AI math tutor for K–12 schools and districts using guided questioning to help students solve problems
Free AI character chat and roleplay with no sign-up
Stage
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Founded
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Based in
US
SG
Pricing model
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Pricing
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Free: Hojicha unlimited, 3 Matcha replies a day in most countries, free and unlimited direct messages with any character, short ads. Teasa Basic: $9.90 per month, no ads, 1,000 Matcha replies a week. Teasa Pass: $14.99 per month at beta price (or $4.99 per week), Matcha and Earl Grey unlimited, web
Key features
Guided questioning feedback that builds thinking instead of revealing answers
Handwritten work recognition and assessment
Support for geometry drawings, tables and graphs
Real-time data on student progress and learning gaps
Content aligned with state standards and curriculum
Three difficulty levels for differentiated learning
Support for 200+ languages
Adaptive practice personalized to student skill level
Multiple assignment types including entry, exit and formative assessments
Spiral review of previously learned topics
Play interactive stories with multiple AI characters in a cast
Direct message any AI character one-on-one
Relationship milestones track connection progress with characters
Creator-written quests earn up to 50 gold per story
Four chat styles: Hojicha, Matcha, Earl Grey and Oolong
Character voices with 2-4 hours monthly on paid plans
Create your own AI characters and stories in Creator Studio
Import Character.AI chats and characters
Web lookup for characters to search and share sources
Play 4,137 stories in English across 9 languages
What makes it different
AI tutoring that uses hints to build thinking rather than revealing answers
Assesses step-by-step work including handwritten submissions, not just final answers
Trusted by 3000+ schools and districts
Real-time actionable data for teachers to differentiate and target support
No sign-up required to start playing
Completely free with unlimited direct messages
Characters remember you and grow closer through relationship milestones
Interactive stories with player agency and multiple characters
Smartschool
Teasa