Sharp vs QuestLearner AI

Learn anything — a few minutes at a time. Sharp turns big subjects into short, guided lessons you can actually finish — across everything you're curious about. Get better with finance, explore history, sharpen your logic, or dive into fashion, food, architecture and more. Whatever sparks your interest, Sharp breaks it into bite-sized steps and makes it stick. No lectures. No overwhelm. Just clear, focused lessons that build real understanding — one day at a time. WHY SHARP • Bite-sized lessons — learn in 5 minutes, not 5 hours • Guided, step-by-step — every idea explained simply, then reinforced • A world of subjects — from finance and history to fashion, food, architecture and beyond • Learn by doing — quick questions and instant feedback, not passive reading TEST YOURSELF WITH THE CLIMB Think you've got it? Take on the Climb — answer questions to test your knowledge and climb higher with every correct answer. It's a fast, satisfying way to challenge yourself, find the gaps, and prove how much you've really learned. STAY MOTIVATED • Build a daily streak and keep your momentum going • Earn XP for every lesson you complete • Rise up the leaderboard and compete with friends • Daily goals that bring you back LEARN WITH FRIENDS Follow friends, see where you rank, and turn learning into a friendly competition. A little rivalry is a great reason to keep your streak alive. BUILT FOR REAL LIFE Sharp fits into the gaps in your day — your commute, a coffee break, the few minutes before bed. Small, consistent steps add up to real knowledge. Whatever you've always wanted to understand, start your first lesson today — and discover how much you can learn when it finally feels easy. Terms of Use (EULA): https://www.sharp-app.com/terms/ Privacy Policy: https://www.sharp-app.com/privacy/

Type any subject. Play it. Find out when you'll forget it. QuestLearner AI turns whatever you want to learn — the French Revolution, coffee brewing, Spanish past tense, quantum physics — into an arcade run you actually play. Your champion advances down a neon lane, blocks of ignorance come at you, and every one is a real question. Answer it and a light bar shatters the block. THE FADE LINE This is the part no quiz app gives you. QuestLearner AI measures how fast YOU forget a subject from your own answer history, then draws the curve: where your recall sits today, the day it drops below your bar, and how much a replay right now is actually worth at the date you're aiming at. It goes down while you're away, because that is the honest thing for it to do. BUILT ON PUBLISHED RESEARCH, NOT VIBES The forgetting curve, the spacing schedule and the difficulty controller all come from published work on how memory actually behaves — and the app shows you its arithmetic instead of asking you to trust a black box. DIFFICULTY THAT HOLDS THE LINE Learning is fastest at about 85% correct — hard enough to be worth something, easy enough to keep going. The app watches your rolling accuracy and picks the next question to hold you in that band, and it tells you where you are in it. A WRONG ANSWER COSTS YOU NOTHING No lives. No timers. No waiting nine minutes to play again. No ads, in any tier. Missing a question is how learning works, so it costs you nothing at all. BOSS OF IGNORANCE Every quest ends in a boss made of exactly what you haven't mastered yet. It only falls to a chain of correct answers — so it tests real retrieval, not luck. EARN YOUR CHAMPION Skins, emblems and titles come from things you actually did: a boss cleared, a quest at 80%, a chain of eight, two weeks at your target. Nothing cosmetic is for sale, in any tier. NO DAILY STREAK TO BREAK Progress is measured in rolling weeks against a target you chose. A quiet day costs you nothing. FREE FOREVER Playing and replaying every quest you own, boss battles, the arcade run, the difficulty controller, mastery, the weekly rhythm, the whole Champion Forge, the Fade Line for your three most at-risk quests, and 3 new AI-written quests a day. MASTERY PASS (optional subscription) - Unlimited new quests a day - The Fade Line for every quest, not just three - The horizon planner — set the date you're aiming at and everything re-ranks - Your weak spots, ranked by how likely you are to miss them today - Your whole history and every trend, not just the last four weeks Mastery Pass is $9.99 per month or $59.99 per year, with a 7-day free trial. Payment is charged to your Apple ID at confirmation of purchase. It auto-renews unless canceled at least 24 hours before the end of the current period, and you can manage or cancel it any time in your Apple ID settings. Questions are written by AI from the topic you type, so they can be wrong or out of date. One tap on Report retires any question immediately — and Report is free in every tier, always. Privacy Policy: https://preview.apppublishing.ai/legal/767/privacy Terms of Use (EULA): https://preview.apppublishing.ai/legal/767/terms