ice sudoku vs cryptoscreen

【High performance, rich sudoku bank】 ice sudoku uses an efficient random number algorithm and uses multi-threaded concurrent technology to efficiently utilize Apple A series processors. It can quickly generate 5 types of Sudoku of different difficulty levels (beginner, easy, medium, difficult, and top). It provides a comprehensive question bank covering SE 1.2~11.9 and supports search and random retrieval. (1) Beginner, easy, medium, difficult, and top Sudoku special skill questions: 999 questions each (2) Higher algorithm level Ice Sudoku Sudoku (SE 8.3-SE 9.2): 999 questions (3) Peak algorithm level Icey Comet Sudoku (SE 8.8-SE 10.5): 999 questions (4) Super first-class difficulty Sudoku (SE 10.5+): more than 100 questions 【Extreme logic, advanced challenge】 It has a complete logic analysis system that supports step-by-step solutions for any Sudoku, helping you sort out the logical reasoning of each step. It has a rich library of targeted Sudoku training to help you become a Sudoku master. Exclusive challenge mode, test level, speed challenge, unlock exclusive icons, so that Sudoku is no longer boring. [Privacy protection, offline play] The developer promises not to collect any data from ice sudoku, and you can enjoy all functions without network connection, no ads, no in-app purchases, and fully protect your privacy and security. [High freedom, customizable] Supports free circle change to painting, especially suitable for iPad with Pencil. Supports Sudoku customization, where the numbers are determined by you, and there are templates to generate axial symmetric Sudoku. The archive system is complete, and you can export 81 Sudoku strings to facilitate the management of your Sudoku library and free sharing. [Rich functions, simple and intuitive] The interface design is simple and clear, and continues to improve. iOS 13 and above devices support Sudoku scanning recognition. Automatically fill in candidate numbers, error protection, highlight candidate numbers, candidate number background color adjustment, quick fill, and more convenient functions are waiting for you to explore. [Continuous updates, support feedback] Whether you are a master who can solve all kinds of Sudoku easily, or a Sudoku beginner, you can find the right questions for you here. If you have better suggestions, please contact us so that we can hear your voice! Official website of ice sudoku: https://github.com/tropicalwzc/ice_sudoku.github.io

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