Comparison

AskSia vs StudyOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AskSia

This AI-powered study tool helps students upload readings, transcribe lectures, ask questions, and organize notes. It offers a free tier with limited features and multiple premium subscription plans for enhanced capabilities and unlimited processing.

Highlights
  • Upload readings and documents
  • Transcribe lecture audio
  • Ask AI questions about content
  • Organize notes
  • Unlimited AI assistance (premium)
  • Document processing (premium)
Features
Read full description

AskSia is your AI tutor and AI study assistant. Upload lecture recordings, PDFs, slides, photos and class notes, and Sia turns them into notes, flashcards, practice tests and a study plan from your own courses. Trusted by 2M+ students at 2,000+ universities. RECORD, TRANSCRIBE AND TRANSLATE YOUR LECTURE LIVE Fast professor? Heavy accent? Tap record and read every word as it is spoken, whether the lecture is in English, Korean, Japanese, Cantonese, Mandarin or Spanish, translated into your language in real time. Recording continues when your phone is locked, a floating window keeps the transcript in view, and you can ask Sia questions mid-lecture. When the lecture ends you get a summary and an outline. Built for lectures and coursework, not meetings. 30+ languages supported. ASK SIA ANYTHING ABOUT YOUR FILES OR AUDIO Upload up to 20 files at once: PDFs, Word documents, PowerPoint decks, Excel sheets, textbook chapters, audio files, YouTube links or photos. Ask a question and get an answer with citations that point to the exact page. Long readings become summaries with key points in your professor’s terms. LECTURE IN, NOTES OUT Any recording or file can become structured notes, a study guide, flashcards or a quiz, with spaced repetition built in so the cards you miss come back until you know them. Use the flashcard maker and quiz maker on one slide deck or a whole semester. PRACTICE BEFORE IT COUNTS Build timed practice tests and mock exams from your own course material, not from random question banks, with every miss explained. Use them for midterms, finals, college entrance and grad school exams. Preparing for a standardized test? Upload your prep materials and Sia turns them into practice sets and flashcards too. SIA SHOWS THE STEPS, NOT JUST THE ANSWER Snap a photo of a problem in math, physics, chemistry, biology, statistics, coding or engineering, or type it or say it out loud. Your AI tutor works through it step by step and explains the reasoning, not just the result. Ask why, ask again, or ask in your own language. KNOW WHAT TO REVIEW BEFORE THE EXAM Sia tracks what you get wrong across notes, flashcards and practice tests and tells you what to review next, so before an exam you know exactly what needs work. BRING YOUR WHOLE SEMESTER IN ONE CLICK Install the AskSia Chrome extension, import your courses from Canvas, Blackboard, Moodle or Brightspace, and your readings, slides and deadlines sync to the app. Sia builds a study plan from your syllabus that you follow on your phone. ANY FORMAT, EVERY DEVICE Photo, text and voice input. iPhone, iPad, Mac, Windows, web and Chrome extension, with your library, notes and chat history synced everywhere. FREE TO START • 300 minutes of transcription a month • 100 PDF pages a month PREMIUM PLANS PLUS, SUPER and A+ remove the limits. A+ includes the GPA Guarantee: use AskSia A+ for a full term and improve by at least one letter grade, or get 100% of your money back. Terms apply. A 3-day free trial is available on selected plans. Cancel anytime in the app. BUILT FOR • College and graduate students • High school students preparing for finals and entrance exams • International students studying in a second language • Anyone who learns faster with an AI tutor that explains AskSia is an AI study assistant that helps you understand your coursework rather than doing it for you: every answer comes with reasoning and citations. Contact: https://www.asksia.ai/contact-us Privacy: https://www.asksia.ai/policies/privacy Terms: https://www.asksia.ai/policies/termofuse

About

StudyOS

Transform your study materials into interactive flashcards, summaries, and quizzes with AI. This app efficiently prepares you for exams and helps you master concepts on the go, making learning faster and more engaging.

