HappyKey vs FishLens AI

HappyKey provides you with a simple keyboard with many useful math symbols. It will fulfill all of your math notation needs with numbers, superscripts, pi, math operators and relations, infinity, and beyond. Install the app first, then to setup the keyboard go to Settings > General > Keyboard > Keyboards > Add New Keyboard > HappyKey Note: This is not a calculator. This is an additional keyboard that makes it easier to type math notation. Credit for the keyboard functionality and design goes to the open source Tasty Imitation Keyboard by Alexei Baboulevitch (GitHub user archagon).

Photograph a fish to explore its likely species, body markings and habitat. FishLens brings species profiles and behavior or aquarium information together, helping you keep track of the fish you observe at the lake, coast or aquarium. Explore shape and markings Take a clear whole-fish or side-profile photo, or choose one from your library. Check the name and key identifying features, and correct the match when needed. Explore the species profile Explore habitat, behavior and aquarium-related information. Use those details to learn more about the fish in front of you. Keep relevant context Read species and reported hazard information alongside your observation. Add notes about the details you want to revisit. Keep an observation journal Save an unlocked result, add notes and organize items in folders. Revisit your saved details and identification history as you explore. Record your measured catch length, weight and bait, and see your longest and heaviest catches for each species. Filter saved observations by family, genus or reported hazards. Learn with 12 guides Read 12 topic guides in step-by-step pages, alongside other in-app articles. No subscription is needed to read the guides. Ask your next question Open the assistant from the home page to ask questions and keep learning. Usage limits are shown in the app. Read the safety note This is an educational identification and reference tool, not a professional or safety authority. Photo matches can be wrong, and details may be incomplete; missing risk information does not mean safe. Do not use the app to decide whether anything can be eaten or safely handled. Verify important identifications independently and follow local rules. The app does not decide whether a catch may be kept; check local rules. Species profiles are not complete fishing or aquarium-care plans. Understand your privacy We use PostHog for limited product analytics and AppsFlyer to measure installations and ads for our apps. Eligible event data may be shared with Meta for advertising measurement and optimization under applicable privacy controls. Photos go to our recognition service and Google's AI models to identify them. They are not used for advertising. See our Privacy Policy for details. Explore access and purchases Explore with an initial allowance of complete photo-identification results. Once it is used, parts of new results are locked and a paid upgrade is offered. Availability and limits are shown in the app. Paid access applies to this app. Check the purchase screen for available options, prices, trial eligibility and usage limits. A trial, if offered, depends on eligibility. Subscriptions renew automatically unless canceled; manage or cancel them in your App Store account settings. Read the terms Terms of Use: https://fishlens.app/terms Privacy Policy: https://fishlens.app/privacy Both are also available inside the app.