HarmoFlux vs Clue

What each app is built around

• Clue: menstrual cycle tracking, cycle-related symptom logging and educational content, centred on the cycling years.
• HarmoFlux: one continuous health history that stays useful when the reason for tracking changes — from early cycles through perimenopause, menopause and after.

Different jobs, not better and worse. If your question is about this cycle, a cycle app answers it well. If your question is what has been happening across the last six months and what you have been taking, that is the job HarmoFlux is built for.

Where HarmoFlux is different

• Life stages: the same record from first periods through the reproductive years, perimenopause, menopause and postmenopause, with no migration when your stage changes.
• Medications and supplements: dose, timing and reminders, with supplements treated as first-class entries rather than an afterthought.
• 'How I felt after taking it': a short reflection attached to the entry, recorded as timing only, never as proof of cause.
• Doctor-ready summaries: a dated PDF assembled from your own entries, plus CSV export, on the Core plan.
• Browser access: full use in a modern browser on desktop, tablet or phone, as well as on iPhone.
• Pricing: free to start, $1.99/month Core, $4.99/month Plus, with no ads and no sale of personal health data.

Where Clue may suit you better

• You want a mature, heavily refined cycle-tracking interface with years of iteration behind it.
• You want in-app educational content written around the menstrual cycle specifically.
• You want fertility-window features. HarmoFlux deliberately does not offer fertility prediction, and its projected dates are calendar arithmetic that must never be used for contraception.

We would rather you pick the right tool than the one on this page.

How to compare them yourself

Both apps change. Rather than trusting a comparison page, including this one, check these at the moment you decide:

• Current subscription price in your country, and what the free tier actually includes.
• The privacy policy: whether health data is used for advertising, which third parties process it, and how long it is kept.
• Whether you can export your data and delete your account, and how long deletion takes.
• Whether the app still fits the life stage you expect to be in three years from now.
• Whether you can use it on the devices you actually have, including in a browser.

What neither app does

• Neither is a medical device, and neither diagnoses conditions.
• Neither can establish that a medication or supplement caused a symptom.
• Neither replaces a physician or pharmacist, and neither is an emergency service.
• HarmoFlux does not check interactions between medications or supplements.

Trademark and affiliation notice

Clue is a trademark of BioWink GmbH; HarmoFlux is not affiliated with or endorsed by Clue or BioWink. This page uses no Clue branding or logos and describes Clue only from publicly available information, which may change after the facts-checked date shown above. If anything here is out of date, tell us through our support page and we will correct it.

Common questions