Learn AI like the field actually moves.

Neuron is an AI learning app with 89 lessons across 8 tracks: Fundamentals, Prompt Engineering, LLMs Deep Dive, Build with AI, Agentic AI, AI Video & Media, AI Integrations, and AI Safety & Ethics. It's built around spaced repetition, real Claude AI tutoring, ElevenLabs voice narration, and AI-graded capstone projects with cryptographically signed certificates.

The Free tier gives you 18 foundational lessons — all 9 of AI Fundamentals, the first 3 Prompt Engineering lessons, the 3 LLM foundation lessons (tokens, tokenizers, context windows), and all 3 AI Safety & Ethics lessons. You can bring your own ElevenLabs and Anthropic keys to power the tutor and narration. Pro at $19/month unlocks all 89 lessons including the advanced tracks (Agentic AI, MCP, Building Production AI, Video & Media, Integrations) and the full per-model deep dive across Claude, GPT, Gemini, Llama, Mistral, and Grok — plus we cover the tutor and voice costs. Team at $49/user/month adds the teacher dashboard. No predatory billing, ever.

Neuron is the only mainstream AI learning app with built-in spaced repetition (Anki SM-2 algorithm), AI-graded real-world capstone projects, cryptographically signed certificates with public verification, and a Mistakes Bank for resurfacing wrong answers. Competitors typically lack 3-4 of these features simultaneously. See the comparison table above.

After you complete a lesson, Neuron auto-schedules review intervals at 1, 3, 7, 14, 30, 60, and 120 days. If you remember correctly, the interval grows. If you miss, it resets to 1 day. This is the SM-2 algorithm — the same proven approach Anki uses to power 89% retention rates versus the 12.6% median completion rate of online courses.

Yes. Every certificate is signed with ECDSA P-256 cryptographic signatures. Each one has a unique ID. Anyone can verify a certificate by visiting neuron-660565787120.us-central1.run.app/?verify=NEUR-CERT-XXXXXX without an account. Certificates are also LinkedIn-shareable with prefilled certification metadata that adds them directly to your profile.

Real Claude 4.7 with streaming responses. The tutor is context-aware about your name, level, streak, completed lessons, and recent activity. It also goes proactive — when you miss 2+ questions in a row, Neo offers to explain the concept differently, with the failing question pre-loaded into the chat.

Always current. As of May 2026, the lessons cover Sora 2, Veo 3, Claude 4.7, GPT-5, Gemini 2.5, Llama 4, Mistral, Grok 4, MCP (Model Context Protocol), and every major frontier release. We update lessons as the field moves, not on a textbook publication schedule.

Yes. Neuron is mobile-first PWA with full Android Play Store support via TWA wrapping (Trusted Web Activity). Install it from your browser's "Add to Home Screen" prompt or grab the Android build. iOS PWA install works the same way via Safari's "Add to Home Screen."

Yes for lessons — the service worker pre-caches the full app shell + all 89 lessons so you can study on a plane. Audio narration requires ElevenLabs API access (or falls back to your device's built-in voice). The AI tutor requires internet since it streams from Claude live.

A real-world project at the end of each track. Examples: write a production-grade system prompt for a banking bot (Prompting), pipeline a 90-second video using multi-tool stacking (Media), red-team your own AI feature for 5 distinct failure modes (Ethics). You submit 150-500 words. Claude grades against a rubric and returns a score plus specific improvement feedback.

A safety net for your streak. Earn one freeze per week if you maintain a 5+ day streak (cap of 3 stored). If you miss a day and have a freeze available, your streak preserves automatically. This is the single biggest churn-reducer in learning apps — Duolingo data shows it cuts dropout by ~28%.

No. Neuron uses Firebase anonymous authentication by default — no email, no password, no credit card required to start. Your progress saves locally and optionally syncs to the cloud if you enable Cloud Sync. Sign-in is only required for cross-device sync and cohort features.

Yes. Create a cohort, get an EDU-XXXXX join code, share it with students. The Teacher Dashboard shows live progress per student, top performers, at-risk learners (no activity 7+ days), and exports to CSV for your gradebook or LMS. Team tier includes SCORM/xAPI export hooks for Canvas, Moodle, and Blackboard.

The Mistakes Bank captures every wrong answer (capped at 100). The "Mistakes Crusher" session pulls your 8 hardest questions and runs a focused review — no heart penalty, full XP. Crushed mistakes leave your record. This is targeted weakness work that competitors don't offer.

By design. Neuron deploys directly to Google Cloud Run via `gcloud run deploy --source .` with one command. No GitHub repo, no CI pipeline, no Actions runner. Just `setup.ps1` (Windows) or `setup.sh` (Mac/Linux) and you're live in under 10 minutes including Firebase setup.

No. Cancellation just downgrades you back to Free (BYO-key). Your certificates remain valid forever — they're cryptographically signed, so they don't depend on your subscription status. Your progress, badges, and league rank are all preserved.

Yes. API keys you enter (ElevenLabs, Anthropic) live only in your browser's localStorage and are sent exclusively to those provider APIs. Progress data lives locally by default. Cloud Sync (if enabled) stores anonymous progress in Firebase under a randomly generated user ID — no email, no PII. Read the full privacy policy at /privacy.html.

PNG at 2828×2000 (2x A4 landscape, retina quality). Built with native SVG-to-canvas rendering — works in any browser, no third-party tools. Print to PDF from your browser if you need PDF specifically. LinkedIn shares the cert image directly.

Every user gets a unique NEUR-XXXXXX friend code. Share it with someone, they paste it in their Friends tab, and you both see each other in the activity feed and weekly league. Cross-device social works automatically when both users have Cloud Sync enabled with the same Firebase project.

Yes. The entire codebase is in this repository. The deployment script (setup.ps1 or setup.sh) provisions a Google Cloud project, sets up Firebase, deploys Cloud Run, and connects your domain. Total cost to run for 1,000 weekly users: roughly $0-5/month using GCP free tiers. The full deploy guide is in DEPLOY.md.