Today vs Flo.
Flo is the most-installed period tracker in the world. Today tracks periods as one of four signals it reads at once. If you've been looking for something quieter, or a tracker that actually knows about your weight too, this is the short version.
What each app is for.
Flo is a menstrual-cycle and fertility tracker with a large editorial content library and a social/community layer. It predicts periods and fertile windows, surfaces daily insights, and has become a de-facto reference app for millions of users.
Today treats the cycle as context, not content. When you weigh yourself on cycle day 26, the number gets read through that lens. When you feel off on day 24, the app can say so, specifically, because it knows both the cycle and the mood. It's a smaller app doing a more specific job: noticing patterns across the whole body, not optimising one of them.
At a glance.
| Today | Flo | |
|---|---|---|
| Primary job | Cross-domain pattern-noticing | Period + fertility prediction |
| Domains covered | Cycle, weight, mood, food | Cycle, fertility, some symptoms |
| Reads your weight in cycle context | Yes — core feature | No — weight is not a first-class signal |
| Reads your mood in cycle context | Yes — core feature | Partial, via symptom tags |
| Social / community feed | None | Yes, prominent |
| Editorial content library | Small, curated essays | Large, daily content |
| In-app ads | None | Yes |
| Daily notifications | None | Multiple by default |
| AI partner | Yes — Anthropic Claude, terse | Yes — branded "Flo AI" chat |
| Medical / contraceptive use | No — see disclaimer | Not a contraceptive; some markets have additional certifications |
| Pricing | Free in beta; subscription planned | Freemium; paid "Premium" tier |
| Platform | iOS, Android | iOS, Android |
Pick Flo if…
You want a deep, widely-used cycle + fertility app with a large content library and community. You like a daily feed of articles. You're mainly focused on predictions — when the next period is coming, when the fertile window opens.
Pick Today if…
You want a cycle tracker that also reads your weight and mood in cycle context. You're tired of opening a period app and being handed a feed, an ad, or a notification. You want something single-player — you, your data, an AI partner that is useful in 90 seconds and then leaves you alone.
The honest bit.
Flo is not trying to do what Today is trying to do; Today is not trying to do what Flo is trying to do. The overlap is real — both apps care about the cycle — but the products are aimed at different lives. If you want a pure, mature cycle tracker, Flo is the best-known one. If you want the cycle embedded as one signal in a quiet, cross-domain partner, that's Today.
The relevant reading is Your scale is reading your hormones, not your progress, which is the clearest argument for why cycle-aware weight interpretation is a different product from standalone cycle tracking.
Today is a quiet AI health partner that correlates your weight, cycle, and mood — without ads, without a feed, without notifications.
Join the beta →Flo is a trademark of its respective owner. This page is editorial comparison content; Today is not affiliated with, endorsed by, or partnered with Flo. Feature claims reflect publicly documented behaviour at the time of writing — please verify current details on the official site. Neither Today nor Flo is a medical device or contraceptive.