AskSia for Critical Thinking2000+ universities

Critical Thinking AI: Arguments
that survive scrutiny.

AskSia walks logical fallacies, runs argument mapping, and handles formal and informal logic. Built for critical thinking courses, intro philosophy, LSAT prep, and analytical writing. Web, mobile, LMS extension, desktop.

+0.6 GPA in one term
average among weekly active users - 92% report better grades within 30 days
4.9 / 5 - 2M+ college students - 2000+ universities worldwide
Hi there - what are we studying today?
Sia is ready - 2M+ college students online
Or jump straight to
Quick Answer

Can AI help with Critical Thinking?

AskSia is the Critical Thinking AI for university students taking critical thinking. Members report an average +0.6 GPA increase in one term. AskSia handles critical thinking lecture transcription, multi-document Q&A across Critical Thinking, Logic, Argument Analysis, LSAT Prep, GRE Analytical Writing Prep, a 98%-accurate critical thinking homework solver with worked diagrams, study guides built on the AskSia-Method, visual concept maps, FSRS flashcards calibrated for critical thinking, adaptive Mock Exam quizzes, an AI essay writer with citations, and an AI-text detector. Surfaced across web, mobile (iOS/Android), browser extension (Canvas, Blackboard, Brightspace, Moodle, Everytime), and a native desktop agent for Mac and Windows. Used at 2000+ universities globally. Free for college students.

+0.6
avg GPA lift in one term
2M+
college students worldwide
2000+
universities covered
4x
surfaces - everywhere you study
Real outcomes

It's not the conclusion. It's
the argument structure.

Critical thinking students lose points for unargued conclusions, fallacies they didn't catch, or argument structures that weren't mapped clearly. AskSia tightens those.

2.9->3.6+0.7

AskSia walked through fallacy detection on dense readings with citations to argument structure. My critical thinking essays sharpened noticeably within the first month.

Joseph · Philosophy
Princeton · Class of 2026
3.2->3.8+0.6

For LSAT logical reasoning I drilled assumption questions with AskSia. Score climbed 8 points in three weeks of targeted practice with the missed pattern types.

Catherine · PPE
Oxford · Class of 2027
3.0->3.7+0.7

The GRE analytical writing helper outlined my issue essay with structure cited to ETS rubric criteria. Hit a 5.5 on the practice section.

Rafael · Philosophy
Sorbonne · Class of 2026
Why AskSia

Lecture, library, exam prep, late-night essay.

Phone for a quick fallacy check. Laptop on the argumentative essay. Extension pulling your critical thinking syllabus. Desktop agent over your LSAT prep at midnight. One CT library, four surfaces.

Web App

Where arguments meet rigor

Drag your CT textbook, primary philosophy texts, your essay drafts, and your professor's slides in. AskSia walks logical fallacies, runs argument mapping with proper formal structure.

Multi-doc Q&A across critical thinking readings with page-level citations
Convert any critical thinking source to Note, Map, Cards, Quiz
Real-time collaboration on shared critical thinking maps
Mobile App

CT review on the bus

iOS and Android. Photograph an argument, a passage with reasoning, or your handwritten argument map. AskSia returns the analysis with structure and fallacies identified.

Snap-and-solve any critical thinking problem
Live critical thinking lecture record, transcribe, translate
Daily critical thinking spaced-repetition review queue
Browser Extension

CT course materials, synced

The Chrome extension adds a Sync button on Canvas, Blackboard, Brightspace, Moodle. Your CT syllabus, philosophy readings, LSAT prep pull into one library.

Works with all 5 major university LMSs
Read-only, never writes to your LMS
Critical Thinking module structure preserved, folders auto-built
Desktop Study Agent

Cmd+Space over your draft or your CT textbook

Native macOS and Windows. AskSia summons over your essay, your CT PDF, LSAT prep materials. Reads your selection and offers logical analysis.

Global hotkey while studying critical thinking
Reads your critical thinking selection, screenshot, clipboard
Works offline after first launch
Everything in one place

12 study tools built
for critical thinking.

Stop juggling Symbolab for logic, ChatGPT for fallacies (that confuses ad hominem with tu quoque), Grammarly for grammar, and your TA's office hours. AskSia is one workspace.

CT lecture transcription

Record your critical thinking lecture. 40+ languages, sub-100ms latency, logical terminology preserved.

Open

CT multi-source Q&A

Drop your CT textbook, primary philosophy, your essays, and 80 papers. Ask 'why does this argument commit affirming the consequent' and AskSia answers with logical analysis.

Open

Fallacy walker

Identifies formal and informal fallacies (ad hominem, straw man, false dichotomy, slippery slope, etc.) with proper explanations and contrast cases.

Open

YouTube to CT notes

Paste any Crash Course Philosophy, PhilosophyTube, or LSAT prep URL. AskSia transcribes, chapterizes, pulls the worked examples into a clean note.

Open

CT Mock Exam mode

Adaptive practice for critical thinking courses, LSAT Logic Games and Logical Reasoning, and GRE analytical writing. Auto-graded with rationale.

Open

Sia Note for CT chapters

Turns a CT textbook chapter on formal logic into one note: principle, key fallacy, worked example, exam-style problem.

Open

Argumentative essay writer in your voice

Drafts argumentative essays in your real voice with proper argument structure. Engages objections, defends conclusions.

