Quick Start
Get the app, pick a topic, and run your first session in under 5 minutes. Read the guide →
Welcome to Teachback
Teachback is an AI-powered learning app built on the Feynman Technique — one of the most effective study methods ever documented.
The idea is simple: if you can’t explain something simply, you don’t understand it yet.
Teachback makes you explain your topic aloud, then uses AI to ask probing questions about anything you glossed over.
Quick links
Section titled “Quick links”BYOK — Bring Your Own Key
Use your own OpenAI, Anthropic, or Gemini API key to bypass the cloud quota entirely. Learn more →
Run AI Locally with Ollama
100% offline sessions using Ollama and any open-source model on your Mac or PC. Setup guide →
Cloud Tiers
Compare Free, Standard, Pro, and Ultimate cloud AI tiers. View tiers →
How it works
Section titled “How it works”- Declare a topic — type or paste the concept you want to learn.
- Teach it aloud — speak freely; on-device Whisper AI transcribes in real time.
- Answer AI follow-ups — targeted questions reveal exactly where your understanding breaks down.
- Review your report — a four-dimension mastery score shows what to work on next.
- Come back — spaced-repetition scheduling surfaces weak concepts at optimal intervals.
Privacy
Section titled “Privacy”All speech-to-text transcription runs on-device using Apple CoreML-accelerated Whisper.
Your audio recordings are never sent to any server.
Session data is stored in a local SQLite database on your device.
Cloud AI is opt-in — you can use Ollama for fully offline sessions.