Guides

What's a good alternative to Flo?

By the Plum team · Updated October 12, 2026
This page is general information, not medical advice. For questions about your own cycle or health, talk to a doctor, nurse, or other clinician who knows you.

The quick answer

Clue is the closest replacement for Flo. It tracks the same life stages, runs on iPhone and Android, and keeps data on servers in the EU. If you want something simpler on iPhone, pick Plum. It has no ads, never asks to track you, and predicts your period, fertile window and ovulation at no cost. If you want nothing to leave your phone, pick Euki. And if you only need dates, Apple’s Cycle Tracking is already in the Health app.

Why people look for a Flo alternative

The reason most people give is privacy. On January 13, 2021, the US Federal Trade Commission announced a settlement with Flo Health. The FTC alleged that Flo had promised to keep users’ health data private, then disclosed details such as the fact of a pregnancy to outside analytics and marketing services, Facebook’s and Google’s analytics divisions among them. The order required an independent review of Flo’s privacy practices and user consent before health data is shared.

Flo tells its side on its privacy portal. It says it removed the Facebook Analytics SDK in 2019, settled to avoid the costs of litigation, and then hired privacy leadership and earned ISO 27001 and 27701 certifications. Its privacy policy says it will never sell your data. Its App Store label still lists Purchases, Location, Identifiers and Usage Data under Data Used to Track You. Some people leave for a different reason. Flo is big, with a health library, chats, quizzes and calculators, and they want an app that does less.

How we chose

We make Plum, so read our paragraph about it hardest. There are no affiliate links on this page. We read each company’s own site, privacy pages and App Store listing on October 12, 2026, and we link every one below. Where a source didn’t say something, the table says “not stated”. We picked apps that are the clear answer to one reason for leaving Flo, and we left prices out because they change by country.

Clue, for the closest like-for-like switch

Clue is made by BioWink GmbH in Berlin. Like Flo, it covers period tracking, trying to conceive, pregnancy and perimenopause, and it’s on iPhone and Android. The free plan includes basic cycle predictions. Clue Plus adds advanced predictions, tracking modes and Clue Connect for sharing your cycle. Its privacy policy says all data is stored on servers in the EU and that the health data you track is never shared with or sold to advertisers. Its App Store label lists Identifiers under Data Used to Track You. If you want Flo’s breadth with a different company behind it, Clue is the swap.

Plum, for a simpler iPhone tracker with no ads or tracking

Plum is our app. Logging a day takes a tap or two, and you can track 27 things in four groups, from flow and pain to mood, sleep, sex and pregnancy tests. It predicts your next period, fertile window and ovulation, and adjusts as you log. It shows how much your cycles vary, as plus or minus a number of days. Reminders come three days before and the day before at 7 pm, then at 9 am on the day. It tracks seven birth control methods. Friends can join a private group by invite link and see each other’s period days on one timeline, while symptoms and moods stay private.

Logging, the calendar, predictions, reminders, birth control tracking and groups come with the app at no cost. Plum Premium adds insights and the full phase tips. There are no ads, and Plum never sells your data or uses it for advertising. It never asks to track you, so the App Store label has nothing under Data Used to Track You. Your history is stored encrypted on Plum’s servers with a copy on the phone, so it isn’t on-device only. It’s iPhone only, with no Apple Watch app, no widget and no Apple Health sync, and it can’t import from Flo. What Plum does with your data names every service that gets anything.

Euki, for keeping everything on your phone

Euki is run by a US nonprofit and is open source. Its privacy FAQ says everything you enter is stored only on your device, with no accounts, no email and no cloud servers, so it has nothing to sell. It predicts your period, tracks symptoms and pregnancy, and is in English and Spanish on iPhone and Android. The cost of that privacy is real. A lost phone takes your history with it, and a forgotten PIN means starting over.

drip, for open source and temperature-based fertility

drip is a volunteer open-source project whose site says everything you enter stays on your device. It tracks periods and, if you choose, fertility by the symptothermal method with temperature and cervical mucus. Its FAQ explains the maths and links the code. It’s on iPhone and Android, in English only.

Apple Cycle Tracking, for the tracker you already have

The Health app on every iPhone has Cycle Tracking. You can log periods, symptoms, spotting and basal body temperature, and it predicts your next period and a six-day fertile window. Apple says health data synced to iCloud is end-to-end encrypted when two-factor authentication is on. It suits you if dates and a prediction are enough.

