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Is Femometer Fertility Tracker Safe?

Femometer Fertility Tracker privacy label · by BONGMI LIMITED · checked November 2026

  • Tracks you
  • Collects health data
  • Recently updated
App Privacy label Developer-reported · checked November 1, 2026
Used to track you
1type
Linked to you
7types
Not linked to you
0types

None declared

Short answer

It depends on how you feel about tracking: Femometer Fertility Tracker declares data used to track you. The sensitive items are health and fitness, sensitive info and user content. In total the label lists 7 data types; 59% of health trackers we checked declare tracking.

At a glance

Femometer Fertility Tracker privacy in one look

Data exposure on the label
Used to track you
  1. 1
  2. 2
  3. 3
  4. 4

Built only from the developer's App Store label. It describes disclosure, not tested behaviour.

Verdict from the label
Tracks you

Femometer Fertility Tracker's developer reports using identifiers to track you across other companies' apps and websites.

Try it

Did Femometer Fertility Tracker ask for something?

Pick the permission prompt you saw. We compare it with what Femometer Fertility Tracker's developer declared.

It asked me for access to…
Tap a prompt to compare it with the label.
Not on the label

Location is not on Femometer Fertility Tracker's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Matches the label

Femometer Fertility Tracker lists User Content on its label, linked to you. Choose Limited Access and pick only the photos you want to share.

Not on the label

Contacts is not on Femometer Fertility Tracker's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Expected — and you can decline

Femometer Fertility Tracker declares data used to track you, so expect the “Allow to track?” prompt. Tap Ask App Not to Track; the app must keep working without it.

Matches the label

Femometer Fertility Tracker lists Health & Fitness on its label, linked to you. Approve Health categories one at a time in the Health app.

A permission is what the app can reach on your iPhone; the label is what the developer says leaves it. They answer different questions.

Line by line

What Femometer Fertility Tracker collects, explained

Data typeWhat it coversWhere to limit it
Health & FitnessSensitiveLinked to you Health and medical records, HealthKit data, and fitness or exercise data. Health app › your profile › Apps: switch off each category the app should not read or write; check Settings › Privacy & Security › Motion & Fitness.
Sensitive InfoSensitiveLinked to you Racial or ethnic data, sexual orientation, pregnancy, disability, beliefs, union membership, genetic or biometric data. Share only what the app needs and check whether the label lists this data as linked to you.
User ContentSensitiveLinked to you Messages, photos, videos, audio recordings, documents and support chats you create or upload. Settings › Privacy & Security › Photos: choose Limited Access or None; review Microphone and Files access too.
Contact InfoLinked to you Your name, email address, phone number or postal address. Use Sign in with Apple with Hide My Email where offered, and check the app's account and marketing preferences.
IdentifiersUsed to track youLinked to you An account ID, screen name, customer number or a device-level ID such as the advertising identifier. Settings › Privacy & Security › Tracking: turn off Allow Apps to Request to Track, or tap Ask App Not to Track when prompted.
Usage DataLinked to you What you tap, open and view inside the app, plus which ads you have seen. There is no single iOS switch. Look for an analytics or personalised-ads toggle in the app's own settings.
DiagnosticsLinked to you Crash logs, launch times, hang rates and energy use. Settings › Privacy & Security › Analytics & Improvements › Share With App Developers controls what Apple passes on; the app's own crash reporting is separate.
Reading the label

What Femometer Fertility Tracker's label means for you

Femometer Fertility Tracker's label has 1 type under “Data Used to Track You”, 7 types under “Data Linked to You”. A data type can appear in more than one section when it is used for different purposes — for example, identifiers used for both analytics and advertising.

Tracking is the declaration that most separates apps. It means identifiers from Femometer Fertility Tracker can be combined with data from other companies to target or measure ads, or shared with data brokers. On iOS 14.5 and later, the app must ask your permission before tracking you through the advertising identifier; answering “Ask App Not to Track” blocks that identifier and tells the developer you have declined.

The items that deserve the most attention are health and fitness, sensitive info and user content. Health data is among the most sensitive data an app can hold, and US health-privacy law (HIPAA) does not cover most consumer apps.

Health trackers collect symptoms, vitals and habits. In the US, most consumer health apps are not covered by HIPAA, so the privacy policy is your main protection. Grant HealthKit categories one by one in the Health app, and avoid connecting categories the app does not need.

Among the 180 health trackers in our snapshot with a label, 59% declare tracking, 84% collect data linked to you and 3% say they collect nothing. Femometer Fertility Tracker lists 7 data types, more than the average of 5.1 for this group.

Health and fitness apps can read Apple Health data only for categories you approve, one by one. What they collect themselves is shown on the label.

On your iPhone

Settings to check for Femometer Fertility Tracker

  1. 1

    Tracking

    Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.

  2. 2

    Photos

    Settings › Privacy & Security › Photos. Limited Access lets you pick exactly which pictures the app can see; Add Photos Only lets it save without reading your library.

  3. 3

    Health

    Health app › your profile picture › Apps › Femometer Fertility Tracker. Turn categories on one at a time; the app cannot tell which ones you declined.

  4. 4

    Sign-in

    When creating an account, Sign in with Apple can give the app a relay address from Hide My Email instead of your real one.

  5. 5

    Lock the app

    On iOS 18 and later, touch and hold the icon and choose Require Face ID. Anyone who picks up your unlocked phone then needs your face, fingerprint or passcode to open it.

