Personal reminder

Contact Lens Date Reminder

English iPhone name: Lensmark.

iPhone app · Independent software by Danila Pryadko

A private replacement-date calendar and reminder for contact-lens wearers.

Free to download. Pro is optional.

View on the App Store

Lensmark is a personal calendar and reminder. It does not diagnose, prescribe, make treatment decisions, or assess contact-lens safety, efficacy, or emergencies. No regulatory classification is claimed here.

Optional Pro

An optional one-time Pro purchase adds spare-lens counts and a replacement summary for each eye. Recording dates, setting reminders and viewing the full history stay free. Replacement dates still come from your product instructions or eye-care professional.

A practical workflow

When to use Lensmark

  1. Keep left and right lens dates separate.
  2. Copy dates established by your own instructions.
  3. Request local reminders and keep a separate date record.

Choose this app when its documented scope fits the task you want to keep on your iPhone. The free web resources below are independent alternatives for a single worksheet or calculation.

Separate left-eye and right-eye entered dates; example dates are not recommended wear intervals.
Separate left-eye and right-eye entered dates; example dates are not recommended wear intervals. Screenshot from the public App Store listing for version 1.0.1, retrieved November 12, 2026. Display names and layout can vary by installed version. Example values are not recommendations.

Before you choose

Will it choose a safe replacement interval?

No. Enter dates based on your lens instructions and eye-care professional. A date does not determine whether a lens is safe to wear.

Are reminders guaranteed?

No. iOS permission, Focus and other settings control presentation and delivery. Keep a separate record of important dates.

Can I reinstall it to fix reminders without losing data?

Lensmark currently has no backup, sync or export. Removing the local app container can remove its records. Preserve needed dates separately before any deletion.

Use it without an app

Free resources for this activity