The Best Flo Alternatives in 2026
We compared 9 Flo alternatives by the reason you are leaving, from privacy to paywalls and birth control.
8 min read
How we review
Period Tracker Apps is run by the team that makes Hello Phase, the app ranked first on this list. We checked every app against its store listings, pricing, privacy label and recent reviews on 26 October 2026, without hands-on testing of each one, and we say plainly where another app is the better fit. There are no affiliate links, and our review method explains how we rank our own app.
Our pick
Hello Phase Our app
Best Flo alternative on Android- Needs no account and keeps your log on your phone
- Shows no ads and has no third-party trackers
- Free predictions, top symptom pattern, estimated hormone chart and export
Quick answer. Hello Phase is the best Flo alternative on Android because it needs no account, shows no ads, has no third-party trackers and keeps your log on your phone, while its free plan gives you period predictions, your top symptom pattern, an estimated hormone chart and export. drip is the best open source swap on any phone and costs nothing. Natural Cycles is the FDA-cleared pick for birth control. On iPhone, Apple Health's built-in Cycle Tracking is free.
Top picks at a glance
- 1Hello PhaseBest Flo alternative on Android
- 2
drip period & cycle trackerBest open source swap on any phone - 3
EukiNonprofit, with a decoy code - 4
Period Calendar Period TrackerFree on Android, paid for by ads - 5
My CycleFree on iPhone with nothing to buy - 6
Natural CyclesFDA-cleared birth control - 7
Clue Period & Cycle TrackerA large, well-rated app with 200+ symptoms - 8Apple Health Cycle TrackingBuilt in and free on iPhone
- 9
Period Diary: Privacy FirstiPhone privacy for a one-time price
Why do people leave Flo?
Flo is one of the most popular period apps in the US, with 4.74 stars from 2,005,621 US App Store ratings and 4.7 stars from 5.16 million Google Play reviews, and the people who leave it usually give one of three reasons.
The first is privacy, because in June 2021 the FTC finalized an order with Flo over allegations that it shared users' sensitive health data with Facebook and Google, and in August 2025 a California jury found that Meta violated state privacy law by collecting menstrual health data from Flo.
The second is the paywall, and of the 50 most recent US App Store reviews we read in mid October 2026, 31 gave Flo fewer than four stars, with one reviewer writing that Flo asked for a subscription "at the very end of a long setup process". The third is price, because the App Store lists Flo Premium at five prices from $1.99 to $59.99 without saying how long each one lasts.
Privacy
No account, log stays on your phone
- Hello Phase
- drip
- Euki
Paywall or price
Free, with no account
- Period Calendar
- My Cycle
Birth control or accuracy
Natural Cycles is FDA cleared
- Natural Cycles
- Clue
Only on iPhone? Our two picks there are Apple Health and Period Diary: Privacy First.
Is Flo safe to keep using?
Flo has changed since 2021, and whether that is enough is your call. The FTC order requires Flo to get consent before sharing health data and to submit to an independent review, and Anonymous Mode, added in 2022, lets you use Flo without personal identification. Its Apple privacy label still lists purchases, location, identifiers and usage data as "Data Used to Track You", so if privacy is your only worry, try Anonymous Mode before you switch.
How we picked the apps
On top of store listings and privacy labels, we looked for official action such as an FTC order and left out apps with no update in 18 months. Hello Phase ranks first for keeping predictions, symptom patterns and an estimated hormone chart free on Android without an account, ads or third-party trackers, and drip ranks second as the open source pick for any phone.
