testbudyAI-powered study assistant
Expert explanations
for every subject
you study.
Testbudy's AI reads your screen and delivers clear, instant explanations — by voice or on-screen overlay. Like having an expert tutor available 24/7.
- Works with any textbook, slide, or study guide
- Claude Sonnet & GPT-4o powered
- Voice or on-screen text overlay
Free to start · No credit card · Works in your browser
Trusted integrations
Millions of study sets, one search away
Browse community-created sets or publish your own. Every set is powered by AI.
How it works
Up and running
in seconds.
Four steps to understanding any concept, any time.
Open Your Study Material
Launch Testbudy alongside any textbook, lecture slide, practice exam, or study guide. Works with any on-screen content.
AI Reads & Understands
Multiple AI engines — including Claude Sonnet and GPT-4o — analyse your content in real time and formulate a clear, accurate explanation.
Get an Instant Explanation
Receive a clear breakdown delivered through your earphones via natural text-to-speech, or as a subtle on-screen overlay — hands-free, distraction-free.
Review & Go Deeper
Pause, replay, or ask follow-up questions on any concept. Study at your own pace, building real understanding — not just surface answers.
Features
Everything you need
to study at your best.
Built for students who want to genuinely understand their material — faster.
Instant AI explanations
Ask Testbudy to explain any concept on your screen — from calculus to case studies. Get clear, structured breakdowns in seconds, not minutes.
Hands-free voice learning
Hear explanations read aloud while your hands stay on your keyboard. Natural text-to-speech lets you absorb material without breaking your study flow.
Four AI engines
Switch between Claude Haiku, Claude Sonnet, GPT-4o mini, and GPT-4o. Use the fastest model for quick lookups, the smartest for complex problems.
Works anywhere, any device
Fully browser-based — no installs, no updates. Open your dashboard on any laptop, tablet, or phone and your study sets, flashcards, and progress are all right there.
Private by design
Zero study sessions stored. Zero data sold. Every AI request is encrypted in transit and deleted immediately. Your study habits stay yours.
Study group access
Elite plan holders can share access with up to 5 study group members. Pool your plan so the whole group learns together — for less per person.
Student stories
Real results from real students.
“I was failing organic chemistry. After two weeks using Testbudy to get instant explanations while reviewing lecture recordings, I passed my midterm with a B+. It's like having a patient tutor who never gets tired.”
Marcus T.
Pre-med, Year 2
“I study in three languages and explaining concepts to myself out loud is how I learn best. Testbudy's voice feature does this for me — it reads back explanations in plain language while I take notes. Game-changer for language learners.”
Yuki S.
MBA Student
“Bar prep is brutal. I use Testbudy to quickly decode dense legal passages I don't understand. It saves me 20–30 minutes every study session. That adds up to hours per week at a critical time.”
Priya L.
Law Student, Year 3
Joined by 2,400+ students across 30+ countries
Pricing
Simple, transparent pricing
Download free. Subscribe to unlock the full power of Testbudy.
Free
Try it out — no credit card needed.
- 25 tokens/month
- Claude Haiku (1 token/use)
- GPT-4o mini (2 tokens/use)
- Screen capture analysis
- macOS, Windows & Linux app
- Claude Sonnet (3 tokens/use)
- GPT-4o (5 tokens/use)
- Voice answers
Basic
For casual students who want AI-powered answers.
- 500 tokens/month
- All AI models incl. Claude Sonnet
- GPT-4o (5 tokens/use)
- Screen capture + AI chat
- macOS, Windows & Linux app
- Voice answers
- Priority support
Pro
For serious students who need every edge.
- 1,500 tokens/month
- All AI models incl. Claude Sonnet
- GPT-4o (5 tokens/use)
- Screen capture + AI chat
- macOS, Windows & Linux app
- Voice answers
- Priority support
Elite
For power users and study groups.
- 4,000 tokens/month
- All AI models incl. Claude Sonnet
- GPT-4o (5 tokens/use)
- Screen capture + AI chat
- macOS, Windows & Linux app
- Voice answers
- Priority support
Get started free
Understand more.
Score higher.
Join 2,400+ students who study smarter with AI-powered explanations — available any time, for any subject.