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Healthcare · head to head

Clue vs Zanda Health

Clue logo

Clue

Healthcare

Period and cycle tracking app owned by German company Biowink, positioned around science based tracking and a published stance against sharing data with law enforcement

From
Free
Rated
-
Full reviewWebsite
Zanda Health logo

Zanda Health

Healthcare

Practice management and clinical notes for allied health clinics, formerly Power Diary

From
$19/month
Rated
-
Full reviewWebsite

The short version

  • Only Clue has a free tier, so it costs nothing to try first.
  • Each has a real cost: Clue clues stated policy on not sharing data with law enforcement without a valid legal process is the companys own published position and legal interpretation, not an independent guarantee, and it can still be compelled to comply with a legally binding request under EU or other applicable law.; Zanda Health the 2024 rename from Power Diary means most third party reviews, integration guides and community answers still sit under the old name, so buyers researching Zanda Health find a thin trail and may wrongly conclude it is a new and unproven product.
  • They diverge on capability: Clue covers Cycle and symptom tracking, Zanda Health covers Unlimited admin users.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Clue and Zanda Health actually diverge.

Attributes where Clue and Zanda Health differ
AttributeClueZanda Health
Starting priceFree$19/month
Pricing modelFree with a Plus subscriptionPer user per month
Free tierYesNo
PlatformsiOS, AndroidWeb, 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 Clue

  • Cycle and symptom tracking
  • Cycle insights and patterns
  • Research partnerships
  • EU-based data hosting
  • Fertility and conception mode
  • Perimenopause and other life stage tracking

Only in Zanda Health

  • Unlimited admin users
  • Australian funder billing
  • Clinical note templates
  • Two way SMS
  • Telehealth Pro
  • Practitioner rostering
  • Client portal
  • BizzyAI Scribe

What people use each for

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

Clue

  • Someone specifically weighing data jurisdiction and legal exposure when choosing a period tracking app, given Clues EU basis and published stance on law enforcement requestsnot Zanda Health
  • A user who wants cycle tracking positioned around scientific research partnerships rather than lifestyle or community contentnot Zanda Health
  • A buyer comparing Clue directly against Flo on current published privacy policy language before choosing which app to trustnot Zanda Health
  • Someone tracking perimenopause or other non-standard cycle stages that some period apps do not support wellnot Zanda Health

Zanda Health

  • A five physiotherapist clinic in Melbourne that bulk bills Medicare and wants claiming inside the diary rather than a separate portalnot Clue
  • A psychology group practice with more reception staff than clinicians, where per seat pricing elsewhere would double the billnot Clue
  • A UK osteopathy practice moving off paper diaries that needs online booking and card payment without an implementation projectnot Clue
  • A multi site podiatry business that needs room and equipment allocation alongside practitioner availabilitynot Clue

Where each one falls short

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

Clue

  • Clues stated policy on not sharing data with law enforcement without a valid legal process is the companys own published position and legal interpretation, not an independent guarantee, and it can still be compelled to comply with a legally binding request under EU or other applicable law.
  • Deeper cycle insights and predictions, the features most likely to justify tracking in the first place, are gated behind the Clue Plus subscription rather than fully free.
  • Being a smaller company than some competitors, Clue has less capital and legal resource to contest large-scale legal requests than a larger, better-funded rival might, despite its stated intent to do so.
  • Research partnerships using anonymised user data, while opt-in, still mean user-derived data can be used in ways beyond direct app functionality, and users should check current consent settings.
  • Cycle predictions rely on self-reported data and general population models, so accuracy for irregular cycles or specific medical conditions remains limited regardless of which app is used.

Zanda Health

  • The 2024 rename from Power Diary means most third party reviews, integration guides and community answers still sit under the old name, so buyers researching Zanda Health find a thin trail and may wrongly conclude it is a new and unproven product.
  • North American billing is not properly served: there is no claims clearinghouse and superbill handling is basic, so a United States practice will need a separate revenue cycle tool and will pay for two systems.
  • Pricing is quoted in United States dollars while the company, support hours and product depth are Australian, so buyers outside those two time zones get support with an overnight lag on urgent clinical scheduling problems.
  • SMS is billed per message beyond the plan allowance and a dedicated number is required in the United States and Canada, so a busy clinic sending reminders and follow ups accumulates a variable monthly cost that is not visible in the headline plan price.
  • Reporting is adequate for a single clinic but weak for a group: cross site financial consolidation and practitioner productivity comparison generally end up exported to a spreadsheet, which becomes a monthly manual job as soon as you pass a handful of locations.