Flo with Anonymous Mode, if you’d rather stay

If you like Flo’s features, Flo’s own fix is Anonymous Mode. Flo says it stops your name, email and IP address from being linked to your health data, and that even Flo can’t identify you. It’s free for every user. Flo also says switching is permanent and that cross-device sync, Flo for Partners and Secret Chats don’t work in it.

Side by side

PlatformsWhere your data livesData Used to Track YouAds in the app
ClueiPhone, AndroidServers in the EUIdentifiersNot stated
PlumiPhonePlum’s servers, encrypted, with a copy on the phoneNothingNone
EukiiPhone, AndroidOn the phone onlyData Not CollectedNone
dripiPhone, AndroidOn the phone onlyData Not CollectedNone
Apple Cycle TrackingiPhone, Apple WatchOn the phone, with an end-to-end encrypted iCloud backupBuilt in, no listingNone
FloiPhone, AndroidFlo’s servers, with Anonymous Mode as an optionPurchases, Location, Identifiers, Usage DataNot stated

What to look for in a Flo replacement

  • Read the Data Used to Track You section on the App Store listing before you install. It’s the developer’s own answer, and it’s one line long.
  • Decide whether you want a backup. On-device apps can’t leak from a server, and they also can’t restore your history on a new phone.
  • Check how you’ll move your history. Export from Flo first, and see whether the new app reads that file.
  • Don’t use any of these as birth control. A fertile window from your dates is an estimate.

Sources

Common questions

What is the best alternative to Flo?

Clue is the closest like-for-like replacement for Flo. It covers periods, trying to conceive, pregnancy and perimenopause, runs on iPhone and Android, and stores data on servers in the European Union. Plum is the pick if you want a simpler iPhone tracker with no ads that never asks to track you. It predicts your period, fertile window and ovulation at no cost. Euki is the pick if you want nothing to leave your phone at all. We make Plum, and we read every other company's pages on October 12, 2026.

Why are people leaving Flo?

Most people who leave Flo give privacy as the reason. In January 2021 the US Federal Trade Commission announced a settlement with Flo Health over allegations that it shared sensitive health information, such as the fact of a pregnancy, with outside analytics and marketing services after promising to keep it private. Flo's own privacy portal says it settled to avoid the costs of litigation and has since overhauled its privacy program. Others leave because they want a smaller app with fewer features to scroll past.

Is Flo safe to use now?

Flo's current privacy policy says it will never sell your data, and its privacy portal describes encryption, ISO 27001 and 27701 certifications it renews each year, and an Anonymous Mode that detaches your name, email and IP address from your health data. Its App Store label still lists Purchases, Location, Identifiers and Usage Data under Data Used to Track You. If you stay, turn on Anonymous Mode, and know that Flo says it can't be undone and turns off cross-device sync and Flo for Partners.

Is there a period tracker like Flo without ads?

Plum, Euki, drip and Apple's Cycle Tracking in the Health app have no ads. Of those, Plum is the closest to Flo in day-to-day use, with predictions for your period, fertile window and ovulation, reminders and symptom logging. It's iPhone only and keeps your history on its servers, encrypted, so a new phone picks up where you left off. Euki and drip keep everything on the phone and have no account at all.

Can I move my data from Flo to another app?

Flo's privacy portal says you can export your data in a standard format. Whether another app can read that file is up to the other app. Plum imports from Clue but not from Flo, so you'd start fresh or add past period dates by hand. The drip project links a volunteer-built Flo-to-drip converter on its FAQ, and says it neither built nor runs it.

Which Flo alternative keeps my data only on my phone?

Euki and drip both store everything on the device, with no account and no server. Euki's privacy FAQ says there are no cloud servers and nothing is collected, and both apps' App Store labels read Data Not Collected. The trade is that a lost phone takes your history with it. Apple's Cycle Tracking keeps data on the phone too and can back it up to iCloud with end-to-end encryption.

Track it with PlumA period tracker for iPhone with no ads.

Plum logs your period in two taps and predicts your next period, fertile window and ovulation. We never sell your data.

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What's a good alternative to Clue?Plum is a simpler iPhone tracker with no ads or tracking that imports your Clue history. Euki keeps data on your phone, and Flo has more features.Which period tracker apps don't sell your data?Which period apps don't sell your data, don't track you, or keep it on your phone. Euki, drip, Apple and Plum, checked against App Store labels.Period tracker apps made by womenWhich period tracker apps were founded by women and which weren't. Clue, Natural Cycles, Stardust, Flo, Euki and more, checked against their own pages.
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