Plumb: Posture Coach

Privacy Policy

Last updated 29 September 2026

Plumb reads the head-motion sensors in compatible AirPods and gives you a gentle cue when your head has drifted forward. It has no accounts and no sign-in. This policy explains what the app does with data, what the developer receives (nothing), and the one optional feature, a rewarded ad on the free plan, where a third party is involved.

What the developer collects

Nothing. The developer runs no servers for Plumb and receives no data from the app: no head-motion readings, no posture scores, no analytics, no crash reports and no personal information. Plumb does not use your location, contacts, photos, camera or microphone.

If you have turned on Share With App Developers in iOS Settings, Apple may pass the developer anonymous crash and usage statistics. Those are aggregated by Apple and cannot identify you.

Head motion and posture data stay on your device

Plumb uses Apple's Core Motion framework to read the orientation of your AirPods. Those readings are processed on your iPhone, in real time, to work out how far your head leans from the position you calibrated. They are never uploaded or shared.

After a session Plumb keeps a summary on your iPhone so it can show your history: the time you spent in good and poor posture, how many cues you got, your furthest lean, a coarse timeline of the session and your streak. Your settings, your calibration, your language choice and whether Plumb Pro is unlocked are stored on your iPhone too. Your iPhone's own backup may include this data, according to your iCloud or Finder backup settings. Deleting the app deletes it.

Plumb also uses your iPhone's motion-activity recognition (Motion & Fitness) to notice when you are walking, running or cycling, so it can pause desk-style tracking. That result is used on the device and is not stored or shared. You can turn the permission off in iOS Settings; Plumb keeps working.

Notifications, widgets and Live Activity

Notifications (cues and break reminders) are local notifications created on your iPhone. Plumb has no push-notification server.
Widgets, the Lock Screen Live Activity and Siri Shortcuts read a small summary of your day and of the running session that Plumb keeps in a storage area shared only between Plumb and its own widgets on your iPhone.

Purchases

Plumb Pro is bought through Apple's App Store. Apple handles the payment; the developer never sees your payment details or your Apple Account. The app only asks the App Store, on your device, whether Pro is unlocked. Apple's privacy policy covers the purchase: apple.com/legal/privacy.

Advertising on the free plan

The free plan includes 30 tracked minutes a day. If you use them up, you may choose to watch one rewarded video ad to earn 15 more minutes. There are no banners or pop-up ads, nothing is shown when you open the app, and the ad only plays when you tap Watch ad. Plumb Pro shows no ads at all.

Ads are provided by Google AdMob. When you ask for an ad, Google's Mobile Ads SDK runs inside Plumb and may collect and use, for delivering the ad, measuring it, preventing fraud and keeping the service working:

device identifiers and information about your device and app (Plumb does not ask for tracking permission, so the advertising identifier is not used);
your IP address, from which an approximate location can be derived;
how you interact with the ad; and
performance and diagnostic data about the SDK.

This data is handled by Google under Google's own policies, is not linked to any identity the developer holds, and Plumb does not use it to track you across other companies' apps and websites. The developer receives only Google's aggregated earnings reports.

Where the law requires consent (for example in the European Economic Area, the United Kingdom and some US states), Plumb shows Google's consent form before the first ad is requested. You can change your choice at any time under Settings › Privacy choices in the app, where it is offered. See how Google uses data in ads and Google's Privacy Policy.

Children

Plumb is a general-audience wellness app and is not directed at children under 13. The developer does not knowingly collect information from anyone, children included.

Your choices

Revoke Motion & Fitness or Notifications access at any time in iOS Settings › Plumb.
Delete all data Plumb keeps by deleting the app.
Choose whether to watch an ad at all: it is always optional, and Plumb Pro removes ads.
Because the developer holds no personal data about you, there is nothing on a developer server to access, correct or delete. For data handled by Google in connection with an ad, use Google's own privacy controls.

Not medical advice

Plumb offers general wellness feedback. It is not a medical device and does not diagnose, treat or prevent any condition.

Changes

If this policy changes, the revised version will appear on this page with a new date above.

Contact

Questions about privacy in this app: xushnudbek321@gmail.com