Summary: Your sleep plans are computed on your device, and Body Clock has no account or login. The app does not sell your personal data. The free version shows ads supplied by Google AdMob, and the AdMob SDK collects limited device and usage data to serve those ads (and, only with your permission, to personalise them). You can avoid personalised ads by declining tracking, and you can remove ads entirely by subscribing to Body Clock Pro. Any Apple Health data you choose to share is read-only, used only on your device, and never transmitted off it.
Body Clock is published by MW Supply Limited ("we", "us"). Body Clock has no account system, no login, and no user profile. We do not ourselves operate servers that receive your personal data; the data collection described below is performed by Google's advertising SDK on our behalf when you use the free, ad-supported version.
The free version of Body Clock displays ads through Google AdMob. To request and show ads, and to measure and prevent fraud, the Google Mobile Ads SDK may collect and process:
How this data is used depends on your tracking choice (see Section 3). Google acts as an independent party for ad delivery; its handling of data is governed by Google's policies. You can learn more at how Google uses information from sites or apps that use its services and the Google Privacy Policy.
On first use of the ad-supported version, iOS will ask whether Body Clock may track you across apps and websites (Apple's App Tracking Transparency prompt).
You can change this any time in iOS Settings → Privacy & Security → Tracking. Where required (for example in the EEA and UK), you will also be shown a consent message from Google's User Messaging Platform before ads are served, and you can review or change your choice from within the app.
Subscribing to Body Clock Pro removes all ads. When you are a Pro subscriber, the ad SDK does not request ads and the ad-related data collection in Section 2 does not occur. Subscriptions are processed by Apple; we do not receive your payment-card details.
Connecting Apple Health is entirely optional, and the app works fully without it. If you grant permission, Body Clock requests read-only access to a small set of Health data to personalise your sleep plan:
This data is read from Apple Health and used solely on your device to compute your schedule. Body Clock never writes to Apple Health, and your Health data is never sent off your device, never uploaded to our servers, never shared with third parties (including advertisers), and never used for advertising or marketing. You can review or revoke this access at any time in iOS Settings → Privacy & Security → Health → Body Clock.
All planning — direction, timing, light and sleep windows, melatonin and caffeine timing — is computed locally on your device. Your trips, sleep goals, and your health data are not sent off the device for processing.
If you are signed in to iCloud, the trips and sleep goals you create (your routes, dates, and sleep preferences) are backed up to Body Clock's private container in your iCloud, under your Apple ID. This lets you continue them on your other devices. MW Supply Limited has no access to, and never receives a copy of, the contents of your iCloud storage. iCloud follows Apple's own privacy practices. If you are not signed in to iCloud, everything stays in local on-device storage. Apple Health data is never included in this backup.
Body Clock can schedule local notifications to remind you about upcoming actions in your plan. These reminders are created and delivered entirely on your device by iOS. No notification content is sent to or through any server operated by MW Supply Limited.
The free version uses Google AdMob (the Google Mobile Ads SDK) and Google's User Messaging Platform for consent, as described above. Apart from Google's advertising services and Apple's own first-party services (App Store / StoreKit for subscriptions, iCloud, HealthKit, and crash reporting you opt into via Share With App Developers), Body Clock contains no other analytics frameworks, advertising networks, or third-party SDKs.
Body Clock is intended for a general audience and is not directed at children. We do not knowingly enable the collection of personal data from children. Because the free version serves ads, families who prefer an ad-free experience can subscribe to Pro to remove ads.
You can: decline or revoke app tracking (Section 3); subscribe to Pro to remove ads and ad data collection (Section 4); reset your advertising identifier in iOS Settings; and revoke Health access at any time. Depending on where you live, you may have rights to access, correct, or delete personal data held about you; for the limited data Google processes for ads, please refer to Google's privacy controls, and you may also contact us at the address below.
Body Clock provides general educational guidance based on published circadian-rhythm research. It is not medical advice and is not a medical device. Consult a qualified clinician before using melatonin or if you have a sleep, cardiac, or other health condition.
If we change how Body Clock handles data, we will update this page and the "Last updated" date above. Material changes will also be reflected in the App Store privacy nutrition labels for the affected version of the app.
Questions about this privacy policy can be sent to mwsupplylimited@gmail.com.