Crestellar Academy

The all-in-one HKDSE Maths app for iPhone and iPad — 名校 exam questions, timed mock exams, past-paper solutions, revision notes, and every subject's 5** cutoff since 2012. Free to start, no account needed.

DAILY PLAN
• A short level check, then one free quiz a day aimed at your weak topics: easy first, no time limit, 5, 10 or 15 questions, a daily reminder, and offline once today's quiz is downloaded
• After each quiz: your score, streak, level estimate and what improved
• Shields and pauses protect your streak; My plan shows your level, calendar, topics and badges, secret ones too
• Mark a Long Question "I got it" or "Not yet": your marks count towards your level and topics
• Home Screen widgets: your streak and grade trend, an HKDSE countdown, or today's timetable

JUPAS CALCULATOR
• All 371 programmes at the eight UGC-funded universities and HKMU: admission scores, applications and offers back to 2012 (2026 for HKUST, CUHK, PolyU and HKMU; quartiles where published), tables of admitted students' subject levels where published, applicants per place, and official descriptions
• Enter your HKDSE results: your score for 363 programmes, each under its own formula, and where you stand against the median — in 2024 too, where the formula is the same
• Search, sort four ways and plan 20 choices in Bands A–E like the JUPAS form

PRACTICE ENGINE
• Thousands of MC and long questions from top HK schools — by year, topic and difficulty, plus an out-of-syllabus Challenging tier
• Focused practice: almost every question is matched to the subtopic it mainly tests, and you choose which other subtopics it may use
• Timed S1–S6 mock exams that mirror the real HKDSE Paper 2, slot by slot — your first 2 are free
• Instant marking: a grade estimate, per-question review, per-topic time and accuracy
• DSE LEVEL PREDICTOR: your mock score is graded on the REAL cut-offs of the last six HKDSE Maths exams, with how many more questions reach the next level
• One-tap drill on your weakest topic
• Long-question sessions of 5–50, unseen first
• Save questions; share a result card

5** SOLUTIONS
• Every question has a full marking-scheme solution — typeset, never a scan
• Max plans unlock advanced solutions: faster 5** techniques, exclusive calculator programs, and Typical Questions & Skills for all 19 chapters

WRITE ON THE QUESTION (iPad)
• In quizzes, long and saved questions: pens, highlighter and eraser, pinned to the figure as it scrolls and zooms — or a scratch sheet
• Hold at a stroke's end and it snaps perfect — lines, circles, polygons, parabolas — then drag its corners
• Apple Pencil always draws and double-tap swaps to the eraser; workings are never stored

VISUAL MATH LAB
• 43 interactive topics — Compulsory Part (21), M1 (12) and M2 (13) — drag real DSE figures, watch the maths respond
• AM–GM, Circle Angle Theorems, M2 Systems of Linear Equations and M1 Central Limit Theorem are free with no account; the rest are free to read — upgrade to interact

REVISION TIMETABLE
• Plan all 25 HKDSE subjects with official papers and topics: drag blocks, add reminders, or let "Build my week" fill your free hours; a Progress tab tracks mastery

FREE TO START
• No account needed: HKDSE cutoffs for 15 subjects since 2012, every programme in the JUPAS Calculator, and a question 30 seconds after download
• A free account adds your daily plan, full past-paper solutions, illustrated revision notes, the revision timetable, your JUPAS score and choices, and 80 tokens a month

FAIR PRICING
• Top-up token packs that never expire
• Plus, Pro and Max cost a fraction of one tutoring lesson
• One subscription covers iPhone and iPad
• Your plan stays with the phone number you bought it with

Fully bilingual: English and Traditional Chinese.

Built by Hong Kong DSE Maths teachers. Download free and aim for your 5**.

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