StudyOS vs Flashka
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- AI-generated flashcards
- Automated summaries
- Personalized quizzes
- Material upload (notes, PDFs, images)
- Spaced repetition techniques
- Progress tracking
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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
Flashka
Transform notes, PDFs, and lecture slides into interactive flashcards and quizzes using AI. Study effectively with spaced repetition and test your knowledge with AI-powered mock exams. Get instant explanations from a personal AI tutor.
- AI flashcard generation
- Import notes, PDFs, photos
- Spaced repetition learning
- AI-powered quizzes
- Personal AI tutor
- Interactive material highlighting
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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 +1.5M 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
Verdict
The clearest difference is ads: StudyOS at none against Flashka's shown. Flashka's advantage is ratings volume (333 vs 66). 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
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.
On the App Store both sit at effectively the same score — 4.9 for StudyOS against 4.8 for Flashka. That said, the two scores are not equally well evidenced: Flashka has 333 ratings behind it against 66, so its average is the more settled of the two.
StudyOS ships an update every 9 days, Flashka fortnightly. The most recent releases landed on August 12, 2026 and September 24, 2026 respectively.
| Parameter | StudyOS | Flashka |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (66 ratings) — better | 4.8 (333 ratings) |
| Positive reviews | — | 82.6% of reviews |
| Number of ratings | 66 | 333 — better |
| Update frequency | Every 9 days — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.1 | 16.4 — better |
| Further details — not scored | ||
| Size | 118 MB | 169 MB |
| Age rating | 4+ | 4+ |
| Developer | DANIEL PONCELAS VARGAS | Flashka OÜ |
Customer experience
StudyOS
Flashka
In-app purchases
StudyOS
- Premium Access$4.997 Days
- Premium Access3 Days trial$12.991 Month
- Premium Access1 Month trial$12.991 Month
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- Premium Access3 Days trial$69.991 Year
Flashka
- Wizard Subscription$3.991 Month
- Wizard Subscription$9.991 Month
- Black Friday Discount$29.991 Year
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- Wizard Subscription$59.991 Year
