Java
College computer science — and the place to start if you're teaching yourself to code. Vocabulary, program anatomy, primitive types, and code you trace by hand. No enrollment required.
The material a course would give you — open to anyone. Practice for the class you're taking now, the skill you're teaching yourself, or the certification that comes after. Original questions with instant explanations, timed exams, and review that brings back what you keep missing. Live now: Java, Calculus, Discrete Math, CompTIA Security+, and NCLEX-RN.
Practice to pass — free, for everyone.
No catch. Practice testing should cost nothing — so there are no ads, no locked answers, and no email harvesting. The whole library works offline, and your study data never leaves your device.
One engine for your whole semester — or the syllabus you set for yourself. Course subjects come first: Java, Calculus and Discrete Math are live now, with more of the sequence landing as the courses move. The same engine also drives certification prep, tuned to each exam's real domains, weighting, and format.
College computer science — and the place to start if you're teaching yourself to code. Vocabulary, program anatomy, primitive types, and code you trace by hand. No enrollment required.
Functions, trigonometry, and analytic geometry now — limits and derivatives in progress.
Logic, quantifiers, proof methods, and induction — the course where the reasoning is what gets graded.
SY0-701 · all five domains, PBQ-style scenarios, full-length timed exams.
Next Generation (NGN) nursing licensure — client-needs-weighted practice with rationales.
The rest of the CS and math sequence, added topic by topic as the courses move.
Network+, A+, and CySA+ — the natural next steps after Security+.
Learn it, test it, then drill exactly what you keep missing.
Answer, then instantly see the correct choice, a full explanation, and why every wrong option is wrong. Untimed and built for learning.
Timed, with a question navigator and mark-for-review, then a scored breakdown. Build real test-day stamina before it counts.
Re-quiz only what you flagged or missed. Spaced repetition brings the tough ones back sooner.
A readiness gauge, per-topic mastery, and score trends show exactly where to focus next.
Every question is tagged to a course topic or an official exam domain, and drawn in the same proportions you'll actually face.
Install it and study anywhere — no signal required. The app has no ads and no account. Your progress stays on your device.
Active practice, deliberate spacing, and focused review — presented as useful habits, not unexplained statistics.
"Practice testing is one of the best-studied ways to make material stick. That's the whole product."
Answer first. Then use the explanation to strengthen what you can recall.
Practice testing · source-backedRevisit missed and flagged items when they are most useful to practice again.
Spacing effect · source-backedWork offline and keep your study progress on your device, without an account.
Local-first study · product policyEvery subject ships with free written guides — the concept, the method, the mistake everyone makes — linked straight to the practice questions that test it. Study the guide, drill the questions, review what you missed. That's the whole loop.
Browse the study guide libraryQuestions, answers, and explanations are generated with AI and checked before release — against the current published objectives for certifications, and against standard course topics for academic subjects. They're original study material, not real exam questions. Found an error? A one-tap "Report question" helps us fix it.
Course practice here is written from scratch and isn't tied to any school, instructor, syllabus, or assignment — nothing you see is a homework answer, and it isn't meant to be turned in. Kestrel Exams is also independent: not affiliated with, authorized, endorsed by, or sponsored by CompTIA, any licensing body, or any institution. No ads; our privacy policy explains the limited analytics used across Kestrel pages.
Yes. Kestrel Exams launches completely free with no ads and no account. A premium option may come later, but the practice you need to pass is free.
Yes — once installed, Kestrel Exams runs fully offline. Study on a plane, on the train, anywhere.
No. All questions are original, AI-generated and reviewed to match the style and difficulty of the exam or course topic. Sharing or reproducing real exam questions violates exam rules, and we don't do it. Course practice is written from scratch too — it is not taken from any school, textbook, or instructor.
Kestrel does not require an account, and study progress stays on your device. Kestrel pages, including app pages, use Google Analytics for aggregate usage measurement; it does not receive your answers, flags, or study history. See our privacy policy for details and controls.
Java, Calculus and Discrete Math are live for coursework, along with CompTIA Security+ (SY0-701) and NCLEX-RN. More of the CS and math sequence, plus more CompTIA exams (Network+, A+, CySA+), are on the roadmap — see the library.
Yes — as practice. Kestrel is topic-based study material, so you pick the topics your class is on and drill them. It isn't linked to any school or syllabus, it doesn't contain your assignments, and it's not something to submit for a grade. Check your own course's policy on study tools if you're unsure.
No. The subjects are organized like college courses because that's the clearest way to learn them, but nothing checks how you found the material. If you're teaching yourself — Java is the most common place to start — pick your topics and practice. It's free either way.
Java, Calculus, Discrete Math, Security+, and NCLEX-RN — free, offline, and open right in your browser. No sign-up.
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