Our Guiding Principles

Strict Source Grounding (RAG Architecture)

AI should assist, never hallucinate. A generic chatbot will comfortably fabricate a biological pathway or invent a non-existent mathematical theorem if prompted carelessly. In higher education, a single hallucination can mean failing an exam question.

At Learnex, every single explanation, flashcard, and quiz question generated by our system is strictly derived from the exact materials you upload using dense vector chunking and Retrieval-Augmented Generation (Lewis et al., 2020). When an uploaded slide lacks sufficient detail to answer a user prompt, Learnex flags the missing context explicitly rather than guessing.

Your Course Data is Sacred — Never Used to Train AI Models

Students trust us with their lecture slides, unpublished lab research, professor notes, and personal academic records. We honor that trust with unbending operational security:

• Zero Training Ingestion: We do not train, fine-tune, or contribute your course notes or uploaded PDFs to any public or foundation AI models.
• Encrypted in Transit & at Rest: All file storage in Cloudflare R2 is secured using TLS 1.3 in transit and AES-256 encryption at rest.
• Complete Data Ownership: You retain 100% ownership of your study material. You can delete individual subjects, trails, or your entire account with immediate cascade deletion across our database.

Learn more in our full Privacy Policy.

Active Recall & Desirable Difficulty over Passive Reading

Rereading textbook chapters and highlighting lecture notes feels comfortable and creates fluency, but empirical cognitive research proves it produces rapid forgetting (Dunlosky et al., 2013). Genuine learning requires desirable difficulty: forcing the brain to retrieve information under effort.

We design every interaction inside Learnex around active retrieval:

• Our Socratic Tutor answers questions with guided prompts rather than raw copy-paste solutions.
• Our Practice Labs require students to find the bug or calculate the missing variable before revealing the correct output.
• Our spaced-repetition schedules schedule reviews right at the threshold of forgetting, solidifying synaptic pathways for long-term retention.

Radical Affordability and Transparent Student Pricing

Many edtech startups exploit college students with bait-and-switch annual commitments, hidden fees, and exorbitant pricing. Learnex is built by a student, for students, and is priced to remain accessible on a modest budget:

• A generous, permanent free tier (The Hiker) offering unlimited quizzes and cards on one active subject without requiring a credit card.
• Flat, honest subscription rates: Explorer ($4.99/mo) and Master ($7.99/mo).
• Automatic 20% Academic Discount: Seamlessly verified for any student holding an active .edu email address.
• No Lock-In: Cancel anytime directly from your settings with zero penalty or complex cancellation retention funnels.