StudyDay vs MathTier

Study timer & focus planner for students and exam takers — track every subject, hit your study goals. StudyDay: Study Timer & Log is a simple, beautiful study tracker built for students and exam takers. Tap to start a stopwatch for any subject, stop when you're done, and your time is saved automatically. No setup, no complexity. KEY FEATURES • Subject Timer — One tap starts a stopwatch for any subject. Switch subjects anytime; the previous one stops automatically. • Pomodoro Timer — Focus and rest in turns (25 and 5 minutes by default, adjustable in Settings). You get a notification when each round ends, and tomatoes show how many rounds you finished today. • Monthly Calendar — See which days you studied at a glance. Tap any day to jump straight to the timer. • Study Stickers — After each session, pick a sticker that matches your mood. Your calendar fills up with small victories. • Detailed Statistics — View your study time by day, week, or month. A bar chart shows your weekly rhythm; a donut chart breaks down time by subject. • Manual Entry — Forgot to start the timer? Enter time directly for any subject and date. Fix or delete any record from the study log. • Subject Management — Add as many subjects as you need, each with its own color, so your data is always organized. • Dark Mode — Follows your phone's setting automatically. Easy on the eyes for late-night study. • Color Themes — Coral is always on. Pastel Blue, Green and Purple can each be unlocked for 7 days by watching a short ad. DESIGNED FOR SIMPLICITY No account required. No internet connection needed. All your data stays on your device — private, always. Whether you're preparing for an exam, tracking daily study habits, or just curious how much time you spend on each subject, StudyDay gives you the clarity you need. StudyDay is supported by ads: a banner on the Calendar and Stats screens, and an optional video ad only when you choose to unlock a color theme. Privacy Policy: https://www.junu.co.kr/terms/studytime/privacy/

What tier is your maths, really? MathTier is ten tiers of maths problems — Kindergarten, Elementary, Middle School, High School, Undergrad, Graduate — and a ladder you climb by actually being right. THE LADDER Every answer feeds a rolling window of your last 20 problems in that tier. Keep your accuracy up and the promotion gauge fills. At 100% a promotion trial opens: five problems from the next tier, four correct to move up. Fail and you lose nothing — your tier never goes down. This is a hobby, not an exam. ANSWERS COME WITH REASONS Every single problem gives you the answer AND a step-by-step explanation of how to get there. Not "the answer is 7" — the actual working, one line at a time, with the key idea stated plainly. Explanations are free for everyone, forever. An app that sells you the reason is an app that wants you to stay stuck. TEN TIERS, HONESTLY BUILT Kindergarten through Advanced High School are generated fresh every time, so you will not run out: counting, times tables, clocks, fractions, ratios, equations, factoring, Pythagoras, logs, trig, sequences, limits, derivatives, integrals, combinatorics. University and graduate tiers are hand-written — linear algebra, multivariable calculus, ODEs, series, complex analysis, discrete maths, real analysis, abstract algebra, topology, measure theory, functional analysis, probability. WHERE AM I? — 30-SECOND PLACEMENT A 15-question adaptive test finds your level and hands you a card that says it. SHARE THE CLIMB Every promotion produces a card built for posting — your badge, your rung on the ladder, your accuracy and streak. Story and square sizes, five themes. TRULY OFFLINE No account. No sign-up. No network calls of any kind. No ads, no analytics, no tracking. Works in airplane mode, on a plane, in a tunnel. Your progress is yours and it stays on your device. FREE AND PRO Kindergarten through Middle School: unlimited, free. Daily challenge: free, the same ten problems worldwide. Higher tiers: five taster problems a day. MathTier Pro is one payment, forever — all ten tiers unlimited, the wrong-answer notebook, detailed statistics, unlimited placement tests, and every share-card theme. No subscription. Made for people who like maths the way other people like crosswords.