Privacy Policy
Last Updated: July 12, 2026
LensTime is built on a simple principle: your health data belongs to you. LensTime does not collect, transmit, sell, or share your personal information. There is no account, no backend server, and no advertising.
The Short Version
- Everything you enter stays on your device and, if you enable it, in your own private iCloud account.
- We (the developer) never see, receive, or store your data.
- No analytics, no tracking, no advertising SDKs, no third-party services.
- No sign-up and no personal account are required to use the app.
Information Stored On Your Device
LensTime stores the information you choose to enter so it can remind you and show your history. This may include:
- Lens type, replacement schedule, and the dates you open or replace lenses.
- Prescription details you record — such as sphere (SPH), cylinder (CYL), axis, base curve, and diameter values.
- Optional photos of a prescription that you add yourself.
- Optional stock and supply counts, and app settings such as your reminder time.
This data is saved locally using Apple's on-device database. LensTime does not upload it to any server operated by us.
iCloud Sync
If you are signed in to iCloud and iCloud is enabled for LensTime, your data is synced across your own Apple devices using Apple's private CloudKit database. This sync happens directly between your devices and Apple's iCloud service under your Apple ID. The developer has no access to your iCloud data. This process is governed by Apple's Privacy Policy.
Notifications
LensTime uses local notifications to remind you when lenses are due for replacement. These reminders are scheduled and delivered entirely on your device. No notification content is sent to or through any external server.
Information We Do Not Collect
- We do not collect analytics or usage statistics.
- We do not use tracking or advertising identifiers.
- We do not integrate any third-party analytics, advertising, or social media SDKs.
- We do not have access to your name, email, location, contacts, or device identifiers.
In-App Purchase
LensTime offers a one-time optional purchase to unlock additional features. Payments are handled entirely by Apple through the App Store. LensTime receives only a confirmation from Apple that a purchase is active — it does not receive your payment details, card information, or billing address.
Children's Privacy
LensTime does not knowingly collect any personal information from anyone, including children. As no data ever leaves your device to reach us, no personal information is gathered from users of any age.
Changes To This Policy
If this policy changes, the updated version will be posted on this page with a new "Last Updated" date. Because LensTime does not collect your contact information, we are unable to notify you individually.
Contact Us
If you have any questions about this Privacy Policy, please get in touch.