Math Central vs Skim

Put your math skills to the test with Math Central. Math Central helps test and grow your math skills so you can become a math whiz. All questions are randomly generated and don't repeat so you can have an enjoyable experience learning from a variety of problems. You can practice the following math concepts in Math Central: - Arithmetic: Addition, Subtraction, Multiplication, Division, & Mixed Ops - Exponential: Basic Exponents, Fractional Exponents, nth Roots, & Scientific Notation - Equations: Basic Equations, Quadratic Equations, Functions, & Proportions - Statistics: Basic Statistics - Geometry: Shapes & Lines - Measurements: Comparing & Converting Lengths - Fractions, Decimals, Percentages, & Conversions - Other: Number Systems; Speed, Distance, Time; Sequences; & Number Theory You can also increase the difficulty level to match your skill level so you can always feel challenged. In addition, you can track your results to see your progress and compare it to others with the Game Center Leaderboard. ARE YOU READY TO BE A MATH WHIZ? Give us any feedback or suggestions at feedback.akashcentral@gmail.com.

Pick how you want to learn: Deep Understanding, ELI5, Memorize, or Quick Review. Skim's AI breaks the document into bite-sized cards in that mode. Upload any document — PDF, Word, PowerPoint, plain text, or Markdown and get tailored cards. Swipe any term to ask Skim about anything unclear, quiz yourself to see what stuck, and track your progress along the way. Same dopamine, actually useful. HOW IT WORKS 1. Upload a PDF, slide deck, doc, or notes 2. Skim's AI breaks it into bite-sized cards — each focused on a single idea 3. Swipe through. Tap any term to ask Skim for a deeper explanation 4. Quiz yourself to see what actually stuck 5. Track your streak and watch your progress unlock GREAT FOR • Students prepping for exams or working through textbooks • Researchers digesting papers and reports • Professionals navigating contracts, briefs, manuals, and decks • Self-learners working through online courses and books • Anyone who's collected docs they meant to read FOUR WAYS TO LEARN • Deep Understanding — comprehensive, concept-first • ELI5 — plain language and analogies • Memorize — quiz-dense, atomic facts for recall • Quick Review — punchlines only, for the refresh ASK SKIM ANYTHING Tap any term in a card for an instant explanation. Or type a follow-up question — Skim's AI assistant stays grounded in what the document actually says, so every answer ties back to your source. TRACK YOUR PROGRESS • Reading streak counter • Card mastery % per document • Quiz accuracy that finds your weak spots • Weekly activity at a glance SUPPORTED FORMATS PDF, PowerPoint (.pptx), Word (.docx), plain text (.txt), Markdown (.md) AI may make mistakes — Skim's cards are reading aids, not authoritative answers. Verify critical information against your source. PRO ($6.99/month or $69.99/year) • Unlimited document processing • 140 AI assistant questions per month ULTRA ($13.99/month or $139.99/year) • Everything in Pro • 280 AI assistant questions per month Cancel anytime in iOS Settings. PRIVACY FIRST No ads. No tracking. No selling your data. Your documents stay yours. Read our full policy at https://tryskim.app/privacy. Privacy Policy: https://tryskim.app/privacy Terms of Use: https://tryskim.app/terms Support: hello@tryskim.app