Comparison

Koro AI vs Shale

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

Head to head
About

Koro AI

Transform any course material into study aids like summaries, flashcards, and quizzes. This app guides your revision with a personalized study path, helping you learn faster and retain more information for exams.

Highlights
  • Instant summaries from documents
  • Auto-generated flashcards
  • Custom quiz mode
  • Ask questions about concepts
  • Personalized study path
  • Supports various document types
Features
Read full description

Join the 500,000 students studying with Koro, the app that turns any course into a study path, summaries, flashcards and quizzes โ€” and tells you exactly what to review each day so you're ready on test day. Upload a PDF, a chapter, your notes or a photo. Koro handles the rest. WHAT CAN YOU DO WITH KORO? Instant Summary: upload any document and get a clear, structured study sheet in seconds. Auto Flashcards: generated from your own course in one tap. No more evenings spent making them by hand. Quiz Mode: test yourself on your actual course, not on generic questions. See instantly what you know and what you don't. Ask Mode: stuck on a concept? Ask your question directly on your document and get an explanation at your level. Study Path: chapter by chapter, Koro guides your revision with plenty of practice. WHY KORO? Rereading your notes feels like working. What actually makes things stick is testing yourself and repeating at the right time. Koro automates the painful part โ€” building the study material โ€” so you spend your time on the only thing that counts: learning. High school, college, university, professional exams. Every subject. If you can upload it, Koro can transform it. A TOOL TO LEARN, NOT TO CHEAT Koro doesn't do the work for you. It structures your courses so you actually learn them, faster and better. KORO PREMIUM Unlimited summaries, flashcards and quizzes across all your courses. - Monthly plan - Yearly plan Exact pricing is shown in the app before purchase, in your local currency. Payment will be charged to your Apple account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscriptions and turn off auto-renewal in your Apple account settings. Terms of Use: https://www.koro-ai.app/terms Privacy Policy: https://www.koro-ai.app/privacy Join the Koro community TikTok: https://www.tiktok.com/@koroai_off Instagram: https://www.instagram.com/koroai_off/ Questions? contact@koro-ai.com

About

Shale

Features
Read full description

You already spend hours on your phone. What if that time was earned by learning something that actually matters? Shale locks your most distracting apps and only unlocks them after you study. Every flashcard you complete earns you one minute of screen time. When your time runs out, the apps lock again. No willpower needed. Just a simple deal: learn first, scroll later. HOW IT WORKS 1. Pick the apps you want blocked (TikTok, Instagram, YouTube, and more) 2. Tell Shale what you want to learn. Our AI creates a personalized flashcard deck in seconds 3. Study your cards and earn screen time. 1 card = 1 minute 4. Your apps unlock. When time's up, learn a few more cards to keep going AI-POWERED FLASHCARDS Just describe what you want to learn in plain English: "Help me study for my biology exam" or "Teach me basic Japanese phrases." Shale's AI generates a complete deck tailored to your level. You can also create cards manually or expand any deck with more AI-generated content at any time. SCIENTIFICALLY PROVEN LEARNING Shale uses spaced repetition to show you the right cards at the right time. Cards you struggle with appear more often. Cards you already know fade into the background. You learn faster with less effort. REAL APP BLOCKING This isn't a gentle reminder you can dismiss. Shale uses Apple's Screen Time API to actually block your selected apps until you've earned enough screen time. It works in the background, even when the app is closed. SCHEDULED BLOCKING Set daily blocking hours so Shale only steps in when you want it to. Block apps from 8am to 10pm, or keep them locked around the clock. LEARN ANYTHING Exam prep, new languages, job interview questions, coding concepts, history facts, or any topic you can think of. If you can describe it, Shale can teach it. START YOUR FREE TRIAL Try Shale Pro free for 14 days. Cancel anytime. Terms of Use: https://joinshale.com/terms Privacy Policy: https://joinshale.com/privacy

Screenshots

Koro AI4 screens
Shale3 screens

Verdict

The call

The clearest difference is in-app purchases: Koro AI at none against Shale's 3. On price, update cadence, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Shale sells 3 in-app purchases, starting at $2.99 per 7 days. Koro AI asks for nothing beyond the download.

UpkeepUpdate frequency

Koro AI ships an update every 5 days, Shale every 4 days. Both last shipped on October 31, 2026.

Scorecard1 real difference ยท 7 level
Koro AI versus Shale: the parameters behind the verdict, then further details
ParameterKoro AIShale
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 daysEvery 4 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
MonetizationFreemiumโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better16.4
Further details โ€” not scored
Size18 MB59 MB
Age rating4+4+
DeveloperKoro AIElias Leinonen

In-app purchases

None

Koro AI

No in-app purchases

3 purchases

Shale

Subscriptions2
  • Shale Pro Weekly3 Days trial$2.997 Days
  • Shale Annual Plan3 Days trial$34.991 Year
One-time1
  • Shale Pro Lifetime$99.99

Questions

Is Koro AI free?
Koro AI is free to download, with no in-app purchases.
Is Shale free?
Shale is free to download, with in-app purchases available.
Do Koro AI or Shale have ads?
Neither Koro AI nor Shale shows ads.
Which is updated more often, Koro AI or Shale?
Koro AI ships an update every 5 days, and Shale every 4 days. Most recently, Koro AI was updated on October 31, 2026 and Shale on October 31, 2026.

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