Privacy Policy for OnMyWeigh

Effective date: August 18, 2026 Last updated: August 18, 2026

OnMyWeigh is published by John Kusion, an individual developer based in Illinois, United States. Contact: privacy@rjkdigitalventures.com.

The short version

OnMyWeigh does not collect your data. Your weigh-ins, measurements, goals and everything else you enter are stored only on your device. There is no account, no sign-in, and no server that receives your information. We cannot see your data, because it never reaches us.

The single exception is purchasing OnMyWeigh Pro, which Apple and our payments provider process on our behalf. That is explained in full below.

1. What this policy covers

This policy covers the OnMyWeigh iOS app. It does not cover Apple's own handling of your App Store account, which is governed by Apple's Privacy Policy.

2. Information you enter

You can record the following in OnMyWeigh:

Weight entries, with optional date, time and notes
A goal weight and an optional starting weight
Height, age and sex, used to calculate BMI
Body measurements, including optional body-fat percentage
Milestones and custom target dates
App preferences such as units, default chart range and reminder settings

All of it is stored locally on your device, in the app's own storage. It is not transmitted to us or to anyone else. There is no user account, so this information is never associated with an identity.

If you use more than one device, this data does not sync between them.

3. Information we do not collect

OnMyWeigh contains no analytics, no advertising, no tracking software and no third-party trackers. Specifically, we do not collect:

Your name, email address, phone number or postal address
Your location
Your contacts, photos or camera. The app never requests photo or camera access
Device identifiers for advertising or tracking purposes
Usage analytics, crash telemetry or behavioural data

Because we do not track you across apps or websites, the app does not ask for App Tracking Transparency permission.

4. Purchases — the one exception

If you buy OnMyWeigh Pro, the transaction is processed by Apple, and purchase status is managed for us by RevenueCat, Inc., our payments infrastructure provider.

For that to work:

Apple processes your payment under its own privacy policy. We never see your payment details, card number or billing address.
RevenueCat receives a randomly generated, anonymous identifier for your installation, along with the purchase receipt and subscription status. This lets the app know whether Pro is active and lets you restore purchases on a new device.

Neither Apple nor RevenueCat receives your weight, measurements or any other health information from this app. The anonymous identifier is not linked to your name, email or any other identity we hold, because we hold none.

RevenueCat's handling of that data is described in the RevenueCat Privacy Policy.

5. Notifications

Weigh-in reminders are local notifications scheduled by your device. They are not sent from a server, and no notification service receives your data. The app asks for notification permission only at the moment you switch reminders on, and you can revoke it at any time in iOS Settings.

6. Exporting and sharing your data

OnMyWeigh can export your data as a CSV file, a full JSON backup, or a PDF progress report. Exporting creates a file on your device and hands it to the standard iOS share sheet.

Where that file goes is entirely your choice. If you email it, save it to iCloud Drive, or send it through another app, that destination's own privacy terms apply. We are not involved in and do not receive anything from that transfer.

7. Keeping and deleting your data

Your data stays on your device until you remove it. You can:

Delete individual weigh-ins from the History tab
Use Settings → Delete all data, which permanently removes every OnMyWeigh record from the device
Delete the app, which removes its data with it

There is no backup on our side. If you delete the app or your device is lost or reset, the data is gone. Export a backup first if you want to keep your history.

Deleting the app does not cancel a subscription. Subscriptions are managed in your Apple account settings.

8. Children

OnMyWeigh is not directed at children under 13, and we do not knowingly collect information from children. Since the app collects no personal information from anyone, it holds none about children either.

9. Your rights

Privacy laws including the GDPR (EU/UK) and the CCPA/CPRA (California) give you rights to access, correct, delete and port your personal data, and to know whether it is sold or shared.

In OnMyWeigh's case those rights are satisfied by the app's design rather than by making a request to us:

Access and portability — your data is on your device, and the export feature produces it in open CSV and JSON formats at any time
Correction — every entry can be edited in the app
Deletion — Settings → Delete all data, or delete the app
Sale or sharing — we do not sell or share your personal information, and never have

We cannot action a request to retrieve or delete your weigh-in data on your behalf, because we do not have it.

For purchase records held by Apple or RevenueCat, contact us at privacy@rjkdigitalventures.com and we will assist where we are able.

10. Security

Your data is protected by your device's own security — passcode, Face ID or Touch ID, and iOS file encryption. Because nothing is transmitted to us, there is no server-side database of user health data to breach.

11. Changes to this policy

If this policy changes materially — for example if a future version adds Apple Health integration or cloud sync — we will update this page and the effective date above, and describe the change in the app's release notes.

12. Contact

Questions about this policy or your privacy: privacy@rjkdigitalventures.com

John Kusion Illinois, United States