PatternBank vs ARC Private PDF Scanner

Stop forgetting LeetCode solutions. PatternBank helps you retain what you practice by turning solved problems into confidence-based spaced repetition reviews. Solving hundreds of problems is not the same as remembering them. PatternBank gives you a focused system for tracking what you solved, how confident you felt, which patterns were involved, and when you should review next. Use PatternBank to: - Track algorithm problems by title, difficulty, confidence, notes, and patterns - Review problems on a spaced repetition schedule - Rate confidence from 1 to 5 stars after each review - Connect public LeetCode Activity to bring recent accepted submissions into Today - See due reviews, LeetCode solves, and completed work in one daily workflow - Track progress by pattern, review history, confidence trend, and 30-day projection - Exclude problems you do not want in the review queue - Start locally without an account, then sign in when you want cloud sync PatternBank is built for technical interview prep, algorithm practice, and long-term recall. It keeps the workflow simple: capture the problem, rate your confidence, review what is fading. LeetCode Activity uses public profile activity. PatternBank does not ask for your LeetCode password.

ARC Scanner turns paper into text you can use. Everything happens on your device, and nothing is uploaded. Scan a document with your camera or import photos, and ARC Scanner recognizes the text on your device. Then export exactly what you need: • Searchable PDF: looks like your scan, and the text can be selected, copied, and searched • Plain text: one .txt file, separated by page • Structured JSON: pages, text blocks, positions, and confidence, ready for your own scripts and tools • All Files: the PDF, page images, text, JSON, and a manifest in one folder • Plain PDF, JPEG, or PNG pages when you only need images PRIVATE BY DESIGN • Text recognition runs on your device. Nothing is uploaded. • No account, no ads, no tracking. MADE FOR REAL DOCUMENTS • Multi-page scanning with automatic edge detection • Import several photos at once • Delete a page you don't need, with undo • Compact PDFs: camera scans are embedded without being compressed again • On iOS 26 and later, recognition keeps document structure, such as titles, where it is detected ONE PRICE Pay once. No subscription, no in-app purchases, no watermarks, no page limits. Recognized text can contain mistakes. Please check it before relying on it for legal, financial, or medical purposes.