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Healthcare · head to head

Flo vs Oracle Clinical One

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
Oracle Clinical One logo

Oracle Clinical One

Healthcare

Unified clinical trial data collection and randomisation on one Oracle Life Sciences platform

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.; Oracle Clinical One nothing about the commercial terms is published, so cost, implementation length and validation scope all emerge inside an enterprise sales process, and comparison shopping requires running parallel procurements.
  • They diverge on capability: Flo covers Cycle and ovulation tracking, Oracle Clinical One covers Unified platform.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Flo and Oracle Clinical One actually diverge.

Attributes where Flo and Oracle Clinical One differ
AttributeFloOracle Clinical One
Starting priceFreeOn request
Pricing modelFree with a Premium subscriptionquote
Free tierYesNo
PlatformsiOS, Android, WebWeb, iOS, Android

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 Oracle Clinical One

  • Unified platform
  • Data collection
  • Randomisation and supplies
  • No-code study build
  • Regulatory compliance
  • Mid-study changes
  • Integrations
  • Cloud delivery

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 Oracle Clinical One
  • 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 Oracle Clinical One
  • A buyer wanting to compare Flo directly against Clue on published data practices before choosing which app to trust with this informationnot Oracle Clinical One
  • Someone who wants pregnancy tracking content alongside cycle tracking in one app rather than switching apps mid-pregnancynot Oracle Clinical One

Oracle Clinical One

  • A sponsor running a complex Phase III where randomisation errors between separate EDC and RTSM vendors have already cost timenot Flo
  • A pharmaceutical company already on Oracle Clinical or InForm that needs a supported migration path off end-of-life systemsnot Flo
  • A trial with adaptive randomisation and drug supply forecasting that would otherwise need custom programming per amendmentnot Flo
  • A CRO standardising study build across many sponsor programmes on one validated platformnot 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.

Oracle Clinical One

  • Nothing about the commercial terms is published, so cost, implementation length and validation scope all emerge inside an enterprise sales process, and comparison shopping requires running parallel procurements.
  • Placing data collection and randomisation with a single vendor concentrates risk: an outage or a defect affects both of the systems your sites cannot work without.
  • Mid-study amendments are routine in trials but flow through the vendor change control process, and change orders are where the real cost of an Oracle trial platform accumulates after signature.
  • Implementation and study build require specialist staff or Oracle services, so the practical time from contract to first patient in is measured in months, not weeks.
  • It is aimed squarely at sponsors and CROs with established trial operations, and a small biotech running its first study will find the platform, the contracting and the validation burden heavier than its team can absorb.

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

Oracle Clinical One

On request
  • Clinical One Data Collection$undefined/year
    • Pricing only through Oracle sales
    • Priced against study count, sites and subjects
    • Study build and configuration services quoted separately
  • Clinical One Randomization and Supplies Management$undefined/year
    • Quoted alongside or independently of Data Collection
    • Randomisation strategy configuration included in the service
    • Supply forecasting and kit management

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 Oracle Clinical One if

  • You need unified platform.
  • You work on Web, iOS, Android.
  • You also want data collection.
Oracle Clinical One review

Questions people ask

Is Flo or Oracle Clinical One better?
Neither clearly leads. Flo starts at Free and Oracle Clinical One at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flo or Oracle Clinical One?
Flo has a free tier; the other does not. Paid plans start at Free for Flo and On request for Oracle Clinical One.
Does Flo or Oracle Clinical One run on more platforms?
Flo runs on iOS, Android, Web. Oracle Clinical One runs on Web, iOS, Android.
Can I use Flo for free?
Yes. Flo has a free tier, so you can try it without paying. Oracle Clinical One 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 Oracle Clinical One is typically brought in for.
What can Flo do that Oracle Clinical One cannot?
Flo covers Cycle and ovulation tracking, Pregnancy mode, Anonymous Mode, Symptom and mood logging. Oracle Clinical One covers Unified platform, Data collection, Randomisation and supplies, No-code study build.

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.

Oracle Clinical One: What replaced Oracle Clinical and InForm?

Clinical One is the current Oracle Life Sciences platform, and sponsors on the older Oracle Clinical and InForm products are the primary migration audience.

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.

Oracle Clinical One: Can I buy randomisation without data collection?

Yes. Clinical One Randomization and Supplies Management can integrate with a third-party EDC if you want to keep an incumbent capture system.

Flo: Is Flo free?

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

Oracle Clinical One: Is pricing published?

No. Every element, including licence, study build, implementation and validation, comes through Oracle sales.

Oracle Clinical One: Is it validated for regulated trials?

It is delivered as a validated cloud service with GxP documentation and Part 11 aligned audit trails, but sponsor-level validation of your own configuration remains your responsibility.

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