TLDR
Flo is a fertility and cycle prediction app with perimenopause features added later. It settled FTC charges in 2021 for sharing health data with Facebook and Google. Horiva is built specifically for perimenopause, with on-device storage and a PDF report for doctor appointments.
Quick Verdict
Flo is a fertility and cycle prediction app with perimenopause features added later. It settled FTC charges in 2021 for sharing health data with Facebook and Google. Horiva is built specifically for perimenopause, with on-device storage and a PDF report for doctor appointments.
Source: Federal Trade Commission - In the Matter of Flo Health, Inc.
Source: Flo Health app store pricing
Source: Birkby et al., BMC Women's Health, 2023
- Flo
- Fertility-first design, FTC data-sharing settlement, no doctor report export
COMPETITOR
| Feature | Flo | Horiva |
|---|---|---|
| Monthly cost | Free + $12.99/mo | $9/mo |
| Data privacy model | Varies by app | On-device only - we never see it |
| Perimenopause support | Varies by app | Built specifically for perimenopause |
| Doctor reports | Varies by app | Yes - PDF export |
| Free entry path | Varies by app | Pick a plan first |
Horiva is $9/mo with no data selling — vs. Flo at Free + $12.99/mo.
Why Women in Perimenopause Look Beyond Flo
Flo is the most downloaded period app in the world. It is also an app whose core architecture was designed for something different: fertility tracking and cycle prediction for women with regular 28-day cycles.
Perimenopause does not produce regular 28-day cycles. It produces cycles that lengthen, shorten, double up, or disappear for months at a time. It produces symptoms - joint pain, tinnitus, brain fog, electric shock sensations - that a fertility tracker was never designed to capture.
The FTC Settlement
In 2021, the Federal Trade Commission settled charges against Flo Health for sharing user health data - including period logs and pregnancy intentions - with Facebook, Google, and AppsFlyer without disclosing this to users. The settlement required improved data practices going forward. It did not require deletion of data already shared with advertising platforms.
For women tracking perimenopause symptoms - which include mood changes, sexual health concerns, and bleeding patterns - this is not an abstract concern. These are among the most sensitive data categories a health app can hold.
Where Flo Falls Short for This Transition
The perimenopause experience in Flo is a bolted-on feature. The app still tries to predict your next period; it becomes confused when periods are months apart or stop entirely. The symptom library covers common general health symptoms but lacks the specificity that perimenopause requires. There is no doctor report export at any subscription tier.
What Horiva Is Built For
Horiva starts from the assumption that your cycles are irregular. The symptom library covers 40+ perimenopause presentations: cognitive symptoms, vasomotor symptoms, musculoskeletal changes, mood patterns, and the unusual ones (electric shock sensations, tinnitus, body odor changes) that general trackers miss.
Your data is stored on your device. Not on Horiva servers. A PDF export formats your tracking history for gynecology and endocrinology appointments. At $9/month, it costs less than Flo Premium.
Q&A
What is the best Flo alternative for perimenopause?
Horiva was built specifically for perimenopause tracking. It covers 40+ symptoms (including cognitive changes, vasomotor symptoms, and musculoskeletal changes), stores all data on-device, and generates a PDF report formatted for gynecology appointments. Flo covers perimenopause as a secondary feature and settled FTC charges in 2021 for sharing health data with Facebook and Google.
Q&A
Is there a period app for irregular perimenopause cycles?
Most period apps are optimized for regular 28-day cycles. Horiva does not assume cycle regularity - it tracks symptom patterns across irregular, lengthening, or absent cycles. Balance also handles irregular cycles better than Flo.
Q&A
Does symptom tracking actually reduce perimenopause symptoms?
Research says yes. A 2023 randomized controlled trial found a 42% reduction in physical symptoms after two weeks of structured tracking, compared to 12% in controls. A meta-analysis of 18 studies found a significant effect size of 0.73 for diary use on hot flush frequency.
PROS & CONS
Flo
Pros
- Large user base with substantial cycle data
- Broad symptom library covering general health
- AI cycle predictions work well for regular 28-day cycles
- Well-designed interface with health content
Cons
- FTC settled charges in 2021 for sharing health data with Facebook, Google, and AppsFlyer without user consent
- Built for fertility tracking - perimenopause is a secondary feature
- Cycle predictions become unreliable once cycles become irregular
- No doctor report export at any price tier
- All data stored on Flo servers regardless of subscription level
Frequently asked