Side by side
| App | Why switch | Free plan | Account | Price per year (US) | Platforms |
|---|---|---|---|---|---|
| Hello Phase | Best on Android. No account, no ads, no third-party trackers, log stays on your phone | Yes. Predictions, top symptom pattern, hormone chart, CSV and PDF export | No | $39.99 for optional Plus | Android |
| drip period & cycle tracker | Best open source swap on any phone. Declares no data collected | Everything is free, no in-app purchases | No | $0 | iPhone, Android |
| Euki | Privacy. Nonprofit, with a decoy code | Everything is free | No | $0 | iPhone, Android |
| Period Calendar Period Tracker | Price. Free on Android, paid for by ads | Yes, core features with ads | No, optional backup to your Google account | Not labeled, $0.99 to $59.99 listed | Android |
| My Cycle | Price. Free on iPhone with nothing to buy | Everything is free, no in-app purchases | No app account, syncs through iCloud | $0 | iPhone |
| Natural Cycles | Birth control. FDA cleared | Not stated | Required, with Go Anonymous | $149.99 | iPhone, Android |
| Clue Period & Cycle Tracker | A large, well-rated app with 200+ symptoms | Yes, some features in Clue Plus | Required for new users | $39.99 for Clue Plus | iPhone, Android |
| Apple Health Cycle Tracking | iPhone only. Built in and free | Everything is free | Apple ID only | $0 | iPhone, Apple Watch |
| Period Diary: Privacy First | iPhone privacy for a one-time price | Yes, free list not stated | No | $9.99 once | iPhone |
 Flo (for comparison) | The app you are leaving | Yes. Predictions, 80+ symptoms, Anonymous Mode | Sign-in, with Anonymous Mode | Not labeled, $1.99 to $59.99 listed | iPhone, Android |
Each app card below lists its privacy declaration. For Flo, that is Apple "Data Used to Track You", Play "No data shared".
If privacy is why you are leaving Flo
All three apps below work without an account and keep your log on your phone. drip and Euki declare that they collect no data at all and Hello Phase declares that it shares none, and our private period tracker apps list goes deeper.
Hello Phase
Best Flo alternative on Android- $39.99 for optional Plus
- Android
- No Play rating yet, 1K+ installs
- Privacy declaration
- Play "No data shared", some data collected
What stands out
- Hello Phase is our app, built for people who want a daily cycle routine on Android without handing over an account.
- You log your period, flow, one of eight moods, 16 symptoms and a note, and the free plan predicts your next three periods as a date range that narrows as it learns, next to an estimated estrogen and progesterone chart with a "you are here" marker.
- After 10 logged days or two full cycles it shows your top symptom pattern each cycle, and you can export every logged day as a CSV file, or a one-page PDF summary, for free.
Watch out for
- It is Android only, and with 1K+ installs it has no Google Play rating yet.
- The hormone chart is drawn from your cycle length and ovulation day, so it is an estimate and never a lab reading.
See the pricing page, the Hello Phase FAQ and our guide to the best hormone tracker apps, which compares estimated charts with urine tests.
Get it onGoogle Play
Price, account and privacy details
- Best for
- Best Flo alternative on Android, with no account, no ads, no third-party trackers, your log kept on your phone, and free predictions, symptom patterns, an estimated hormone chart and export
- Price (US, checked 26 Oct 2026)
- Free for tracking. Plus is $39.99 a year or $12.99 a month on Google Play.
- Platforms
- Android. There is no iPhone version yet.
- Account
- None, with no sign up and no login
- Privacy
- No ads and no third-party trackers. Google Play Data safety says no data is shared with third parties and lists some data types as collected, and the optional AI coach sends your question and a short slice of your recent log only after you agree.
- Ratings
- No Google Play rating yet, 1K+ installs, updated Oct 1, 2026
drip period & cycle tracker
Best open source swap on any phone- Free
- iPhone, Android
- 4.02 (59) App Store
- 4.2 (470) Google Play
- Privacy declaration
- Apple "Data Not Collected", Play "No data collected"
What stands out
- drip is free with no account and no ads, both stores show it declaring no data collected, and its open source code on GitLab lets anyone check how it handles your data.
Watch out for
- drip is built around the symptothermal method, which reads temperature and cervical mucus, so it suits people who are happy to log those signs.
- Ratings are few, and a Google Play reviewer reported a crash in June 2026.
On the App Store and Google Play, and at dripapp.org.
Price, account and privacy details
- Best for
- Best open source swap for Flo on any phone
- Price (US, checked 26 Oct 2026)
- Free, with no in-app purchases on either store
- Platforms
- iPhone and Android
- Account
- None
- Privacy
- Apple label "Data Not Collected". Google Play Data safety says no data is collected or shared.
- Ratings
- 4.02 (59 US ratings) on the App Store, 4.2 (470 reviews) on Google Play, updated Oct 24, 2026 on Google Play
Euki
Nonprofit, with a decoy code- Free
- iPhone, Android
- 4.17 (162) App Store
- 3.7 (359) Google Play
- Privacy declaration
- Apple "Data Not Collected", Play "No data collected"
What stands out
- Euki is open source, run by an independent 501(c)(3) nonprofit and adds a decoy code for moments when someone pressures you to open the app, and CyberInsider reported that Mozilla's 2026 study ranked it the most private period tracker.
