The whole learning stack
Everything you need to ace it.
If Duolingo had a baby with Coursera and Wikipedia, that would be us. Clone any course and make it your own, then master it with active recall, spaced repetition, and an AI tutor grounded in your real material.
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Exams
Made to help you ace the exam.
Start with a complete, free study guide mapped to your exam's official syllabus — then drill it with diagnostics, adaptive practice tests, and quizzes built around the exact domains you'll be tested on.
Browse free exam guidesFree study guides, mapped to the blueprint
Complete, structured guides for hundreds of exams — NCLEX, Praxis, Security+, PMP and more — free, and aligned to each exam's official syllabus.
Diagnostic tests
A diagnostic scores your readiness and pinpoints exactly which domains to drill first.
Adaptive practice exams
Full-length practice tests adapt to your weak spots and build the confidence to pass on test day.
Quizzes & guided assessments
Free-form active-recall quizzes and guided assessments on the exact topics you'll be tested on.
Courses
Start from a course. Make it yours.
A course is an ordered collection of sources, organized into sections. Start by cloning one that already exists — an official Only Ever exam guide, or a course a peer has published — then make it yours: add your own content, edit and reorder sections, repurpose it however you like. Or build a new one from scratch. Not prepping for an exam? Build a course for a language, a new skill, or your own syllabus the same way.
Clone any published course
Start from an official Only Ever exam guide or a course a peer has published, and copy it into your library in a tap.
Edit and make it yours
Add, remove, and reorder sections, swap in your own sources, and repurpose any course until it fits how you study.
Or build from scratch
Start an empty course and assemble it yourself, section by section, from the sources you bring.
Learn anything, not just exams
Languages, new skills, your own reading list — build a course for whatever you want to master.
Sources
Every source, built for deep reading.
Bring PDFs, markdown, and videos — each gets a reading experience designed for learning, not just storage. Read with context, follow links between ideas, and break long videos into pieces you can actually study.
PDFs, deeply readable
Open any PDF in a clean reader built for study — not a cramped preview you have to fight.
Markdown with wiki-style links
Markdown sources read like Wikipedia: internal links connect related ideas, so you follow a thread instead of scrolling walls of text.
Long videos, auto-clipped
Big videos are split into bite-size clips, so you study and test clip by clip instead of slogging through hours.
Any source, one experience
Whatever you bring becomes a structured source you can read, link through, and quiz.
AI
AI that actually goes deep.
Most apps bolt on a chatbot. Only Ever runs a deep, multi-stage pipeline that drafts, checks, and refines high-quality questions tuned to the type of source and the exam you're preparing for — then helps you when you're stuck and grades you like a real examiner.
Multi-stage question generation
Not a one-shot prompt — a deep pipeline drafts, checks, and refines every question, so what you get is high-quality and specific to your source and exam.
AI-proctored assessments
Guided assessments where you write free-form answers and the AI grades them instantly — like a tutor marking your work in real time.
An AI tutor that knows your sources
Stuck on a concept? The tutor explains it in plain language, grounded in your real material — not the open internet.
Tuned to what you're studying
Questions adapt to the source type and the exam, so you drill what actually shows up on test day.
Trust
Answers you can trace to the source.
No black boxes. Every question and explanation is anchored in your real material, so you always know where the answer comes from — and can dig in when you're stuck.
Source-tethered questions
Every question links to the exact passage it came from — so you can always check the receipts.
Tap to read the source
Jump from any question straight to the original passage and read it in context.
No hallucinated facts
Questions and explanations are anchored in your real sources — nothing invented, nothing to second-guess.
Master
Built to make it stick.
Active recall and spaced repetition are the research-backed way to move knowledge into long-term memory. Only Ever runs the whole loop for you.
Spaced repetition
An FSRS-powered schedule resurfaces each concept right before you'd forget it.
Active-recall quizzes
Retrieving answers — not rereading — is what actually builds durable memory.
Bloom's-level progression
Questions climb Bloom's six levels — from recalling facts to applying and analyzing them.
Streaks that stick
Daily streaks keep the habit going — just 15 minutes a day is enough.
Works offline
Study anywhere. Your reviews sync automatically when you're back online.
Organize & share
Your library. Your community.
Keep everything tidy as your collection grows — then become a creator. Free to create, share, and explore; upgrade only when you want AI superpowers.
A library with folders
Organize every course and source into folders that match how you study.
Publish & share
Share your courses with peers — or keep them private. Creating and sharing is always free.
Discover what others made
Search published courses and sources from the community and add them in a tap.
Light & dark
Study in light or dark.
Only Ever ships a warm light theme — the same palette you see here — and a cool, low-glare dark theme for late-night sessions. Pick whichever's easy on your eyes.
A warm light theme
The same warm, editorial palette as this site — easy to read in daylight.
A cool dark theme
A calm, low-glare dark mode that's gentle on the eyes for night sessions.
Beautiful either way
Every screen, course, and quiz is designed to look great in both themes.
FAQ