Flenz

Contact lens cycle tracker

Only for iPhone

$1.99 · Designed for iPhone. Not verified for macOS.

iPhone

The simplest way to never wonder, "When did I change these?" Flenz is a contact lens replacement cycle tracker. When the day comes, trace the circle of dots with your finger to cut it. One gesture logs the change and starts your next cycle. ● FEATURES - 2-week, monthly, or custom cycle lengths - Editable start date — begin accurately even mid-cycle - Days remaining at a glance in a dot-matrix display - Local reminder at 8:00 PM on replacement day - Replacement history on a calendar - Home Screen widget with days left - Monochrome color themes and dot-shape customization ● DESIGN Monochrome with a dash of fluorescent yellow. A quiet, tool-like interface set in dot matrices and monospace type. ● PRIVACY Flenz collects and transmits no user data. Everything is stored only on your device. No account required. Note: Flenz is a scheduling tool. Always follow your lens product's instructions and your eye care professional's guidance on wearing time.

Ratings & Reviews

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Log replacements more easily. - Log a replacement from a notification or Home Screen widget without opening the app - Track unused lens stock and see when to restock - Issue a cycle receipt from History and share it on social media - Edit the start date of the current cycle - Added first-time onboarding We also made small visual and usability improvements.

Version 1.1

The developer, Keito Yoshioka, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Keito Yoshioka
    Size
    • 1.5 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • English and Japanese
    Age Rating
    4+
    Copyright
    • © 2026 Keito Yoshioka
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.