Comparison

StudyOS vs Flashka

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

Head to head
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

About

Flashka

Transform notes, PDFs, and lecture slides into interactive flashcards and AI-powered quizzes. Utilize spaced repetition and a personal AI tutor to master material and ace exams.

Highlights
  • AI-generated flashcards from notes/PDFs
  • Spaced-repetition study algorithms
  • AI-powered mock quizzes
  • Personal AI tutor for explanations
  • Import handwritten notes and photos
  • 24/7 study assistance
Features
Read full description

Learn 10× faster and ace every exam with Flashka — the best AI flashcard and quizzes app. Turn any notes, PDFs, photos or lecture slides into dynamic flashcards and mock quizzes in seconds. With Flashka you can: Import any material
Upload your handwritten notes, PDFs, or photos, and highlight and interact with them Generate flashcards
Let our AI create cards exclusively from your material, forget endless writing. Study in the most effective way 
Use spaced‑repetition algorithms that adapt to your studying Test your knowledge
Practice with AI‑powered quizzes & mock exams, from your flashcards Get 24/7 professor on your side
Ask Professor Ka, your personal AI tutor, for instant explanations, memorisations and chat. Join +2M students who’ve improved grades and conquered exams with Flashka. Download now and start studying smarter. Terms of Use: https://flashka.ai/terms Privacy Policy: https://flashka.ai/privacy

Screenshots

StudyOS4 screens
Flashka4 screens

Verdict

The call

The clearest difference is ads: StudyOS at none against Flashka's shown. Flashka's advantage is ratings volume (398 vs 91). On price, rating, update cadence and in-app purchases 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. StudyOS sells 4 in-app purchases, starting at $4.99 per 7 days and Flashka sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for StudyOS against 4.8 for Flashka. Both are backed by a comparable volume of ratings — 91 and 398 respectively.

UpkeepUpdate frequency

StudyOS ships an update every 9 days, Flashka fortnightly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 8 level
StudyOS versus Flashka: the parameters behind the verdict, then further details
ParameterStudyOSFlashka
PriceFreeFree
Rating4.9 (91 ratings) — better4.8 (398 ratings)
Positive reviews—80.4% of reviews
Number of ratings91398 — better
Update frequencyEvery 9 days — betterFortnightly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.116.4 — better
Further details — not scored
Size118 MB173 MB
Age rating4+4+
DeveloperDANIEL PONCELAS VARGASFlashka OÜ

Customer experience

StudyOS

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

Flashka

All ratings398 ratings
Positive95.7%
Neutral2.8%
Negative1.5%
Written reviews56 reviews
Positive80.4%
Neutral10.7%
Negative8.9%

In-app purchases

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
4 purchases

Flashka

Subscriptions4
  • Wizard Subscription$3.991 Month
  • Wizard Subscription$9.991 Month
  • Black Friday Discount$29.991 Year
Show 1 more
  • Wizard Subscription$59.991 Year

Questions

Is StudyOS free?
StudyOS is free to download, with in-app purchases available.
Is Flashka free?
Flashka is free to download, with in-app purchases available.
Which has better reviews, StudyOS or Flashka?
StudyOS is rated higher. StudyOS averages 4.9 out of 5 from 91 ratings, while Flashka averages 4.8 from 398 ratings.
Do StudyOS or Flashka have ads?
Flashka shows ads; StudyOS does not.
Which is updated more often, StudyOS or Flashka?
StudyOS ships an update every 9 days, and Flashka fortnightly. Most recently, StudyOS was updated on November 5, 2026 and Flashka on November 6, 2026.

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