Problem solving
Take a photo, crop it to the question, then read the answer and explanation. Clearly displayed equations make the working easier to follow.
Get solutionswith AI
Take a photo or choose one from your library to get an AI answer and explanation.
Problem solving and history management
History management
Question photos and answers stay in your history. Browse by date, then use search and filters to find the question you need.
Usage and camera settings
Usage resets after one hour
Your free allowance resets one hour after your first request. Check your remaining questions and reset time right in the app.
Silent camera and haptics
Turn on the silent camera when studying in a library or shared space. You can adjust haptic feedback in settings, too.
Frequently asked questions
Can I use a photo I already have?
Yes. Open the add question menu to take a new photo or choose one from your photo library. Crop the question, rotate it if needed, and request an explanation.
How do I find a question I solved before?
Open your saved history to revisit question photos and explanations. Search titles, answer text, or words recognized in the photos, then filter by subject and date. Blurry images or small text may not be fully searchable.
Can I use Chappy for free?
Yes. You can request explanations within the free allowance. It resets one hour after your first request, and the app shows your remaining questions and reset time. Ads may appear while using the app.
Can I take photos in a quiet place?
You can enable the silent camera in settings and adjust haptic feedback separately. Camera behavior may vary depending on your device and operating system.
Which devices and languages are supported?
Chappy is available for iPhone and Android smartphones. Choose from 10 app languages, including English, Korean, and Japanese. Check each store for device and OS compatibility.
Are AI answers always correct?
AI can sometimes make mistakes. Use explanations as a learning aid, and check important details with your textbook or teacher.
Download Chappy
Available for iPhone and Android.