How it works
From blank page to practice test in three steps.
Sign in with Google
One tap. Your packs, scores and chats sync to your account.
Add your AI key
Paste a Claude, ChatGPT or Grok key. We check it instantly so you know it works before you start.
Topic or document
Type a topic, or upload a PDF/DOCX. We read up to 20 pages and build your packs.
Study modes
Six ways to learn it. One upload.
Timed. Sectioned. Scored.
Generate 150 questions and get a pack of three 50-question sections. Each section's timer is set from how long its questions take to read.
Flip, recall, repeat.
A smooth 3D flip — question on the front, answer on the back.
Type the missing word.
The powerhouse of the cell is the mitochond.
What you must know.
- 01Cells are the basic unit of life
- 02ATP stores and moves energy
- 03Membranes control what enters
Download Q&A as PDF.
Questions and answers, formatted for print or study on the train.
Results that teach
See every answer — and why.
At the end of each test you get your score, the right answer for every question, and a short explanation. Retake only the questions you missed.
- Answers revealed after you submit
- Progress saved across sections
- Works on phone, tablet and desktop
100% free
Free for every student.
No plans, no paywalls. Connect your own AI key and use every study mode.
- All six study modes
- Unlimited packs
- Offline downloads
Questions, answered.
Claude (Anthropic), ChatGPT (OpenAI) or Grok (xAI). Paste one API key in settings; we verify it right away.