Privacy Policy

Last updated: 21 July 2026

The short version: Seize the Week has no account and no servers of our own. Your health data — from Apple Health on iPhone and iPad, or Health Connect on Android — is read-only, used only on your device to compute your life-expectancy estimate, and never sent to us, anyone else, or any advertiser. It is never used for advertising. The app is free and ad-supported: it shows ads from Google AdMob, which may use your device's advertising identifier for advertising. A one-time Remove Ads purchase turns all ads off. On iPhone and iPad two further things can leave the device: anonymized usage statistics, but only if you allow tracking, and — only if you opt in — your Game Center alias and leaderboard scores. The Android app has neither: no analytics at all, and no leaderboards.

Who we are

Seize the Week ("the app") is published under the Carpe Diem umbrella, for iPhone and iPad on the Apple App Store and for Android on Google Play. This policy covers both versions and explains what the app does and does not do with your information. You can reach us any time at [email protected].

How to read this policy

Both versions are built the same way: the estimate is computed on your own device, and we run no servers. A few things differ because the platforms differ — where health data comes from, how ad consent is asked, whether anything syncs, analytics, and leaderboards. Wherever behaviour belongs to one platform only, the paragraph is labelled On iPhone and iPad or On Android. Anything not labelled applies to both.

Data we collect

We, the developer, operate no servers of our own and run no crash-reporting. The app does not send your personal information — including your health data — to us.

The app is free and ad-supported. To serve ads, our advertising partner Google (through the Google Mobile Ads SDK / AdMob) collects certain data on its own behalf — see Advertising below. Beyond that, the two versions differ:

On iPhone and iPad — the app includes Google Firebase Analytics, which collects anonymized usage statistics, but only if you allow tracking in Apple's App Tracking Transparency prompt; see Analytics below. Information may also leave your device through Apple's Game Center, but only if you opt in to the Compete (friends and leaderboards) feature; see Game Center & friends below.
On Android — the app ships no analytics SDK at all and has no leaderboards. Apart from the advertising data described below, and your purchase if you buy Remove Ads through Google Play, nothing leaves your device.

Because of this, the app's Apple App Store privacy label is not “Data Not Collected”: it discloses the two Game Center data types described below (your player alias and your leaderboard scores) together with the advertising-related data types listed in the Advertising section and the analytics data types listed in the Analytics section. The Google Play Data safety form for the Android app declares the advertising-related data types only — device or other IDs, approximate (IP-derived) location, app interactions, and diagnostics — and declares no health and fitness data, because none of it ever leaves your device.

Your health data

With your explicit permission, the app reads a small set of health metrics read-only — it never writes anything back and never deletes anything — and uses them for one purpose: computing and displaying a personal life-expectancy estimate, entirely on your device. Each metric maps to one published adjustment in that estimate. A metric the app cannot read simply contributes nothing; missing data never counts against you.

On iPhone and iPad, the source is Apple Health, and the app reads:

Date of birth and biological sex — to set your actuarial baseline.
VO₂ max, resting heart rate, and heart rate variability — cardiovascular fitness.
Steps and exercise minutes — physical activity.
Sleep analysis — sleep duration.
Body mass and height — BMI.
Blood pressure (systolic / diastolic).

You can revoke the app's Health access at any time in Settings → Privacy & Security → Health.

On Android, the source is Health Connect. The app requests eight read permissions and no write permissions at all, and reads 90-day averages of these records:

Steps — physical activity.
Sleep sessions — sleep duration.
Resting heart rate — cardiovascular fitness.
VO₂ max — cardiorespiratory fitness.
Weight and height — together, your BMI.
Blood pressure — the systolic reading.
Exercise sessions — weekly exercise minutes.

Health Connect holds no date of birth and no biological sex, so on Android those come from what you enter in the app's own Settings, not from your health records. You can withdraw the app's access at any time in your device's Health Connect settings, where you can also delete the underlying records themselves; the app keeps working, and the estimate simply falls back to your profile and the habits you set by hand. The app also contains a “Health data & privacy” screen, reachable from Health Connect, that explains the same thing.

On both platforms the values are used in memory to compute one number, and then discarded. The only thing kept is the derived estimate — your estimated total years and how far your habits moved it — stored locally so the app can chart your history. Your health data is never transmitted to us, sold, or shared. There is no server of ours to send it to.

Health data is never used for advertising

Your Apple Health and Health Connect data is never used for advertising. It is never passed to Google AdMob or any other advertising partner, never used to select, target, or time the ads you see, never used to build advertising audiences or profiles, and never shared with any ad network, data broker, or reseller. On Android the app's ad requests carry no app-supplied information of any kind, and the advertising code is kept structurally separate from the health code — an automated test fails the build if that separation is ever broken. The same holds on iPhone and iPad: no health value reaches the advertising or analytics code there either.

Advertising

Seize the Week is free and supported by ads from Google AdMob (the Google Mobile Ads SDK) on both platforms. The only ad format is an App Open ad — a full-screen ad that may appear when you return to the app after leaving it. Ads are never shown on first launch and never during onboarding, and the rest of the app stays fully functional with or without them.

On iPhone and iPad, Apple's App Tracking Transparency (ATT) prompt asks whether the app may access your device's advertising identifier (IDFA) for advertising. If you allow it, ads may be personalized. If you decline — or leave tracking off — the app still works exactly the same and simply shows non-personalized ads instead. If you are in the European Economic Area, the United Kingdom, or Switzerland, you will also see a Google UMP consent message (for GDPR) where you can set your ad-personalization choices. You can change your tracking choice at any time in Settings → Privacy & Security → Tracking.