Watch out for
- Neither store shows an update since 4 September 2025, and a Google Play reviewer in May 2026 said data was lost after a reinstall.
On the App Store and Google Play, and at eukiapp.org.
Price, account and privacy details
- Best for
- Maximum privacy from a nonprofit, with a decoy code
- Price (US, checked 26 Oct 2026)
- Free, with no in-app purchases
- Platforms
- iPhone and Android
- Account
- None. Data is kept on your phone, behind a PIN.
- Privacy
- Apple label "Data Not Collected". Google Play Data safety says no data is collected or shared.
- Ratings
- 4.17 (162 US ratings) on the App Store, 3.7 (359 reviews) on Google Play, last updated Sep 4, 2025
If the paywall or price is why you are leaving Flo
Both apps below cover everyday tracking for free with no account, and our list of free period tracker apps breaks down what each free plan includes.
Period Calendar Period Tracker
Free on Android, paid for by ads- Not labeled, $0.99 to $59.99 listed
- Android
- 4.9 (4.9M) Google Play
- Privacy declaration
- Play "No data shared", contains ads
What stands out
- This is the most reviewed period app we looked at, and the developer says you "can use all of its features anonymously".
Watch out for
- Digital Health Insights, reporting on a 2026 Mozilla Foundation study, said the app sent device details to ad networks including Google AdMob as soon as it opened, although the study did not find cycle logs shared with advertisers.
On Google Play.
Price, account and privacy details
- Best for
- Free, full tracking on Android if you can live with ads
- Price (US, checked 26 Oct 2026)
- Free with ads. Google Play lists in-app purchases from $0.99 to $59.99 without billing periods.
- Platforms
- Android. The developer, Simple Design, has no iPhone version in the US App Store.
- Account
- None, with optional encrypted backup to your own Google account
- Privacy
- Google Play Data safety says no data is shared and lists data collected, including health and fitness, personal info and device IDs
- Ratings
- 4.9 (4.9M reviews) on Google Play, 100M+ installs, updated Oct 16, 2026
My Cycle
Free on iPhone with nothing to buy- Free
- iPhone
- 4.80 (102,694) App Store
- Privacy declaration
- Apple "Data Not Linked to You"
What stands out
- My Cycle is a rare well-rated iPhone tracker with no paywall at all, and one reviewer summed it up as "free with no ads".
Watch out for
- Your data depends on iCloud, and a 2026 review titled "Not for irregular periods" is a reason to keep your old log until you trust its predictions.
On the App Store.
Price, account and privacy details
- Best for
- A free iPhone tracker with nothing to buy
- Price (US, checked 26 Oct 2026)
- Free, with no in-app purchases listed
- Platforms
- iPhone. We found no Google Play version.
- Account
- No app account. Your data syncs through iCloud.
- Privacy
- Apple label "Data Not Linked to You", with no tracking
- Ratings
- 4.80 (102,694 US ratings) on the App Store, updated Sep 2, 2026
If you want birth control or better accuracy
A period app is not birth control unless it is cleared for that use, and calendar predictions can be far off. A 2016 study found that only one website and three apps predicted the precise fertile window, and a 2020 study of app users found that only 12.4% actually had a 28-day cycle.
Natural Cycles
FDA-cleared birth control- $149.99
- iPhone, Android
- 4.79 (30,293) App Store
- 4.4 (23.5K) Google Play
- Privacy declaration
- Apple "Data Used to Track You", Play "No data shared"
What stands out
- In August 2018 the FDA allowed Natural Cycles to be marketed as the first contraceptive app sold directly to consumers, and 510(k) clearances in 2023 and 2025 added temperature from Apple Watch and Oura Ring.
- The company says it is 93% effective with typical use and 98% effective when used as directed.
Watch out for
- It is the most expensive app here, and a July 2026 Google Play reviewer said the app changed their period length and found the price high.
On the App Store and Google Play, and at naturalcycles.com.
Price, account and privacy details
- Best for
- Birth control from an FDA-cleared app
- Price (US, checked 26 Oct 2026)
- Annual $149.99 or Monthly $21.99 in the App Store. Google Play lists no in-app purchases, so the Android price is not shown in the store.
- Platforms
- iPhone and Android
- Account
- Required. A Go Anonymous option separates your identity from your fertility data.
