leto
PCOS tools

The best PCOS apps in 2026

Dozens of apps claim to help with PCOS (now officially PMOS). Most are general cycle trackers with a PCOS label. Here are the ones actually worth your time, what each does, and how to pick.

Evidence-based · Sources cited · Updated July 2026

For free evidence-based guidance, use AskPCOS (built by the guideline authors at Monash). For free all-in-one tracking, Go Go Gaia. For a guided lifestyle program, Cysterhood. For a privacy-first general cycle tracker, Clue. The best app is the one that ties what you do to how your markers move.

The apps, compared

AskPCOSCysterhoodFloleto
What it isEvidence-based education + doctor-prep, from Monash (authors of the PCOS guideline)PCOS lifestyle program: carb-tolerance tests, recipes, low-impact workoutsThe largest general cycle tracker, with PCOS contentA 30-second phone scan turned into a vitality trend for your doctor
PCOS-specificYesYesNo (general)Not yet (early access)
CostFree~$17/mo (annual)Free; Premium ~$49.99/yrFree to try
Best forTrustworthy answers + appointment prepA guided lifestyle programFamiliar all-round trackingAn objective trend between visits

The best free option: AskPCOS

If you want answers you can trust, start with AskPCOS. It is free and built by Monash University, the same team that wrote the 2023 international PCOS guideline, so the education is straight from the source rather than a wellness brand.[1] It also has appointment-prep tools, which is exactly what shortens the diagnostic runaround.

A note on Flo and privacy

Flo is the most popular cycle tracker and it works, but PCOS data is sensitive, and Flo has a track record worth knowing: it settled with the FTC in 2021 for sharing period and pregnancy data with Facebook and Google without consent, followed by a class-action settlement in 2025.[2] If privacy matters to you, Clue (EU-based, GDPR) is a stronger general tracker, and AskPCOS or Go Go Gaia are more PCOS-focused.

What a PCOS app should actually track

Whatever you pick, the job is the same: connect behaviour to markers. Track three things. Cycle regularity is the slow outcome, worth logging month over month. Glucose is the tightest daily loop, especially with a continuous glucose monitor, and shows how meals, workouts, and supplements move your numbers.[3] A symptom-and-mood diary catches what labs miss and flags the mental health the guideline says to screen for.[1] A tool that ties these together lets you see in 8 to 12 weeks whether a protocol is working.

Where leto fits

leto is a phone-scan wellness app: a 30-second face scan turns into a vitality trend you can track and bring to your doctor. It is not a PCOS management app today, and dedicated PCOS tracking is on the way for the early-access list. If you want the objective-trend piece now, it is free to try; for PCOS-specific programs, the apps above are the better fit.

Not sure where you stand?

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Sources

  1. [1] AskPCOS app and the 2023 International Evidence-Based Guideline for the Assessment and Management of PCOS, Monash University. PMC10505534
  2. [2] FTC v. Flo Health: settlement over sharing health data (2021); related class-action settlement (2025). ftc.gov
  3. [3] Using continuous glucose monitoring in people with PCOS. Levels

This article is educational and is not medical advice. Talk to a clinician before starting, stopping, or combining treatments.