Highlights
  • AI-generated flashcards
  • Automated summaries
  • Personalized quizzes
  • Material upload (notes, PDFs, images)
  • Spaced repetition techniques
  • Progress tracking
Features
Read full description

Say goodbye to tedious and traditional methods. With StudyOS, your notes, PDFs, or even images are instantly transformed into smart flashcards, quick summaries, and multiple-choice questions – without manual copy-pasting, without hassle. Our powerful AI takes your material and quickly generates dynamic flashcards, summaries, and personalized quizzes, helping you prepare efficiently for big exams or review key concepts on the go. Focus on what truly matters, wherever you are. StudyOS is designed to boost your study effectiveness, making learning faster, more engaging, and with a cleaner, smoother interface. Simply upload your study materials and let our AI turn them into flashcards, summaries, and quizzes tailored to you. This main functionality is just the beginning of how StudyOS will revolutionize your learning. We’re just getting started! Soon you’ll be able to do even more, all powered by AI: generate quick summaries of your notes, create multiple-choice questions and more features from your study materials, test yourself, and master concepts with advanced spaced repetition techniques. Download StudyOS today and study smarter, not harder. Upgrade to StudyOS PRO for unlimited AI access and advanced features. Our terms: https://studyosapp.app/en/terms Our privacy policy: https://studyosapp.app/en/privacy

Screenshots

AskSia4 screens
StudyOS4 screens

Verdict

The call

The clearest difference is rating: StudyOS at 4.9 against AskSia's 4.1. On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AskSia sells 7 in-app purchases, starting at $5.99 per 7 days and StudyOS sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

StudyOS holds the better App Store score, 4.9 against 4.1. Both are backed by a comparable volume of ratings — 62 and 66 respectively.

UpkeepUpdate frequency

AskSia ships an update weekly, StudyOS every 9 days. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
AskSia versus StudyOS: the parameters behind the verdict, then further details
ParameterAskSiaStudyOS
PriceFreeFree
Rating4.1 (62 ratings)4.9 (66 ratings) — better
Positive reviews82.9% of reviews—
Number of ratings6266 — better
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.1
Further details — not scored
Size69 MB118 MB
Age rating12+4+
DeveloperASKSIA INCDANIEL PONCELAS VARGAS

Customer experience

AskSia

All ratings62 ratings
Positive75.8%
Neutral4.8%
Negative19.4%
Written reviews158 reviews
Positive82.9%
Neutral3.8%
Negative13.3%

StudyOS

All ratings66 ratings
Positive97.0%
Neutral1.5%
Negative1.5%

In-app purchases

7 purchases

AskSia

Subscriptions7
  • AskSia - A+3 Days trial$5.997 Days
  • AskSia - Plus1 Month trial$14.991 Month
  • AskSia - Super$17.991 Month
Show 4 more
  • AskSia - A+1 Month trial$29.991 Month
  • AskSia - Plus$99.991 Year
  • AskSia - Super$143.991 Year
  • AskSia - A+$155.991 Year
4 purchases

StudyOS

Subscriptions4
  • Premium Access$4.997 Days
  • Premium Access3 Days trial$12.991 Month
  • Premium Access1 Month trial$12.991 Month
Show 1 more
  • Premium Access3 Days trial$69.991 Year

Questions

Is AskSia free?
AskSia is free to download, with in-app purchases available.
Is StudyOS free?
StudyOS is free to download, with in-app purchases available.
Which has better reviews, AskSia or StudyOS?
StudyOS is rated higher. AskSia averages 4.1 out of 5 from 62 ratings, while StudyOS averages 4.9 from 66 ratings.
Do AskSia or StudyOS have ads?
Neither AskSia nor StudyOS shows ads.
Which is updated more often, AskSia or StudyOS?
AskSia ships an update weekly, and StudyOS every 9 days. Most recently, AskSia was updated on October 17, 2026 and StudyOS on October 3, 2026.

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