On Android there is no ATT prompt and no IDFA; the identifier is the Android advertising ID. If you are in the European Economic Area, the United Kingdom, or Switzerland, the app shows a Google UMP consent message (for GDPR) before it serves any ad, and you can reopen it and change your answer at any time from Settings → Ad consent options inside the app — a row that appears only where such choices exist. You can reset or delete the advertising ID itself at any time in Android Settings → Privacy → Ads.

For advertising, Google may collect and process the following data. Because the app has no account and no login, this data is not linked to your identity:

Device ID — your advertising identifier: on iPhone and iPad the IDFA, only if you allow tracking via the ATT prompt; on Android the Android advertising ID.
Coarse location — an approximate location derived from your IP address. Neither version of the app asks for location permission.
Product / app interaction — basic ad interactions, such as ad views and taps.
Advertising data — for example, which ads were shown to you.
Diagnostics — basic stability information from the ads SDK (declared on Google Play's Data safety form).

Under Apple's App Store privacy framework, these advertising data types may be used to track you across other companies' apps and websites when you allow tracking; Google Play's Data safety form describes the same data as collected and shared for advertising. This data is handled by Google under Google's Privacy Policy; we, the developer, do not receive it.

If you prefer no ads at all, the app offers a one-time Remove Ads in-app purchase ($4.99, or the equivalent in your currency) that disables all advertising permanently. It is transacted by Apple on the App Store and by Google Play Billing on Android; the store handles the payment end to end, and we never see your payment details. You can restore the purchase on another device from the app's Settings.

Where your data is stored

Your profile, your settings, and your history of estimates live on your device.

On iPhone and iPad, if you are signed in to iCloud, the app syncs your settings and your history of estimates through your own private iCloud (CloudKit private database). This data is governed by Apple's privacy policy and is accessible only to you on your own devices. We, the developer, cannot access it. If you are signed out of iCloud, the app stores everything locally on your device only.

On Android, there is no cloud sync at all: everything stays in the app's own private storage on that device. Android's Auto Backup is deliberately turned off, so none of it is copied to Google Drive either.

Analytics

On iPhone and iPad: the app uses Google Firebase Analytics to collect anonymized usage statistics — for example, which screens are viewed and basic device information — so we can understand how the app is used and improve it. Analytics collection is off by default: it is enabled only if you allow tracking in Apple's App Tracking Transparency prompt. If you decline, no analytics data is collected. This data is not linked to your identity (the app has no account or login), never includes your Apple Health data, and is handled by Google under Google's Privacy Policy. You can change your choice at any time in Settings → Privacy & Security → Tracking.

On Android: the app ships no analytics SDK whatsoever — no Firebase Analytics, no crash reporting, no usage measurement of any kind. Nothing about how you use the Android app is collected, by us or by anyone else.

On this website: carpeseptimanam.com uses Google Analytics to measure how the site is visited, using cookies and similar technologies. This applies to the website only, not the app. Google processes this data under Google's Privacy Policy; you can opt out with the Google Analytics opt-out browser add-on.

Game Center & friends (iPhone and iPad only)

Seize the Week includes an optional Compete feature (friends and leaderboards) built on Apple's Game Center. It is off until you choose to use it. When you do, two pieces of information are shared with your Game Center friends through Apple's Game Center:

Your Game Center nickname (player alias) — an identifier Apple associates with your Game Center account.
Your three leaderboard scores — each derived from the life-expectancy estimate computed on your device.

All of this is handled by Apple under Apple's Privacy Policy. The app keeps no separate account, and stores none of this on servers of our own — we, the developer, run no servers. You can turn Game Center off at any time in Settings → Game Center, which stops this sharing.

The Android app has no leaderboards and no equivalent feature: nothing of this kind leaves an Android device.

Your choices, and deleting your data

There is no account to close and no copy of your data to ask us for, because we hold nothing: the app creates no account, and we, the developer, store none of your information anywhere. What that means in practice:

Deleting everything — uninstalling the app removes all of its local data from your device: your profile, your settings, and your estimate history. On iPhone and iPad, if you use iCloud sync, you can also delete the app's data from your iCloud storage in Settings → Apple Account → iCloud. On Android there is nothing else to delete, because nothing is stored anywhere but the device.
Withdrawing health access — on iPhone and iPad in Settings → Privacy & Security → Health; on Android in Health Connect, which is also where you can delete the underlying health records themselves.
Your advertising identifier — on Android you can reset or delete it in Settings → Privacy → Ads; on iPhone and iPad you can turn tracking off in Settings → Privacy & Security → Tracking. In the European Economic Area, the United Kingdom, and Switzerland you can also change your ad consent answer at any time — on Android from Settings → Ad consent options in the app.
Turning ads off entirely — the one-time Remove Ads purchase stops all advertising.

Retention and security. Your health data is held only in memory, for as long as it takes to compute the estimate, and is then discarded; only the derived estimate is written to your device, and it stays there until you delete it or uninstall the app. The little the app does send — ad requests and store purchases — travels over encrypted (TLS) connections to Google or Apple. There is no connection to a server of ours, because we run none.

What we don't do

No accounts or sign-ups.
We, the developer, run no servers and no crash-reporting. On Android there is no analytics at all; on iPhone and iPad app analytics is off unless you allow tracking.
We never collect, sell, or share your Apple Health or Health Connect data.
Your health data is never shared with advertisers, never used to target ads, and never used to build advertising audiences.
Ads are never shown on first launch or during onboarding, and never use your health data.
Neither version of the app asks for location permission.

Children

The app contains no objectionable content, but it is designed for a general audience and is not directed at children under 13.

Not medical advice

Seize the Week is a motivational visualization, not a medical prediction, diagnosis, or health advice. The estimate is an illustration of how habits may move the odds, based on published population research — not a forecast of your individual lifespan.

Changes

If this policy changes, we will update the date above and post the revised version at this address.

Contact

Questions? Email [email protected].