  6. 6

    Notifications

    Settings › Notifications › Femometer Fertility Tracker › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

Cross-app tracking

Does Femometer Fertility Tracker track you?

Yes — 1 data type

Identifiers. Apple defines tracking as linking data from this app with data from other companies' apps, websites or offline sources for targeted advertising or ad measurement, or sharing it with a data broker.

Does Femometer Fertility Tracker track you? Full answer and how to stop it →

iOS 18 and later

Lock Femometer Fertility Tracker behind Face ID

  1. Find Femometer Fertility Tracker on your Home Screen or in App Library.
  2. Touch and hold the icon until the quick-actions menu opens.
  3. Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
  4. Tap Require Face ID again to confirm. Femometer Fertility Tracker now asks for authentication every time it opens.

The lock is an iPhone feature, so it works whether or not Femometer Fertility Tracker has a passcode of its own. It does not change what the app sends to its developer.

Lock or hide Femometer Fertility Tracker: step-by-step guide →

From the App Store record

About Femometer Fertility Tracker

DeveloperBONGMI LIMITED
App Store categoryHealth & Fitness (also Lifestyle)
Latest version5.62.6, released October 2026
First releasedAugust 2017
RequiresiOS 15.0 or later
Size253 MB
Age rating12+
Languages12 (EN, FR, DE, ID, IT, JA, PL, PT…)
Bundle IDcom.btang.thermometer

The current version shipped in October 2026, so the app is actively maintained and its label is likely current. Labels are updated by developers when practices change.

Read with care

What the label cannot tell you

  • A label is self-reported. Apple publishes the developer's answers and can reject apps that misrepresent them, but it does not independently verify what Femometer Fertility Tracker sends.
  • It does not say where data is stored, how long it is kept, whether it is encrypted, or which companies receive it. The privacy policy covers those points.
  • Optional data counts: if a feature lets you add something (a profile photo, a phone number), the type is listed even if you never use the feature.
  • Data handled only on your iPhone is not 'collected', so a no-collection label is compatible with an app that reads your files locally.
  • Third-party sign-in, payment processors and SDKs are supposed to be included, but a label can lag behind a new version.

The question to ask Femometer Fertility Tracker's developer: Is my health data shared with partners or used for ads?

How it compares

Femometer Fertility Tracker vs similar health trackers

Data types listed on each App Store privacy label
Tracks youLinked to youNot linkedCollects nothing

Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.

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Do it now

Your Femometer Fertility Tracker privacy checklist

Tick what you have done
Tick each step as you do it on your iPhone.

Done. You have applied every control the label points to.

Quick quiz

True or false?

  1. Q1Femometer Fertility Tracker's privacy label says it uses data to track you.
    Right.
    Not quite.

    True: it lists identifiers under Data Used to Track You.

  2. Q2Apple tests every app to confirm its privacy label is accurate.
    Right.
    Not quite.

    Labels are self-reported by developers. Apple can reject or remove apps that misrepresent practices, but it does not audit each label.

  3. Q3Femometer Fertility Tracker collects Health & Fitness.
    Right.
    Not quite.

    True: Health & Fitness appears on its label.

  4. Q4Data “Not Linked to You” is never sent off your iPhone.
    Right.
    Not quite.

    It is collected and sent; the developer says it is de-identified rather than tied to your account or device.

  5. Q5Tapping “Ask App Not to Track” can stop an app from working.
    Right.
    Not quite.

    Apple's rules require apps to work the same whether or not you allow tracking.

Questions people ask

Femometer Fertility Tracker privacy FAQ

Is Femometer Fertility Tracker safe to use?
Based on its App Store privacy label, femometer Fertility Tracker's developer reports using identifiers to track you across other companies' apps and websites. Whether that is acceptable depends on what you will store in it. The label is developer-reported, not an independent security test.
Does Femometer Fertility Tracker track you?
Yes. Its label lists identifiers under Data Used to Track You. You can decline at the iOS tracking prompt.
What data does Femometer Fertility Tracker collect?
Health and fitness, sensitive info, user content, contact info, identifiers, usage data and diagnostics. Of these, health and fitness, sensitive info, user content, contact info, identifiers, usage data and diagnostics are linked to your identity.
Who makes Femometer Fertility Tracker?
BONGMI LIMITED, according to the App Store. It was first released in August 2017 and the current version is 5.62.6.
Can I lock Femometer Fertility Tracker with Face ID?
On iOS 18 or later, touch and hold Femometer Fertility Tracker's icon and choose Require Face ID (or Touch ID / Passcode). This is an iPhone feature and works for most downloaded apps, whether or not the app has its own lock.
How does Femometer Fertility Tracker compare with other health trackers?
Across 180 health trackers with labels in our snapshot, 59% declare tracking and 3% say they collect no data. Femometer Fertility Tracker lists 7 data types against an average of 5.1.
Is my health data shared with partners or used for ads?
The privacy label cannot answer that. Look for it in Femometer Fertility Tracker's privacy policy or support pages, linked from the App Store listing. Grant HealthKit categories one by one in the Health app, and avoid connecting categories the app does not need.
How do I delete my data from Femometer Fertility Tracker?
Apps that let you create an account must also let you start account deletion from inside the app (an App Store rule since June 2022). Deleting the app from your iPhone alone does not delete data already sent to the developer.
Facts on this page come from Femometer Fertility Tracker on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction