StoichioAI vs LearnSys DSE Study Captain

StoichioAI is for Hong Kong secondary chemistry. Students write calculation steps on a whiteboard. The AI reads the working and asks questions, instead of handing over the answer. It is for students preparing for HKDSE Chemistry and for teachers who need to see how their own groups are doing. The interface, topics and AI replies can be switched between Traditional Chinese and English. English uses Hong Kong DSE chemistry wording and British spelling. Students can: Read an interactive lesson, then try the follow-up calculations Write with Apple Pencil or a finger, or submit a photo from the camera or the photo library Ask for a Socratic hint after a wrong attempt. Spoken feedback is Cantonese in Chinese and English in English Review feedback, past attempts, points, and a learning suggestion based on their own weak spots Teachers can: Create a teaching group and invite students with a join code or a school email See weak topics, common mistakes, and each student’s progress Refresh an AI suggestion for the group or for one student Preview questions and reference answers Topics include reacting masses, concentration, pH, volumetric analysis, standard enthalpy changes, Hess's law, rate of reaction, molar volume of gases, equilibrium constant, shifts in equilibrium, organic synthesis calculations, rate equation, activation energy, atom economy, separation and purification, quantitative analysis, instrumental analysis, and analytical chemistry applications. Sign in with an authorised school email. Points are awarded only the first time an exercise is answered correctly.

LearnSys DSE Study Captain is built for Hong Kong Diploma of Secondary Education students. It keeps what matters - when each paper starts, what to do today, and how the week is going - in one calm, focused app. PAPER-LEVEL COUNTDOWNS Choose your DSE cohort, electives and Mathematics modules to see the nearest paper and a complete exam timeline. A widget keeps the countdown and today's tasks visible. TODAY'S TASKS The offline planner uses your available time, focus topics and exam dates to suggest useful sessions for today. Tick a session once and Today, Plan, Progress and the widget update together. ONE CLEAR WEEK AT A TIME Generate a 2, 4 or 8-week plan. Each week expands independently, so the screen never becomes a wall of checkboxes. Weekdays and weekends begin at sensible times, with breaks included. EXAM TIMELINE Core papers, selected electives and M1 / M2 appear in date order. Tentative dates are labelled clearly. HONEST PROGRESS Compare time completed this week with the target created from your own weekday and weekend availability. See actual subject time and current focus areas. CAPTAIN PRO Unlock 8-week plans and longer plan history with a one-time purchase. Restore purchases from Settings at any time. PRIVATE BY DESIGN No account, advertising, analytics, AI chat or network API. Your subjects, plans and progress stay on your device. Languages: Traditional Chinese, English and Simplified Chinese. Provided by LearnSys.org. Always confirm examination dates against the latest HKEAA timetable.