Comparison

AInstein vs MindKoi

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

Head to head
About

AInstein

Features
Read full description

AInstein – The best app to take study notes. Turn PDFs, audio recordings, images or youtube video to structured notes. AInstein will help you generate flashcards and quizzes from your notes to help you study smarter and learn faster. Whenever you're stuck somewhere, chat with AInstein assistant to help you gather more information about your notes. Smart features: - PDF notes - Upload a PDF file and AIsntein will turn it into easily understandable lessons. - AI Audio transcription - Record your voice or a podcast or some meeting or lecture and let AInstein summarize it for you. - Summarize photos - Take a picture of the problem you're trying to solve and AInstein will provide a solution in seconds. - AI flashcards and quizzes - Generate flashcards and quizzes from your notes to help you learn smarter. - Translate your notes to any language - Korean, Japanese, Chinese, Russian, Italian, French, German or Spanish. - Keep track of your learning progress and study streaks over time. - Timely reminders to keep you motivated. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

MindKoi

Features
Read full description

MindKoi is your intelligent study companion that turns documents, PDFs, audio, YouTube videos, and web content into personalized learning materials. Study smarter with AI-generated flashcards, quizzes, summaries, and podcasts—all powered by advanced machine learning. ** KEY FEATURES** Upload Anything • PDF documents • Text notes • Audio recordings • YouTube videos • Web articles Support for multiple formats means you can study from any source, anywhere. AI-Powered Content Generation. Transform your materials into: • Flashcards: Interactive cards with spaced repetition algorithm • Quizzes: Multiple choice and short answer questions • Summaries: Smart overviews with page references • Podcasts: Audio versions of your study materials Spaced Repetition System • Scientific algorithm that optimizes your review schedule • Mastery tracking that identifies truly learned material • Personalized intervals that adapt to your performance • Focus on what you don't know, not what you've mastered Study Session Analytics • Track your recall accuracy • See your progress over time • Mastery indicators for completed topics • Detailed session summaries AI Study Assistant • Chat with AI about your materials • Get explanations and clarifications • Ask questions and receive instant answers • Enhanced learning through interactive Q&A Audio Learning • Generate podcasts from any material • Listen on-the-go • Perfect for commutes and workouts • Supports all material types Beautiful, Intuitive Interface • Liquid glass design for modern aesthetics • Smooth animations and transitions • Swipe-based navigation • Clean, distraction-free studying experience Sync Across Devices • All your materials in one place • Access from anywhere • Cloud-based storage • Seamless device switching **PERFECT FOR:** • Students: Transform lecture notes and textbooks into study materials • Professionals: Study for certifications and exams efficiently • Language Learners: Practice with flashcards and audio content • Researchers: Organize and review research papers quickly • Anyone: Convert any content into actionable learning materials **WHY MindKoi?** • Save Time: No more manual flashcard creation. Upload once, study forever. • Study Smarter: AI identifies key concepts and creates comprehensive study materials automatically. • Master Content: Spaced repetition ensures you remember what matters most. • Learn Anywhere: Study on your phone, tablet, or computer—your materials sync everywhere. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AInstein4 screens
MindKoi4 screens

Verdict

The call

The clearest difference is update cadence: MindKoi at every 10 days against AInstein's monthly. AInstein's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support 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. AInstein sells 3 in-app purchases, starting at $7.99 per 7 days and MindKoi sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AInstein ships an update monthly, MindKoi every 10 days. Both last shipped on October 28, 2026.

Scorecard2 real differences · 4 level
AInstein versus MindKoi: the parameters behind the verdict, then further details
ParameterAInsteinMindKoi
PriceFreeFree
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size70 MB18 MB
Age rating+44+
DeveloperPankaj KumarPavel Kazlou

In-app purchases

3 purchases

AInstein

Subscriptions3
  • Weekly Unlimited$7.997 Days
  • Monthly Unlimited$14.991 Month
  • Yearly Unlimited$89.991 Year
2 purchases

MindKoi

Subscriptions2
  • Monthly Plus$9.991 Month
  • Annual Plus3 Days trial$44.991 Year

Questions

Is AInstein free?
AInstein is free to download, with in-app purchases available.
Is MindKoi free?
MindKoi is free to download, with in-app purchases available.
Do AInstein or MindKoi have ads?
Neither AInstein nor MindKoi shows ads.
Which is updated more often, AInstein or MindKoi?
AInstein ships an update monthly, and MindKoi every 10 days. Most recently, AInstein was updated on October 28, 2026 and MindKoi on October 28, 2026.

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