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Healthcare · head to head

Flo vs Paige

Flo logo

Flo

Healthcare

Period and cycle tracking app that settled with the US FTC in 2021 over sharing health data with third parties despite promising not to

From
Free
Rated
-
Full reviewWebsite
Paige logo

Paige

Healthcare

Digital pathology AI holding the first FDA De Novo authorisation for a pathology algorithm, now part of Tempus

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Flo has a free tier, so it costs nothing to try first.
  • Each has a real cost: Flo flo Health settled with the US FTC in 2021 over allegations it shared sensitive health data, including pregnancy and menstruation details, with Facebook, Google and other third parties despite telling users the data would stay private, a fact directly relevant to how much a user should trust current privacy claims without independently checking the published policy.; Paige the FDA authorisation is confined to prostate core needle biopsies, on compatible scanners, viewed through FullFocus, as an adjunct only; every other tissue type and every grading claim is outside that authorisation in the United States.
  • They diverge on capability: Flo covers Cycle and ovulation tracking, Paige covers Paige Prostate Detect.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Flo and Paige actually diverge.

Attributes where Flo and Paige differ
AttributeFloPaige
Starting priceFreeOn request
Pricing modelFree with a Premium subscriptionquote
Free tierYesNo
PlatformsiOS, Android, WebWeb, Cloud, On-premise

Identical on both: user rating (Not yet rated), category (Healthcare).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Flo

  • Cycle and ovulation tracking
  • Pregnancy mode
  • Anonymous Mode
  • Symptom and mood logging
  • Expert content library
  • Community and forums

Only in Paige

  • Paige Prostate Detect
  • Paige Prostate Grade and Quantify
  • Perineural invasion detection
  • Breast and lymph node applications
  • FullFocus viewer
  • Foundation models
  • OmniScreen
  • Paige Alba

What people use each for

The jobs each tool is most often brought in to do.

Flo

  • Someone tracking cycle and ovulation who wants to weigh app convenience against the sensitivity of the data being loggednot Paige
  • A user in a jurisdiction with legal risk around reproductive health data who wants to check Anonymous Mode and current data sharing policy before logging pregnancy or fertility attemptsnot Paige
  • A buyer wanting to compare Flo directly against Clue on published data practices before choosing which app to trust with this informationnot Paige
  • Someone who wants pregnancy tracking content alongside cycle tracking in one app rather than switching apps mid-pregnancynot Paige

Paige

  • A reference laboratory processing high volumes of prostate core needle biopsies where a second read on every case is not staffablenot Flo
  • A pathology department already digitised that wants a documented safety net against missed small foci of cancernot Flo
  • A hospital laboratory struggling to recruit uropathology subspecialists and needing consistency across generalist reportingnot Flo
  • A pharmaceutical company needing consistent biomarker scoring across trial sites rather than site-by-site pathologist variabilitynot Flo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Flo

  • Flo Health settled with the US FTC in 2021 over allegations it shared sensitive health data, including pregnancy and menstruation details, with Facebook, Google and other third parties despite telling users the data would stay private, a fact directly relevant to how much a user should trust current privacy claims without independently checking the published policy.
  • Reproductive health data, including logged periods, fertility attempts and pregnancy status, has been the subject of law enforcement data requests in some jurisdictions following changes to reproductive rights law, and cloud-stored logs are a real category of exposure regardless of a vendors intentions.
  • Anonymous Mode, the privacy feature introduced after the settlement, is a setting that must be checked and understood rather than assumed, and its exact scope and default status should be verified in the current privacy policy rather than taken from marketing copy.
  • Free tier predictions rely on self-reported symptom data and general population models, so accuracy for irregular cycles or specific medical conditions is limited compared with clinical tracking.
  • The subscription auto-renews and, like most mobile subscriptions, must be cancelled through app store account settings rather than inside the app itself.

