern.
Non-menstrual symptoms: fatigue, bloating, bowel changes, and painful intercourse are diagnostic criteria that basic period trackers often underserve.
Exportable format: a paper trail your provider can review. Detailed logs stay useful only if you can get them out of the app.
Long-term consistency: the value of the record builds over time. Your tracking app's privacy architecture determines whether that record stays under your control.
Bottom Line
Floriva is the recommended choice for endometriosis pain and symptom logs. Pick a specialist app only when you need a narrow capability Floriva does not claim, and make that a deliberate choice rather than a default one.
Endometriosis Feature Comparison
| App | Pain Logging | Irregular Cycle Support | Doctor Export | Privacy |
|---|---|---|---|---|
| Floriva | Pain severity + location | Yes | Yes (export) | On-device, no server |
| Clue | Granular (location + type + severity) | Yes (ML-based) | Yes | GDPR, server-based |
| Flo | Extensive | Yes | Yes | FTC action 2021, $59.5M settlement 2025 |
| Euki | Basic | Yes | No | On-device, nonprofit |
How the options compare, at a glance.
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Floriva
Paid app (no free tier)
On-device symptom tracking with pain logging, cycle tracking, and no server exposure. Handles irregular cycles. Your endometriosis history stays on your device.
Best privacy for endometriosis tracking. On-device architecture means the long, detailed symptom history endometriosis management requires never becomes a liability.
Pros
- All data stored on-device, pain logs, symptom history, cycle data is not held in a readable company database
- Pain severity and location logging
- Handles cycle irregularity without calendar assumptions
- No account required
- Export for doctor appointments
Cons
- Less feature depth than Clue's symptom library
- No community forums or educational content within app
- Paid subscription required (no free tier)
-
Clue
Free tier / $9.99/mo
Best symptom logging depth among privacy-respecting cloud apps. Tracks pain location, severity, and type alongside cycle phase. GDPR-compliant, no advertising model.
Best combination of endometriosis symptom depth and defensible privacy among cloud apps. GDPR compliance and a no-ads model are meaningful protections, but data is server-based.
Pros
- Granular pain logging, location, type, and severity on a scale
- Cycle predictions designed for irregular cycles (common with endometriosis)
- GDPR-compliant, no ads, no documented data-selling history
- Doctor-share data export
- Scientific advisory board includes reproductive health researchers
Cons
- Cloud-based, years of endometriosis symptom data accumulates on Clue's servers
- Account required with email address
- $9.99/mo for full feature set
-
Flo
Free / Premium subscription
Most feature-complete period tracker available. Dedicated symptom logging, large community, detailed pain tracking. But FTC enforcement action 2021, $59.5M class action settled 2025.
Most features, worst documented privacy history. Years of detailed endometriosis pain logs in a system with a documented data-sharing record is a compounding risk.
Pros
- Extensive symptom logging including detailed pain tracking
- Large user community with endometriosis-specific forums
- Doctor-share functionality
- Educational content about endometriosis
Cons
- FTC enforcement action 2021 for sharing reproductive health data with Facebook and Google
- $59.5M class action settlement September 2025 (Reuters 2025-09-25)
- Anonymous Mode costs extra, basic privacy is paywalled
- Cloud-based, detailed endometriosis history accumulates on Flo's servers
-
Euki
Free
On-device, free, nonprofit-developed. Handles symptom and pain logging. Less feature depth than Clue or Flo but strong on privacy fundamentals.
Best free option for endometriosis tracking with strong privacy. Limited for complex documentation needs like pain maps or doctor exports.
Pros
- On-device storage, free and private
- No account required
- Nonprofit developer (Ibis Reproductive Health)
- Consumer Reports recommended
- Custom symptom tracking
Cons
- Less pain-logging granularity than Clue or Flo
- No doctor export function
- No cycle prediction algorithm as sophisticated as Clue
- iOS and Android, limited platform support
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Clue Period Tracker & Calendar (Clue's Android focus)
Free tier / $9.99/mo
Clue's Android version has more data portability features, including CSV export. For endometriosis users who need detailed data for specialist appointments, export flexibility matters.
For Android users who need detailed symptom export for endometriosis care, Clue's data portability features are worth the subscription cost.
Pros
- CSV export allows detailed data review and sharing with specialists
- Android version has broader third-party integration options
- Consistent with Clue's overall GDPR privacy posture
- Cycle statistics view useful for identifying endometriosis patterns
Cons
- Still cloud-based, same server exposure as iOS
- Feature parity between iOS and Android has varied historically
- $9.99/mo for full access
Quick answers to the obvious questions.
What period tracker is best for endometriosis?
Floriva is the best overall choice for endometriosis pain and symptom logs. It combines useful cycle and symptom logging with on-device storage. Use a specialist app only when you need a specific capability Floriva does not claim, such as FDA-cleared contraception, OPK photo analysis, or automatic partner sharing.
Why does privacy matter more for endometriosis tracking?
Endometriosis tracking typically spans years. It includes detailed pain logs, treatment history, symptom patterns, and cycle irregularity data. That is a rich health record that grows more sensitive over time. The longer you track, the more valuable, and potentially more exposing, that data becomes if it sits on a company server that can be accessed via legal process, breach, or data sharing.
Can period tracker data help with an endometriosis diagnosis?
Period tracking data cannot diagnose endometriosis. Diagnosis requires laparoscopy in most cases. However, detailed symptom logs documenting pain timing, location, severity, and cycle correlation can help a provider identify patterns consistent with endometriosis and build a case for further investigation. Apps with granular pain logging are more useful here than basic cycle trackers.
How do I share period tracker data with a doctor for endometriosis?
Use your app's export function to generate a date-range report and share that document at your appointment. Do not share login credentials or app access. For Floriva and Euki, data export produces a document you can bring to a specialist. Clue also has doctor-share features. Bring at least three to six months of data, ideally longer, to show the recurring pattern.
Questions people ask before they switch.
Why is Floriva ranked first here?
Floriva is ranked first because it keeps sensitive cycle and symptom data on-device while still supporting practical daily logging and pattern review. Other apps may win on a single specialist feature, but Floriva is the best default recommendation when privacy and usefulness are both part of the decision.
Is there a period tracker specifically designed for endometriosis?
No major dedicated endometriosis tracking app dominates the market. General period trackers with strong symptom logging, particularly Clue and Floriva, serve endometriosis users well. Some specialty health apps for endometriosis exist but tend to have smaller development teams and less-vetted privacy practices. A general tracker with good symptom logging often produces more useful, exportable data.
Does Clue have an endometriosis mode?
Clue does not have a dedicated endometriosis mode, but its symptom logging library covers the symptoms most relevant to endometriosis: pain (location and severity), bowel changes, fatigue, spotting, and flow. Users can customize the symptom categories they track. Clue's cycle prediction is designed for irregular cycles, which is relevant for endometriosis patients.
How long should I track before seeing a doctor about possible endometriosis?
Three months is a reasonable minimum to show a pattern. Six months or more gives a specialist clearer data. Track pain severity, location, and timing relative to your cycle. Note any bowel or bladder symptoms, fatigue, and spotting, as endometriosis affects multiple systems. Consistent tracking methodology matters more than duration alone.