Open

CT flashcards · FSRS

Auto-built decks: fallacies, argument types, logical connectives, key concepts. FSRS spacing tuned to your exam.

Open

CT concept map

The whole curriculum as a navigable tree from formal logic through informal fallacies. Each concept linked back to your textbook.

Open

AI tutor for critical thinking

Voice-first or text. Walk through a fallacy three different ways, drill argument structure, or explain why valid arguments aren't always sound.

Open
AskSia Library

Trained on real coursework at
the world's top universities.

Browse by university, subject, or course. Every entry maps to curated study patterns for that program.

Harvard UniversityCambridge, MA
Stanford UniversityStanford, CA
MITCambridge, MA
UC BerkeleyBerkeley, CA
OxfordOxford, UK
CambridgeCambridge, UK
ImperialLondon, UK
UCLLondon, UK
TsinghuaBeijing, China
PekingBeijing, China
NUSSingapore
University of TokyoTokyo, Japan
ETH ZurichZurich, Switzerland
EPFLLausanne, Switzerland
MelbourneMelbourne, Australia
TorontoToronto, Canada
Showing 16 of 2000+ universitiesBrowse all universities
Computer ScienceAlgorithms, data structures, systems, AI120+ course bibles
Pre-medBiology, chemistry, anatomy, physiology95+ course bibles
BusinessAccounting, finance, strategy, marketing80+ course bibles
EconomicsMicro, macro, econometrics, game theory70+ course bibles
EngineeringCircuits, thermodynamics, mechanics90+ course bibles
PsychologyCognition, social, stats, neuroscience60+ course bibles
MathCalculus, linear algebra, probability110+ course bibles
HumanitiesLiterature, history, philosophy, writing75+ course bibles
CS50Introduction to Computer ScienceHarvard
6.006Introduction to AlgorithmsMIT
CS106Programming MethodologyStanford
ECON 101Principles of EconomicsMulti-university
BIO 101Introductory BiologyMulti-university
CHEM 1AGeneral ChemistryUC Berkeley
MATH 1ACalculus IMulti-university
PSYC 100Introduction to PsychologyMulti-university
FIN 101Corporate FinanceWharton
STAT 110ProbabilityHarvard
PHYS 8APhysics for ScientistsUC Berkeley
WRIT 101Academic WritingMulti-university
Showing 12 of 500+ popular courses
Compare

AskSia vs. ChatGPT, Quizlet,
Khan, Course Hero.

Other tools solve one slice of college. AskSia is the integrated workspace built specifically for your GPA.

FeatureAskSiaChatGPTQuizletCourse Hero / Khan
Built specifically for college courseworkYes - 2000+ universitiesGeneral-purposeUser decks onlyCrowd uploads / K-12
Lecture transcribe + translateYes - Real-time, 40+ languagesNoNoNo
98%-accurate homework solver with diagramsYes - Step-by-step + visual~70-85%, hallucinatesNoManual hints
Multi-document Q&AYes - 100 files, page-cited answers~10-20 filesNoNo
FSRS spaced-repetition flashcardsYes - Auto-built, 6 typesNoManualNo
Adaptive Mock ExamYes - Auto-graded FRQNoNoSAT only
Browser extension for LMS pagesYes - Canvas, Blackboard, MoodleNoNoNo
Native desktop agentYes - Global hotkeyWeb wrapperNoNo
iOS & Android mobile appsYes - Snap-and-solveYesYesYes
Reported GPA improvementYes - +0.6 avg in one termNot measuredNot measuredNot measured
Free for college studentsYes - No card requiredLimitedLimitedPaid unlocks
FAQ

Frequently asked
questions.

Can AskSia identify logical fallacies?
Yes. AskSia identifies formal and informal fallacies (ad hominem, straw man, false dichotomy, slippery slope) with proper explanations.
Does AskSia handle argument mapping?
Yes. AskSia maps arguments with premises, inferences, and conclusions clearly delineated.
Will AskSia help with LSAT prep?
Yes. AskSia drills LSAT Logical Reasoning, Logic Games, and Reading Comprehension in actual format.
Can AskSia handle formal logic?
Yes. AskSia walks propositional logic, predicate logic, and proof techniques with proper notation.
Is AskSia free for critical thinking students?
Yes, AskSia is free for critical thinking students to start, no credit card required. Free includes daily generation across all tools, unlimited library access, and the browser extension. AskSia Pro and Super unlock unlimited generation, full Mock Exam mode, free-response auto-grading at scale, priority models, and unlimited transcription minutes.
Which platforms does AskSia run on?
Four surfaces, all syncing in real time: (1) Web app at asksia.ai, (2) iOS and Android mobile apps, (3) Browser extension for Chrome, Edge, Brave, and other Chromium browsers, which adds Sync to AskSia on Canvas, Blackboard, Brightspace, Moodle, and Everytime, (4) Native desktop agent for macOS and Windows.
Does AskSia handle Bayesian reasoning?
Yes. AskSia walks Bayesian updating, base rates, and probabilistic thinking in critical thinking contexts.
Can AskSia help with GRE analytical writing?
Yes. AskSia drafts GRE Issue and Argument essays with proper argument structure.
Is AskSia OK for critical thinking coursework?
Yes. AskSia walks reasoning step by step. The AI detector verifies essays read as your own work.
Start Today

Premises. Inference. Conclusion. Defended.

Join the critical thinking students at top colleges and 1500+ programs with AskSia. Free to start.

Download AskSia App