- Privacy
- Apple label "Data Used to Track You" for contact info. Google Play Data safety says no data is shared.
- Ratings
- 4.79 (30,293 US ratings) on the App Store, 4.4 (23.5K reviews) on Google Play, updated Oct 15, 2026
Clue Period & Cycle Tracker
A large, well-rated app with 200+ symptoms- $39.99 for Clue Plus
- iPhone, Android
- 4.76 (406,450) App Store
- 4.5 (1.5M) Google Play
- Privacy declaration
- Apple "Data Used to Track You", Play lists some data shared
What stands out
- If you liked how much Flo covers, Clue is the closest large option, with modes for perimenopause, trying to conceive and pregnancy, and connections to Apple Watch, Oura, WHOOP, Withings and Fitbit.
- The FDA cleared a product called Clue Birth Control in February 2021, although we could not confirm how it is offered today.
Watch out for
- Clue will not solve a paywall complaint, since Google Play reviewers wrote "99% of features are paywalled" in September 2026 and "I get at least 2 promotions for Clue Plus every time I use the app" in 2025.
On the App Store and Google Play, and the Clue Plus page.
Price, account and privacy details
- Best for
- A large, well-rated swap on both phones that tracks 200+ symptoms
- Price (US, checked 26 Oct 2026)
- Free plan. Clue Plus is $39.99 a year or $9.99 a month in the App Store.
- Platforms
- iPhone and Android
- Account
- Required for new users since 2019, with data kept on servers in the EU
- Privacy
- Apple label "Data Used to Track You" for identifiers. Google Play Data safety lists some data shared, including device IDs for advertising or marketing.
- Ratings
- 4.76 (406,450 US ratings) on the App Store, 4.5 (1.5M reviews) on Google Play, updated Oct 21, 2026
If you only use an iPhone
Hello Phase is not on iPhone yet, so these are the two we would pick there, alongside drip, Euki, My Cycle and Clue above.
Apple Health Cycle Tracking
Built in and free on iPhone- Free
- iPhone, Apple Watch
- Built in, no store rating
- Privacy declaration
- Encrypted on a locked iPhone, end-to-end iCloud backup with two-factor authentication
What stands out
- Cycle Deviation Detection can flag irregular, infrequent or prolonged periods and persistent spotting from six months of history, and Apple Watch Series 8 or later and Ultra add ovulation estimates from wrist temperature.
Watch out for
- The fertile window is a six-day estimate from the traditional calendar method, and wrist temperature estimates are retrospective, so they tell you when you likely ovulated after the fact.
See Apple's Cycle Tracking guide.
Price, account and privacy details
- Best for
- Free, built-in tracking on iPhone and Apple Watch
- Price (US, checked 26 Oct 2026)
- Free, built into the Health app
- Platforms
- iPhone and Apple Watch
- Account
- Your Apple ID only
- Privacy
- Health data is encrypted when your iPhone is locked. With iOS 12 or later and two-factor authentication, Apple says it cannot read the Health data in your iCloud backup.
- Ratings
- Built in, so there are no store ratings
Period Diary: Privacy First
iPhone privacy for a one-time price- $9.99 once
- iPhone
- 4.10 (429) App Store
- Privacy declaration
- Apple "Data Not Linked to You"
What stands out
- If a recurring subscription is what pushed you away from Flo, a single $9.99 payment is the simplest fix on iPhone.
Watch out for
- We could not confirm which features are free or whether the free version shows ads, and it is a different app from the older Period Diary by Nanobit, which is now IVY.
On the App Store.
Price, account and privacy details
- Best for
- On-device tracking on iPhone for a one-time price
- Price (US, checked 26 Oct 2026)
- Free to download. "Period. Premium Lifetime" is $9.99 once.
- Platforms
- iPhone. We found no Google Play version.
- Account
- None. The developer promises "100% On-Device Storage".
- Privacy
- Apple label "Data Not Linked to You", with no tracking
- Ratings
- 4.10 (429 US ratings) on the App Store, updated Sep 23, 2026
Find the right app for you
How do I move my data out of Flo?
We could not confirm Flo's current export steps, so check the Flo help center or ask Flo support for a copy of your data. Write down your recent period start dates before you delete Flo, since we could not confirm that any app here imports a Flo file, and cancel Flo Premium in the store where you bought it.