Paige

  • The FDA authorisation is confined to prostate core needle biopsies, on compatible scanners, viewed through FullFocus, as an adjunct only; every other tissue type and every grading claim is outside that authorisation in the United States.
  • The algorithm is worthless without a digital pathology programme already running, and slide scanning, storage and workflow typically cost far more than the software licence.
  • Tempus acquired Paige in 2025, so the roadmap now competes for attention inside a genomics-led business, and the pathology-only buyer is no longer the primary customer.
  • Scanner compatibility is a hard constraint rather than a preference, and a laboratory with an unsupported scanner fleet cannot use the authorised indication at all.
  • Pricing is per case or per slide and unpublished, so a laboratory cannot model cost per reported case without entering a sales process.

Pricing, plan by plan

Flo

Free
  • Flo Premium$11.99/month
    • Free tier covers core cycle tracking, predictions and symptom logging
    • Premium adds deeper personalised insights and expert content, around $11.99 a month
    • Annual and lifetime purchase options typically offered at a lower effective rate

Paige

On request
  • Paige clinical applications$undefined/year
    • Priced per case or per slide analysed under annual agreement
    • Prostate, breast and other applications licensed separately
    • Requires compatible whole slide scanner and the FullFocus viewer for the authorised indication

Which should you pick?

Choose Flo if

  • You need cycle and ovulation tracking.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want pregnancy mode.
Flo review

Choose Paige if

  • You need paige prostate detect.
  • You work on Web, Cloud, On-premise.
  • You also want paige prostate grade and quantify.
Paige review

Questions people ask

Is Flo or Paige better?
Neither clearly leads. Flo starts at Free and Paige at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flo or Paige?
Flo has a free tier; the other does not. Paid plans start at Free for Flo and On request for Paige.
Does Flo or Paige run on more platforms?
Flo runs on iOS, Android, Web. Paige runs on Web, Cloud, On-premise.
Can I use Flo for free?
Yes. Flo has a free tier, so you can try it without paying. Paige starts at On request.
What is Flo best used for?
Flo is most often used for someone tracking cycle and ovulation who wants to weigh app convenience against the sensitivity of the data being logged, a user in a jurisdiction with legal risk around reproductive health data who wants to check anonymous mode and current data sharing policy before logging pregnancy or fertility attempts, a buyer wanting to compare flo directly against clue on published data practices before choosing which app to trust with this information, someone who wants pregnancy tracking content alongside cycle tracking in one app rather than switching apps mid-pregnancy. Of those, someone tracking cycle and ovulation who wants to weigh app convenience against the sensitivity of the data being logged and a user in a jurisdiction with legal risk around reproductive health data who wants to check anonymous mode and current data sharing policy before logging pregnancy or fertility attempts are not what Paige is typically brought in for.
What can Flo do that Paige cannot?
Flo covers Cycle and ovulation tracking, Pregnancy mode, Anonymous Mode, Symptom and mood logging. Paige covers Paige Prostate Detect, Paige Prostate Grade and Quantify, Perineural invasion detection, Breast and lymph node applications.

Answered from the vendors’ own pages

Flo: What happened with the FTC in 2021?

The US FTC alleged Flo Health shared sensitive health data, including pregnancy and menstruation details, with third parties like Facebook and Google despite promising to keep it private. Flo settled without admitting liability, agreeing to obtain consent for future sharing and to an independent privacy review.

Paige: What exactly is FDA authorised?

Paige Prostate Detect, as an adjunct for identifying areas of interest on digitised prostate core needle biopsy slides, viewed through the Paige FullFocus viewer on a compatible scanner. Nothing else in the portfolio holds that authorisation in the United States.

Flo: What is Anonymous Mode?

A privacy setting Flo states disconnects entered health data from an identifiable profile. Check the current app and privacy policy for whether it is on by default or must be turned on manually, since this affects what data is linked to your identity.

Paige: Is the European position broader?

Yes. The Paige Prostate suite including grading and quantification received IVDR certification in 2025, which covers more than the United States authorisation.

Flo: Is Flo free?

Core cycle tracking and predictions are free. Deeper personalised insights and expert content require Flo Premium.

Paige: What did the pivotal study measure?

Pathologist cancer detection on individual slide images improved, with reported reductions in false negative and false positive readings. It measured pathologist performance with the tool, not standalone algorithm accuracy.

Paige: Who owns Paige now?

Tempus AI acquired Paige in 2025. Products remain branded Paige.

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