Flo vs Clue for Perimenopause: Data Privacy Compared
TLDR
Flo and Clue are both general-purpose period trackers with data monetization built into their free tiers. Flo settled FTC charges in 2021 for sharing health data with advertisers. Clue uses an ad-supported model. Neither app was designed specifically for perimenopause.
| Feature | Flo | Clue | Horiva |
|---|---|---|---|
| Monthly cost | Free + $12.99/mo | Free + $14.99/mo | $9/mo |
| Privacy model | Data monetization | Data monetization | On-device only |
| Perimenopause focus | General | General | Perimenopause-first |
| Doctor reports | No | No | Yes — PDF export |
| Feature | Flo | Clue | Horiva |
|---|---|---|---|
| Monthly cost | Free / $12.99 | Free / $14.99 | $9/mo (trial) |
| Perimenopause focus | General period tracker | General period tracker | Built for perimenopause |
| Data privacy model | FTC settlement 2021 | Ad-supported | On-device only |
| Doctor reports | No | No | Yes — PDF export |
| Available in US | Yes | Yes | Yes |
Why This Comparison Matters
Flo and Clue are the two most downloaded period-tracking apps globally. They compete directly for the same demographic: women who want to track their reproductive health on their phones. Both offer free tiers. Both have faced scrutiny over how they handle health data.
The FTC Settlement
In January 2021, the FTC settled charges against Flo Health for sharing users’ health data with Facebook’s analytics tool and Google’s Firebase Analytics without user consent. This included data about pregnancy status, fertility intentions, and menstrual health. Flo agreed to notify affected users and undergo third-party privacy reviews. The fine was $75,000.
Clue has not faced equivalent enforcement action, but the ad-supported free model means health data contributes to revenue indirectly.
What Perimenopause Changes
Both apps are built around predictable cycles. Perimenopause disrupts that assumption. Cycle length variation increases, bleeds become heavier or lighter without pattern, and ovulation timing shifts. Prediction accuracy drops when the historical regularity the algorithms rely on disappears.
Neither app offers a perimenopause-specific tracking mode or symptom frameworks tailored to the transition phase.
The Privacy-First Alternative
Horiva stores all symptom data on-device. There is no server-side health profile to monetize, share, or subpoena. The $9/mo cost funds the product — there is no ad revenue model and no research data-sharing arrangement.
Neither option feel right?
Most women pay for features they don't use. Horiva is $9/mo with no data selling — ever.
Verdict
Both Flo and Clue have documented histories of health data monetization. For tracking sensitive perimenopause symptoms, neither is a privacy-first choice. Flo's FTC history is the more serious concern — the company paid $75,000 and agreed to user notification requirements.
PROS & CONS
Flo
Pros
- Large dataset enables reasonably accurate predictions
- Wide symptom logging library
- Premium includes cycle history analysis
Cons
- FTC settlement for sharing health data with advertisers without consent
- Free tier requires data-sharing agreement
- Irregular cycles reduce prediction accuracy significantly
PROS & CONS
Clue
Pros
- Academic research partnerships add credibility
- Clean, consistent interface design
- Better international data privacy compliance than Flo
Cons
- Free tier is ad-supported — health data funds the model
- No perimenopause-specific features
- Predictions break down when cycle regularity drops
Q&A
Is Flo or Clue better for perimenopause?
Neither Flo nor Clue was designed for perimenopause. Both rely on cycle regularity for their core predictions, which degrades as perimenopause progresses. If privacy is a concern, Clue's track record is cleaner than Flo's — Flo settled FTC charges in 2021 for sharing health data with Facebook and Google without user consent.
Q&A
Did Flo really share data with advertisers?
Yes. The FTC charged Flo Health in 2021 with sharing users' health data with Facebook and Google for advertising purposes without consent. Flo settled, paying $75,000 and agreeing to notify affected users and undergo third-party privacy audits.
Q&A
Does Clue share data with third parties?
Clue's privacy policy permits sharing aggregated, de-identified health data with research partners. The free tier is funded by advertising, which involves some data processing. Clue has not faced FTC enforcement action, but the ad-supported model means health data contributes to their revenue.
Can I use Flo for free?
Can I use Clue for free?
Which app has better data export?
Still have questions?
Try Horiva free — no data sold, everRelated Comparisons
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