Know AI vs DuoMentor
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Know AI
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Know AI helps you study faster and smarter. Upload your study materials or take a photo of any homework problem. The app summarizes content, creates quizzes and flashcards, and gives step-by-step solutions using AI. Key Features Snap and Summarize Take a picture of handwritten or printed notes. Get instant summaries and flashcards to help you retain key points. Upload and Quiz Upload PDFs or documents and receive a condensed summary along with automatically generated flashcards and quizzes. Homework Solver Take a photo of any homework problemβmath, science, or textβand receive a clear, step-by-step solution. Ideal for students who need instant answers and explanations. AI-Powered Study Tools Get answers fast with AI. From flashcards to solutions, Know AI turns your materials into study tools tailored for efficient learning. Benefits Summarize notes and textbooks automatically Create personalized quizzes and flashcards Solve math and science problems from photos Save time preparing for exams and assignments Use AI to improve study retention and performance Know AI supports all major subjects and is built to help students stay on track, learn efficiently, and succeed. Privacy Policy: https://www.termsfeed.com/live/cfcdad3f-1866-49b9-bda2-96cb397bda10 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DuoMentor
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Snap a photo of any question with DuoMentor and learn the full method, step by step, not just the answer. Ask your teacher when you get stuck, or turn the question into your own video lesson. VIDEO SOLUTIONS Snap your question and in about 2 minutes watch a video lesson narrated by a teacher. Formulas are written on the board step by step, and figures and graphs are drawn as you go. Share the video with friends or save the lesson notes as a PDF. STEP-BY-STEP SOLUTIONS FROM A PHOTO Math, geometry, physics, chemistry, biology and more, with every step explained in plain words. ASK YOUR TEACHER Chat about any step you don't get, or have the same question explained a different way. EXAM PREP SAT, ACT, AP and many more exams worldwide: mock exams, topic lessons, smart flashcards, score tracking and a weekly leaderboard. CLASSROOMS Teachers create classes, assign and grade homework; students join with an invite code. 11 LANGUAGES English, Turkish, German, French, Spanish, Russian, Arabic, Portuguese, Indonesian, Hindi and Vietnamese. START FREE Start with free daily solutions. Pro gives you more solutions, video credits and no ads, or buy credit packs for videos only. Subscriptions renew unless cancelled at least 24 hours before the end of the period; manage them in your account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.4vcore.com/privacypolicy/
Screenshots
Verdict
The clearest difference is ads: Know AI at none against DuoMentor's shown. Know AI also leads on update cadence (weekly vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Know AI sells 2 in-app purchases, starting at $9.99 per month and DuoMentor sells 10 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.
Know AI ships an update weekly, DuoMentor fortnightly. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | Know AI | DuoMentor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly β better | Fortnightly |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 β better |
| Further details β not scored | ||
| Size | 32 MB | 105 MB |
| Age rating | 4+ | 4+ |
| Developer | DEVNEST (PTY) LTD | ERTUGRUL YILMAZ |
In-app purchases
Know AI
- Monthly Subscription$9.991 Month
- Yearly Subscription$69.991 Year
DuoMentor
- Question Pack Monthly$3.491 Month
- Pro 3 Months$27.993 Months
- Teacher Pro 3 Months$27.993 Months
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- Question Pack Yearly$31.991 Year
- Pro 6 Months$53.996 Months
- Teacher Pro 6 Months$53.996 Months
- 100 Video Credits$2.99
- 250 Video Credits$6.99
- 600 Video Credits$15.99
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- 1000 Video Credits$24.99