Pricing, plan by plan

Clue

Free
  • Clue Plus$9.99/month
    • Free tier covers core cycle tracking, logging and basic predictions
    • Clue Plus adds deeper cycle insights, extended predictions and personalised content
    • Annual Plus plans typically offered at a lower effective monthly rate

Zanda Health

$19/month
  • Starter$19/month
    • One practitioner
    • One administrative user
    • 1,000 appointments per year
  • Growth$49/month
    • Base fee plus 19 USD per additional practitioner per month
    • Unlimited free administrative users
    • Unlimited appointments
  • Telehealth Pro add-on$9/month
    • Per practitioner
    • Unlimited video consultations
    • Recording and waiting room

Which should you pick?

Choose Clue if

  • You need cycle and symptom tracking.
  • You want to start without paying.
  • You work on iOS, Android.
  • You also want cycle insights and patterns.
Clue review

Choose Zanda Health if

  • You need unlimited admin users.
  • You work on Web, iOS, Android.
  • You also want australian funder billing.
Zanda Health review

Questions people ask

Is Clue or Zanda Health better?
Neither clearly leads. Clue starts at Free and Zanda Health at $19/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Clue or Zanda Health?
Clue has a free tier; the other does not. Paid plans start at Free for Clue and $19/month for Zanda Health.
Does Clue or Zanda Health run on more platforms?
Clue runs on iOS, Android. Zanda Health runs on Web, iOS, Android.
Can I use Clue for free?
Yes. Clue has a free tier, so you can try it without paying. Zanda Health starts at $19/month.
What is Clue best used for?
Clue is most often used for someone specifically weighing data jurisdiction and legal exposure when choosing a period tracking app, given clues eu basis and published stance on law enforcement requests, a user who wants cycle tracking positioned around scientific research partnerships rather than lifestyle or community content, a buyer comparing clue directly against flo on current published privacy policy language before choosing which app to trust, someone tracking perimenopause or other non-standard cycle stages that some period apps do not support well. Of those, someone specifically weighing data jurisdiction and legal exposure when choosing a period tracking app, given clues eu basis and published stance on law enforcement requests and a user who wants cycle tracking positioned around scientific research partnerships rather than lifestyle or community content are not what Zanda Health is typically brought in for.
What can Clue do that Zanda Health cannot?
Clue covers Cycle and symptom tracking, Cycle insights and patterns, Research partnerships, EU-based data hosting. Zanda Health covers Unlimited admin users, Australian funder billing, Clinical note templates, Two way SMS.

Answered from the vendors’ own pages

Clue: Does Clue share data with law enforcement?

Clue publishes a policy stating it does not share health data with law enforcement or public authorities without a legally binding request and states it will challenge requests it considers improper. This is the companys stated position; verify the current policy directly for specifics.

Zanda Health: Is Zanda Health the same as Power Diary?

Yes. Power Diary rebranded to Zanda Health in 2024. Same company, same product line, same data.

Clue: Why does Clue emphasise being an EU company?

Clue operates under EU GDPR data protection rules and states this legal basis makes it harder for authorities outside the EU, including US authorities, to compel data disclosure than for a company based in the US.

Zanda Health: Do receptionists count as paid users?

No. On the Growth plan administrative users are unlimited and free. Only practitioners are charged.

Clue: Is Clue free?

Core cycle tracking, logging and basic predictions are free. Deeper insights and extended predictions require Clue Plus.

Zanda Health: Does it handle Medicare bulk billing?

Yes, Medicare Online, DVA and bulk billing claims are submitted from within the platform for Australian practices.

Zanda Health: Is it suitable for a United States practice?

Only partly. Charting, scheduling and telehealth work, but there is no claims clearinghouse, so US insurance billing needs a separate system.

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