LearnXtra vs SolvedBooks

LearnXtra UNIApp – The Ultimate Academic Companion for 100-Level Students (CCMAS Ready) LearnXtra UNIApp helps every new university student stay ahead academically by providing everything needed to succeed in 100-Level: structured CCMAS lecture notes, school-specific past questions, video tutorials, practice exams, and a personalized study timetable to build consistent reading habits. Features: • CCMAS-Aligned Lecture Notes Clear, well-structured notes for all major 100-Level courses across multiple departments and faculties. • Past Questions from Universities Nationwide Access a growing database of real past questions from universities across Nigeria -UNILAG, OAU, UI, UNN, FUTO, UNIBEN, LASU, RSU, FUTA, ABU, ATBU, UNIPORT, and more (Updated continuously). • Video Tutorials (Available & Expanding) High-quality video lessons to help you understand difficult topics faster (Requires internet). • Personal Reading Timetable Automatically generated study timetables to help you develop a strong, consistent reading culture. Plan your week, set reminders, and track your academic progress easily. • Practice Exam Mode Simulate real university exams and monitor your improvement over time. • Topic-by-Topic Practice Test yourself one topic at a time and get instant feedback on wrong answers. • Offline Access (after download) Download materials once and study anytime without internet. • Regular Quizzes & Academic Updates Stay sharp with periodic quizzes and timely learning updates. • More Features Coming Soon Including department-based study guides, school exam simulations, and interactive assignments. Note: The app requires a one-time activation and internet connection to download notes, videos, and past questions. After downloading, all materials remain accessible offline.

SolvedBooks is a free study companion for university and graduate students working through classic mathematics textbooks. Every solution is written from scratch by a working mathematician — not scraped, paraphrased, or copied from any publisher's solutions manual. Each exercise gets a complete worked proof in clean LaTeX, plus a brief final-answer summary. Currently covered — 1,400+ exercises: • Serge Lang — Undergraduate Algebra, 3rd Edition • Sheldon Axler — Linear Algebra Done Right, 4th Edition • John M. Lee — Introduction to Smooth Manifolds, 2nd Edition (GTM 218) • John M. Lee — Riemannian Manifolds: An Introduction to Curvature (GTM 176) How it works Question groups (5 exercises each) are locked by default. Tap "Watch ad to unlock" once per group and the unlock is permanent on your device. There is no in-app purchase to remove ads — the ads pay to maintain the app and cover more textbooks over time. What you will not find here • The original textbook problem statements — they are intentionally not reproduced • Hints, figures, or solutions copied from any publisher's manual • Accounts or cross-device sync — v1 is local-only and works offline Pen before Peek Please attempt each exercise yourself first. Productive struggle is where the mathematics lives. SolvedBooks is for the moments where you genuinely need a worked solution to keep moving forward, not a shortcut around the thinking. About the developer Built by Chris Pun, a math graduate working in differential geometry. If you find an error in a solution, or want a particular textbook covered, please get in touch — every piece of feedback is read. Independent study aid. Not affiliated with or endorsed by Springer, Pearson, Addison-Wesley, or any other publisher. All textbook titles, author names, and chapter references are used solely for identification.