SolvedBooks vs Geography Master

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.

Geography Master is the complete study app to review geography and ace your tests, from middle school to high school. The whole syllabus — the world, your country and every continent — with theory, quizzes, flashcards and mind maps for every topic. WHY CHOOSE GEOGRAPHY MASTER • Active studying, not just reading Every topic comes with concise theory, self-assessment quizzes, flashcards for quick review and mind maps to lock in the concepts. • Atlas of 195 countries Complete profiles for every country: flag, capital, population, area, density, continent, currency, languages and fun facts. With search and filter by continent. • Explore the interactive map An illustrated world map: tap a continent and discover all its countries. Unique among geography apps. TOPICS COVERED • Tools of geography: orientation, coordinates, maps and scale, time zones, GPS and GIS • The Earth in space: rotation, revolution, seasons, parallels and meridians • Physical geography: plate tectonics, volcanoes and earthquakes, mountains, rivers, seas and oceans • Climate and environments: atmosphere, climate zones, biomes, hot, temperate and cold regions • Population and cultures: demographics, migration, world languages and religions • Cities and settlements: urbanization, megacities, urban sustainability • Economic geography: economic sectors, resources, industry, trade, globalization • Environment and sustainability: climate change, renewable resources, the 2030 Agenda • Geopolitics: states and borders, forms of government, the UN and international organizations • Continents in depth: Europe, Asia, Africa, the Americas, Oceania and the polar regions STUDY TOOLS • AI Chat: an assistant for any geography question • AI Scanner: snap your notes or textbook pages and generate maps and flashcards • AI-generated mind maps and flashcards • Personalized onboarding on your goals and tricky topics • Study reminders and streaks to keep your momentum PERFECT FOR Middle and high school students reviewing geography, preparing for tests and exams, or anyone who wants a world atlas in their pocket. Start today: download Geography Master and study the whole world in one app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/