StoichioAI vs Calcable

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.

Before exams, formulas alone aren’t enough — calculator muscle memory matters. Calcable helps you practice DSE-style scientific calculator operations on your phone so you make fewer miskeys under pressure. **What Calcable offers:** • Practice with two common scientific calculator interfaces (fx-50FH II / fx-3650P II style) • Keys, LCD, Replay, and mode switching that feel close to real devices • DSE operation tips, Learning Center, and calculation history for short daily drills • Scientific calculation, PRGM practice, unit conversion, and retro graphing in one app **Why download:** • Switch models instantly from the top-left control • COMP, SD, REG, BASE, CMPLX, and PRGM modes • Trigonometry, logs, exponents, roots, factorials, nPr / nCr • Fractions, complex numbers, statistics, base conversion, and programming • 40 scientific constants and 23 built-in formulas • Ans memory, Multi-replay, and calculation history **Optional purchases:** • Optional Student and Lifetime Master unlocks for advanced tools If you want exam-ready scientific calculator practice or a powerful everyday calculator, Calcable is built for you.