Lentia Downloads & RevenueLentia: Contact Lens Tracker · App Store

One payment, for life: no subscription, no ads, no account.

Designed by someone who wears contact lenses, for people who wear contact lenses.

Lentia tells you, at a glance, how many days each lens has left, how long you've had them in today and when it's time to take them out, change them or buy more.

EACH EYE, ON ITS OWN
Your eyes aren't the same, and Lentia doesn't pretend they are. Every eye has its own lens: brand, power, cylinder and axis, base curve, diameter, replacement schedule and the day you opened it. Changed only the left one because it tore? Just log that one.

NEVER WEAR THEM PAST THEIR DATE
• Daily, two-week, monthly, three-month or any number of days you choose
• Count calendar days, or only the days you actually wear them
• A reminder on change day, another the evening before (at the time you pick) and a nudge if you still haven't changed them
• A big ring per eye shows the days left, so you know without opening anything

TODAY, IN ONE TAP
Tap "I put them in" and Lentia counts the hours and reminds you to take them out. The Today card turns amber when it's almost time and coral when you've gone over, always with a line that says so. Forgot to log something? Set the real time, merge it with an earlier session or undo an accidental tap.

YOUR STOCK AND YOUR CASE
• Spare lenses per eye, how long they'll last and a warning when you're running low
• Your shop's link, one tap away to reorder
• How long your lenses have been sitting in the same solution, with a reminder to refresh it
• When to open a new bottle of solution and when to replace your lens case
• Your next optician check-up

HISTORY THAT MAKES SENSE
A monthly calendar shaded by hours worn, your average per day, every lens you've opened and how it ended: on time, late or torn.

WHEREVER YOU ARE
• Apple Watch app and watch face complications
• Home and Lock Screen widgets, with a button to log without opening the app
• Siri and Shortcuts: "I put my lenses in", "How many days do my lenses have left?"
• iPhone, iPad and iPhone Duo, in light or dark mode
• Syncs through your own iCloud: your iPhone and iPad stay up to date every time you open the app
• English, Spanish, German, French, Italian and Portuguese

PRIVATE BY DESIGN
No account, no ads, no tracking. Your data stays on your devices and, if you like, in your own iCloud. Only you can see it.

PAY ONCE, KEEP IT FOREVER
Most lens apps charge you every month for what is, at heart, a calendar with reminders. Lentia is a single purchase with no subscriptions and no in-app purchases. Every feature is included.

Lentia helps you keep track of your lenses; it isn't medical advice. Always follow the instructions of your optician and of your lens and solution makers.