Flo Alternatives: Period Trackers to Consider in 2026

By the Mochi Moon team · Updated October 13, 2026 · 7 min read

Disclosure: This article is published by Mochi Moon, which is one of the alternatives listed. We aim to be fair to every app, including Flo. Details are as of October 2026 and come from each company's site or App Store listing. Check current features and prices before you decide.

If you want a Flo alternative, the main options are Clue (detailed tracking and education), Apple Cycle Tracking (built in and minimal), Natural Cycles (a birth control app that uses temperature), Stardust (a moon-themed tracker) and Mochi Moon (a cozy iPhone app with partner sharing). The best one depends on your priorities: features, price, privacy or purpose.

Quick summary: Flo is a full-featured tracker with real strengths, including pregnancy and perimenopause tools and an Anonymous Mode. People look elsewhere for price, privacy preferences, simplicity or different features. Below are the alternatives and what each does best. None of these predictions are birth control unless an app is specifically cleared as one.

What Flo does well

Fairness first. According to its App Store listing, Flo tracks regular and irregular periods, predicts ovulation, offers Pregnancy Mode and perimenopause tools, and includes "Flo for Partners." Core tracking is free, with an optional Premium subscription for extras like daily insights, expert videos and a health assistant. It also offers an Anonymous Mode designed so health data is not linked to personal identifiers. Flo states it is not a birth control method.

If you like Flo, you do not have to switch. The rest of this article is for people who want to compare.

About the FTC settlement

Many people asking about alternatives have heard about Flo's FTC case. Here is what the FTC itself published, without embellishment.

January 13, 2021: The FTC announced a proposed settlement. It alleged that Flo Health shared health data from millions of users of its Flo Period & Ovulation Tracker app with third parties that provided marketing and analytics services, including Facebook's and Google's analytics divisions, after promising to keep the data private. The proposed terms included an independent review of its privacy practices and getting users' consent before sharing health information.
June 22, 2021: The FTC finalized the order. Flo was required to notify affected users, tell third parties that received the data to destroy it, and not misrepresent how it collects, uses and protects data.

Those are the FTC's allegations and the settlement terms. The FTC press releases do not state whether Flo admitted or denied the allegations. This happened years ago, and you should read Flo's current privacy policy and App Store privacy label for how it handles data today. Our guide to period tracker privacy explains how to read them.

The alternatives

Clue

Clue is a Berlin-based tracker with a science-forward style. Its listing describes 200+ symptoms and experiences, period and fertile-window predictions, modes for conceiving, pregnancy and perimenopause, and 400+ educational articles. Clue Plus adds deeper insights, and Clue Connect lets you share your cycle with someone. The US App Store listing shows $9.99 for monthly options and $39.99 for annual ones. Clue's website says it will never sell your health data or share it with any authority. The listing says the app should not be used as a contraceptive.

Best for: people who want detailed logging and educational content.

Apple Health Cycle Tracking

Built into iPhone and Apple Watch. It logs periods and symptoms, predicts periods and a six-day fertile window using the calendar method, and can use wrist temperature on certain Apple Watch models for retrospective ovulation estimates. Apple says that with two-factor authentication, Cycle Tracking data synced to iCloud is end-to-end encrypted. It is not contraception. It is also minimal, with fewer extras and education than dedicated apps.

Best for: people who want something simple, already on their phone, and not another account.

Natural Cycles

A fertility-awareness app that states it is FDA-cleared as birth control. It uses daily temperature readings, with its own band or a compatible wearable, to label days green or red. The company reports 93% typical-use and 98% perfect-use effectiveness, and notes it does not protect against STIs and does not guarantee you cannot get pregnant. It is subscription-based and requires a measuring device, so it is a different category from a casual period diary.

Best for: adults who want a hormone-free, data-driven birth control option and are willing to measure daily.

Stardust

A moon-and-ritual styled tracker. Its site mentions features like Moon Magic, which syncs with your cycle, and states "Your data is private, period." We could not verify current pricing. Mozilla Foundation has published an independent privacy review of the app, which is worth reading along with Stardust's own privacy and health data policies.

Best for: people who enjoy an astrology-adjacent, aesthetic approach.

Mochi Moon

An iPhone app (iOS 17+) launching on the App Store this fall, with a hand-drawn pixel-art style and a pet companion. It tracks periods, flow, symptoms, moods, energy and sleep, predicts your next period and estimates a fertile window (estimates only, not birth control), and includes a phase guide, widgets and reminders.

Its distinctive feature is the partner side. A partner installs the same free app, picks "I'm here for my partner," and after you invite them sees only what you choose to share, such as your current phase, what tends to help and daily "quests."

Data stays on your iPhone, partner sharing uses your own private iCloud, and there are no ads, third-party analytics or data selling. There is a free tier; Plus is $29.99 a year with a 7-day free trial, or $5.99 a week, and it unlocks for both partners if either buys it. It is iPhone-only and new.

Best for: people who want a cozy design, local-first data and optional partner sharing.

How to decide

Want the most features? Compare Flo and Clue directly.
Want the simplest option? Try Apple Cycle Tracking.
Need birth control? Natural Cycles is the one here that states it is cleared for that, but talk to a healthcare professional about what suits you.
Care most about privacy? Read the privacy label and policy for each app, not just the marketing. See are period tracking apps safe?
Want a full comparison? Read our best period tracker apps guide.

You can also try more than one. Most have free tiers, and you can export or delete your data if you leave, depending on the app.

Before you switch

Switching mid-cycle is fine, but you may lose predictions until the new app has a few cycles of data. Predictions are estimates either way. See how accurate are period tracker predictions? If you are new to logging, start with how to track your cycle.

And as always, see a doctor for severe pain, very heavy bleeding, missed periods for three months or more, or symptoms that affect your daily life.

FAQ

Why do people look for Flo alternatives?

Common reasons include price, privacy preferences, wanting a simpler interface, or wanting a different feature set such as partner sharing or birth control. Flo is widely used and has strengths too, so it depends on your priorities.

What was the FTC settlement with Flo?

In January 2021 the FTC announced a proposed settlement with Flo Health over allegations that it shared users' health data with third-party analytics and marketing firms despite promising privacy. The order was finalized in June 2021. The FTC press releases do not state whether Flo admitted or denied the allegations.

What is the simplest alternative to Flo?

Apple's Cycle Tracking, built into the Health app, is a minimal option on iPhone. Apple says that with two-factor authentication, Cycle Tracking data synced to iCloud is end-to-end encrypted.

Can any alternative be used as birth control?

Natural Cycles states it is FDA-cleared as a birth control app and requires daily temperature readings. Most other trackers, including Flo, Apple and Clue's listing, say they should not be used as contraception.

Mochi Moon

Mochi Moon is a cozy pixel-art cycle tracker with a phase guide, predictions and an optional free companion app for your partner.

Learn more →

Sources

This article is general information, not medical advice. Everyone's cycle is different. If you have severe pain, very heavy bleeding, missed periods for 3 months or more, or symptoms that affect your daily life, talk to a doctor. Read our editorial policy.