Caria vs Flo vs Clue for perimenopause
One of these was built for the menopause transition. Two were built for cycles and extended into it.
Caria is the purpose-built one: daily symptom score, structured CBT, nutrition and mindfulness programmes, and an active community. $49.99/year or $9.99/month, free download.
Clue is minimalist and science-forward, holds 4.8 stars from a very large review base, and passed one million paid subscribers in May 2025. Clue Plus $39.99/year or $9.99/month.
Flo is denser and more guided, with a large free tier and an AI assistant on premium at around $39.99/year. It also carries a privacy record that belongs in any honest comparison: an FTC settlement in 2021 and a class action settled in September 2025 over sharing period and pregnancy data with third parties.
None of the three models HRT as a regimen. All log medication as an event. That is the gap HormoneLog is being built into, and HormoneLog is in development and not released.
Side by side
| Caria | Flo | Clue | HormoneLog (ours) | |
|---|---|---|---|---|
| Built for | Menopause transition | Cycles, with a peri mode | Cycles, with a peri mode | HRT record-keeping |
| Price | $49.99/yr or $9.99/mo | ~$39.99/yr premium | $39.99/yr or $9.99/mo | Planned $49.99/yr |
| Free tier | Yes | Large, with ads | Yes, with upgrade prompts | Planned |
| Symptom score | Daily | Yes | Yes | By clinical domain |
| Programmes / CBT | Yes | Guided content | No | No |
| Community | Yes, strong | Yes | No | No |
| HRT as a regimen | No | No | No | Yes |
| Clinician-facing output | Limited | No | No | Appointment summary |
| Notable | Anti-dismissal positioning | FTC + class action settlements | 4.8★, 1M+ paid subs | In development |
What each is for
Caria
The one designed for this transition rather than adapted into it. The programme structure is real: CBT, nutrition and mindfulness content delivered in sequence, plus a community that is genuinely active. Its positioning leans on the anti-dismissal narrative that runs through the whole category.
The recurring criticism is notification and homework pressure. If structure motivates you it is a strength. If it does not, it becomes another thing you are failing at, and people say so in reviews.
Best for: wanting structure and other people, not just a log.
Clue
Minimalist, gender-neutral, clean typography, consistently praised for clarity. 4.8 stars from a very large review base, one million paid subscribers as of May 2025, and a free-to-paid conversion that roughly doubled between 2023 and 2025 by the company's own account.
Worth correcting a claim in circulation: that Clue's rating fell to around three stars. It is inaccurate. The fair criticism is upgrade prompting on the free tier.
Best for: still cycling, wanting a clean tracker with a science-forward tone.
Flo
The category's onboarding benchmark and the densest daily experience — around seventy onboarding screens, constant micro-reinforcement, an AI assistant on premium. Large free tier with ads.
The privacy record belongs in the comparison. Flo settled with the FTC in 2021, and settled a class action in September 2025, both relating to sharing period and pregnancy data with third parties. That is a matter of public record. It does not make Flo unusable, and it is a reasonable thing to weigh when deciding where health data lives.
Best for: wanting the most guided experience and the biggest free tier, with that record in view.
HormoneLog
Ours, disclosed, in development and not released. Built for the one job none of the three does: HRT as a regimen over time — what you take, at what dose, in what formulation, since when, and what changed — against a symptom timeline you can hand to a clinician.
It does not do programmes, community, cycle prediction or education. It is narrow deliberately, and if what you want is any of those, one of the three above is the better answer today and will remain so.
Two things to check whichever you choose
Privacy. The 2023 systematic review of 28 UK menopause apps found 32 percent indicated third-party data sharing. Read the policy rather than the landing page. Health app privacy.
Whether it produces anything a clinician can use. The same review found most apps lacked any mechanism for sharing data with a provider or exporting structured records — which is strange, since preparing for appointments is a main reason people track at all. What to take to your first appointment.
Prices are as published in September 2026, taken from app-store listings and vendor pages rather than a live checkout, and they vary by region. Information, not medical advice. HormoneLog is not affiliated with, endorsed by, or licensed by Caria, Flo, Clue or any organisation named here.
More in this section
About HormoneLog
HormoneLog is an iOS app from Baker Ventures LLC for tracking perimenopause and menopause symptoms and keeping an HRT record: what you took, at what dose, from when, and what changed afterwards. It is built for the appointment, where "it has been bad lately" is worth far less than a dated record of frequency and severity. The app is in development.
HormoneLog is a record-keeping tool. It does not diagnose, does not score you, and makes no claim about symptom relief. The guides on this site link to NICE, the NHS, the Menopause Society and peer-reviewed sources, and say plainly where the evidence is thin. Everything here is free and needs no account.
Questions and answers
Is Flo or Clue better for perimenopause?
Both are excellent cycle trackers that extended into perimenopause rather than being built for it. Clue is minimalist and science-forward at 39.99 dollars a year; Flo is denser and more guided at around 39.99 with a substantial free tier. Neither models HRT as a regimen.
What does Caria do that Flo and Clue do not?
Caria is built for the menopause transition specifically rather than extended into it, with a daily symptom score, structured CBT, nutrition and mindfulness programmes, and an active community. Premium is 49.99 dollars a year or 9.99 a month.
Is Clue's rating really 4.8?
Yes. Clue holds a 4.8-star rating from a very large review base and passed one million paid subscribers in May 2025. A claim you may see that Clue's rating fell to around three stars is inaccurate and should be disregarded.
Did Flo have a privacy problem?
Flo settled with the FTC in 2021 and settled a class action in September 2025 relating to sharing period and pregnancy data with third parties. That is a matter of record and it is reasonable to weigh it when choosing where to put health data.
Which of these tracks HRT properly?
None of them. All three log medication as an event rather than modelling a regimen with dose, formulation and change dates, which is the record that matters when titrating over months. That gap is what HormoneLog is being built for, and it is in development rather than available.
HormoneLog. “Caria vs Flo vs Clue for perimenopause.” Baker Ventures LLC, September 6, 2026. https://hormonelog.bakerventuresstudio.com/compare/caria-vs-flo-vs-clue-for-perimenopause/