StoichioAI
HKDSE Chemistry Calculations
Free · Designed for iPad. Not verified for macOS.
Handwrite chemistry calculations. AI guides you with questions, not answers. HKDSE stoichiometry, titration, enthalpy, equilibrium and rates. Chinese and English.
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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
- Switch between Traditional Chinese and English inside the app, using HKDSE chemistry wording
- AI marking, hints, learning suggestions and speech follow the selected language
- Teaching notes and follow-up exercises for 18 chemistry calculation topics
The developer, Pang Ka Wai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Pang Ka Wai
- Size
- 28.4 MB
- Category
- Education
- Compatibility
Requires iOS 17.1 or later.
- iPhone
Requires iOS 17.1 or later. - iPad
Requires iPadOS 17.1 or later. - Mac
Requires macOS 14.1 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 SciEduHub