Apps we left out and why
TechCrunch reported in July 2026 that Mozilla research found Stardust shared users' health data with an analytics firm, even though its Google Play Data safety section says no data is shared. In May 2023 the FTC announced a proposed order barring Premom from sharing health data for advertising, and in 2020 California's attorney general settled with Glow, maker of Eve by Glow, over security flaws.
Ovia requires an account and lists health and fitness data as shared on Google Play, Period Tracker Period Calendar by ABISHKKING says your data is "never uploaded or shared" while its Apple label lists identifiers and usage data as used to track you, and Kindara has not been updated on the App Store since September 2021.
How to choose
On Android, start with Hello Phase, or drip if open source code matters most to you. If you used Flo mainly for PMS or PMDD symptoms, the Hello Phase guide to the best PMDD tracker apps compares apps with daily severity ratings, and our best period tracker apps list covers every other need.
Questions people ask
What is the best alternative to Flo?
On Android, Hello Phase is the best Flo alternative, with no account, no ads, no third-party trackers and a free plan that includes period predictions, symptom patterns, an estimated hormone chart and export. drip is the best open source swap on any phone, Natural Cycles is the FDA-cleared option for birth control, and Apple Health's Cycle Tracking is the free built-in choice on iPhone.
Is there a free app like Flo without a paywall?
Yes, drip, Euki and My Cycle list no in-app purchases at all, and Apple Health's Cycle Tracking is free on iPhone. Period Calendar Period Tracker is free on Android with ads, and Hello Phase is free for logging, predictions, the hormone chart and export, with an optional Plus plan.
Is Flo safe to use now?
Flo has added protections since 2021, and whether they are enough is your call. The FTC finalized an order in June 2021 over allegations that Flo shared health data with Facebook and Google, and Flo added Anonymous Mode in 2022.
Can I export my data from Flo?
We could not confirm Flo's current export steps, so check the Flo help center or ask Flo support for a copy of your data, and write down your recent period start dates before you switch.
Which Flo alternative works as birth control?
Natural Cycles is the FDA-cleared birth control app on this list, at $149.99 a year in the US App Store. The other trackers here, including Hello Phase, give estimates that can be wrong and should not be used to prevent pregnancy.
Is there a Flo alternative with no account?
Yes, Hello Phase, drip, Euki, Period Calendar Period Tracker, My Cycle and Period Diary: Privacy First all work without an account. Apple Health's Cycle Tracking uses only your Apple ID.
Try Hello Phase
Hello Phase is free on Android with no account, no ads and no third-party trackers, and your log stays on your phone.
Get it onGoogle PlayReferences
Store listings for every app are linked from its card above and were checked on 26 October 2026.
- FTC, order finalized with Flo Health, June 2021
- CNBC, jury rules Meta violated law in period tracking app data case, August 2025
- TechCrunch, jury rules Meta violated California privacy laws in the Flo case, August 2025
- Flo, Anonymous Mode announcement
- Flo help center, free and paid features
- FDA, De Novo DEN170052 decision summary, Natural Cycles
- STAT News, FDA clears Natural Cycles app, August 2018
- FDA, 510(k) K231274, Natural Cycles with wearable temperature
- FDA, 510(k) K250561, Natural Cycles with compatible wearables
- Natural Cycles FAQs, effectiveness
- Natural Cycles help, What is Go Anonymous
- FDA, 510(k) K193330, Clue Birth Control, February 2021
- Clue, why you need an account
- Apple Support, Cycle Tracking
- Apple, Health app and privacy
- Apple Platform Security, protecting access to Health data
- drip source code on GitLab
- Euki website
- CyberInsider, Mozilla study ranks Euki the most private period tracker
- Digital Health Insights, Mozilla report on privacy gaps in period apps
- TechCrunch, Stardust shares health data with analytics firm, July 2026
- FTC, proposed order against Premom, May 2023
- California Attorney General, settlement with Glow, September 2020
- Setton R et al. 2016, accuracy of fertile window predictions in websites and apps, Obstet Gynecol
- Soumpasis I et al. 2020, real-life cycle length and ovulation day, Hum Reprod Open
- Hormone Tracker - Hello Phase on Google Play
- Hello Phase privacy policy
History of updates
- , first published
Hello Phase is for tracking and learning about your cycle. It is not a contraceptive and it does not diagnose medical conditions. Nothing on this page is medical advice.