cryptoscreen vs LensTime

cryptoscreen is a private note app for messages that should not last. Write a note, choose a six-digit PIN, and cryptoscreen encrypts the message on your iPhone before it leaves the device. Share the generated link and send the PIN separately. The recipient can read it once in the iOS app, with an App Clip, or in a web browser when you allow web reading. No app download is needed for browser reading. CHOOSE HOW YOUR MESSAGE CAN BE READ Allow app and web reading for easier sharing, or choose app-only reading. Both the link and the PIN are required. Web-enabled messages are decrypted in the recipient's browser and become unavailable for another read after they are opened. ONE-TIME MESSAGES - Encrypt notes locally before upload. - Open normal messages once, then make them unavailable to other readers. - Destroy a message after the third wrong PIN attempt. - Let unopened links expire after the retention window. - Check availability in Sent Messages, including messages opened on the web. GUARDED READING ON iOS The iOS app and App Clip use a guarded reader to reduce casual screen exposure. The reader clears when iOS reports a screenshot. Screenshot protection is best-effort: iOS reports normal screenshots after capture. Browsers cannot provide the app's screenshot detection or capture protection, and no app can protect against external cameras or compromised devices. TEXT IS FREE. IMAGE SENDING IS PRO. Send text-only messages and read received text and images for free. Pro lets senders attach encrypted images. Restore purchases and manage your subscription from Settings. cryptoscreen does not require accounts, profiles, or contact lists. Messages are encrypted before upload; the service stores encrypted content and the metadata needed for expiry, PIN attempts, and message availability. Optional interaction-status sharing is off by default. Support: https://cryptoscreen.app/support Privacy Policy: https://cryptoscreen.app/privacy

Contact lenses don't come with a memory. LensTime does. If you've ever stared at a lens and thought "wait, when did I put these in?", LensTime is for you. It quietly counts down the days for each eye and keeps reminding you until you actually change them. No ads. No subscription. No account. Just a reminder that works. TWO PROBLEMS, SOLVED 1) "How long have I been wearing these?" Monthly and biweekly lenses expire on a schedule, no matter how often you wear them. LensTime tracks the days for you, so you stop guessing and stop wearing lenses past their time. 2) "Did my numbers change? Did I have astigmatism?" Nobody remembers their old prescription after an eye exam. LensTime keeps every exam and shows exactly what changed: "Left SPH up 0.25". Just the numbers, never advice. LEFT AND RIGHT, TRACKED SEPARATELY Real life isn't symmetric. One lens tears, the other is fine. Changed just one? Tap that lens in the case, say why if you like, and tap "I Changed the Left Lens" or "I Changed the Right Lens". Only that eye starts over. The other keeps its own countdown. Changed both? "I Changed Both" is right on the home screen. REMINDERS THAT DON'T GIVE UP - An early heads-up a few days before the change date - A reminder on the day itself - After that, a nudge every day for a week, then weekly, until you mark it done All at the time you choose. Already changed it? Mark it straight from the notification. LOG AN EXAM IN SECONDS In a hurry? Take a photo of the prescription and add the numbers later. Every field opens at your last exam's value, so only what changed needs a turn of the wheel. Cylinder and axis stay folded away unless you have astigmatism. KEEP YOUR PRESCRIPTION HANDY SPH, CYL, AXIS, base curve and diameter, all on one screen and ready to copy when you reorder. THE CORE IS FREE, FOREVER - Track one lens profile (left and right) - The full reminder chain - Asymmetric left and right changes - Your latest prescription and what changed LENSTIME PRO, ONE-TIME PURCHASE, NO SUBSCRIPTION - Home and lock screen widgets - Multiple lens profiles - Full prescription history and chart - Stock and solution tracking with low-stock alerts - Yearly stats: how many changes, how many were planned THIRTEEN LANGUAGES English, Turkish, German, Spanish, French, Italian, Danish, Norwegian, Swedish, Polish, Romanian, Korean and Japanese. PRIVATE BY DESIGN Your data stays on your device and in your own iCloud. No tracking, no analytics, no servers. We don't collect anything. LensTime is a reminder app, not a medical device and not medical advice. For decisions about your eye health, talk to your eye doctor.