Stackd vs AI Study Sheet

This is a simple study timer app that allows you to record and manage your study time by subject. Simply measure your time with the timer and save it. You can also log sessions manually or add entries for past dates. You can record everything together, including subjects, study materials, pages, and notes. You can view the big picture of your studies by checking your subject balance with weekly graphs and reviewing your progress streaks on the calendar. No ads, no social media features, and no account registration required. All data is saved on your device, so there are no privacy concerns. Perfect for anyone who wants to focus on learning, from exam preparation to certifications and language studies. [Main Features] - 3 timer modes (Stopwatch, Countdown, Pomodoro) - Management of subjects, materials, pages, and notes - Weekly graphs to check subject balance (bar chart & donut chart) - Calendar to visualize study days with color-coding - Display of consecutive study days (streaks) - Daily study reminder - Backup and data export functions [Stackd Pro (One-time purchase)] - Monthly graphs and cumulative line graphs - Setting weekly goals and checking achievement rates - 9 color themes - Home screen and lock screen widgets

Study directly from the materials you already use. AI Study Sheet turns textbooks, worksheets, lecture notes, screenshots, photos, and PDFs into active-recall study sheets by automatically selecting and masking important terms. There is no need to manually choose every word to hide or rebuild your materials as flashcards. Import your study material and start recalling what matters. TURN YOUR MATERIALS INTO STUDY SHEETS Scan a page, select photos, or import a PDF. ・Scan textbooks, worksheets, and notes ・Import multiple photos at once ・Import PDFs with up to 20 pages ・Keep the original text, diagrams, tables, and page layout No need to recreate your study materials in another format. KEY TERMS ARE SELECTED AUTOMATICALLY AI Study Sheet analyzes your material and identifies words and concepts worth remembering. Instead of manually highlighting or masking every important term, the app automatically prepares the page for active recall. It works with school, university, certification, and professional study materials. CONTROL HOW MUCH IS HIDDEN Choose the amount of masking that fits your study stage: ・Less ・Standard ・More ・Before Exam Start with fewer masks while learning new material, then hide more as an exam approaches. You can also remove automatically selected masks or add your own. RECALL FROM THE ORIGINAL CONTEXT Unlike traditional flashcards, AI Study Sheet keeps the material you already recognize. The surrounding text, diagrams, tables, and page structure remain visible while key information is hidden. Reveal the full page when you need the answer, then turn the masks back on and try again. TRACK WHAT YOU REMEMBER After studying, mark each material as: ・Remembered ・Unsure ・Not Remembered Saved materials stay organized in your Library, making it easy to return to topics that still need review. FOR SCHOOL, UNIVERSITY, AND PROFESSIONAL STUDY Use your own materials for: ・School and university exams ・Entrance exam preparation ・Everyday revision ・Language learning ・Professional certification exams ・Accounting, finance, legal, and IT study ・Workplace training and professional learning AI Study Sheet is not tied to one subject or exam. If it is something you need to remember, you can study it from the material you already have. PRIVATE BY DESIGN Your study images and recognized text are processed on your device. Your materials do not need to be uploaded to an external server, and no account or sign-in is required. START FREE Save up to 3 study materials to get started. Complete your first study session to expand the free allowance to 10 saved materials. If you need more, Unlimited Saves is available as a one-time purchase. No subscription required. Spend less time preparing study materials and more time remembering what matters.