Passnote vs DATARAKU

Passnote turns preparation for Japan's Information-Technology Engineers Examinations into a clear daily study routine. Practice past questions for the IT Passport, Fundamental Information Technology Engineer, Information Security Management, and Applied Information Technology Engineer examinations on your iPhone or iPad. Review mistakes and weak areas without losing your place. Key features: - Practice based on past exam questions - Mock exams designed around the real test format - Review of mistakes and weak subject areas - Glossary cards and a focused review queue - AI-powered explanations and study support - Daily study tasks from Tomo - Account-based progress sync across devices Passnote is designed to help you understand why an answer is correct, not simply memorize it. Short sessions during a commute or break always lead you back to the next useful question or term. Core study features are available for free. A Pro membership expands access to AI explanations, mock exams, weak-point review, study tasks, glossary cards, and other tools for exam preparation. Passnote is an independent study tool. It is not an official app of IPA (Information-technology Promotion Agency, Japan) or any examination body. Exam questions and in-app study content are primarily presented in Japanese. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

An educational visualization app that lets you UNDERSTAND data structures by watching them - not by reading. Abstract concepts like stacks, queues, trees, and hash tables come alive as animations where the structure itself deforms in response to your operations. [ Basics - 4 structures ] - Stack (LIFO) - Feel "last in, first out" through stacking motion - Queue (FIFO) - Watch the entry and exit ends of a queue - Array - Visualize random access and the shifting of elements on insert / delete - Linked List - Nodes connected by arrows, rewired on insert and delete [ Advanced - 4 structures ] - Binary Search Tree - Values drop into place after branching left or right by comparison - Heap - Up-heap and down-heap motion in a complete binary tree - Hash Table - Keys travel through a hash function and land in a bucket - Graph - Nodes and edges showing adjacency [ Features ] - Every operation animates as a continuous deformation (no instant teleporting) - Operation log to review the meaning of each step - Each structure includes complexity notes (access / search / insert / delete), pros and cons, and real-world usage examples - Ads are never shown while an animation is playing - designed to preserve focus - Universal app for iPhone and iPad - Japanese and English (follows OS language) [ Who is this for ] - Students learning programming for the first time - Anyone preparing for IT exams - Engineers who want to re-grasp data structures visually - Curious minds who love watching things move [ Companion to ARURAKU ] The second information-systems title of the Raku Series, sibling to ARURAKU (algorithm visualization). The two apps cross-link, so the heap screen here links to ARURAKU's heap sort, and the graph screen here links to ARURAKU's BFS / DFS. Learn the "motion of computation" and the "structures that carry it" side by side. [ Note on pricing ] This app is completely free with no in-app purchases or subscriptions. To support development and maintenance we display Google AdMob banner and interstitial advertising. Ads are never shown while an animation is playing.