MistakeBook vs BY My Question
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MistakeBook
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MistakeBook turns “mistake review” into a sustainable study workflow. Inspired by the forgetting curve and spaced repetition, it automatically schedules your next review based on your familiarity—so you remember more in less time. Quickly add questions and answers via Camera / Photos / Paste—no more paper cut-and-paste. Use the built-in crop tool for precise framing, then handwrite annotations and hide answers (masking) to start reviewing right away. All content and metadata (subject, learning content, reason analysis, tags, created time, etc.) are stored locally on your device, and the app works offline. Key Features “+” Add Mistakes: Create question/answer sets from camera, photo library, or paste. Organize with categories and tags. “Today” & “Upcoming”: View what to review, reminders, and review history. Auto-schedule by star-rated familiarity; mastered items move to “Completed.” “Stats”: Identify frequent mistakes and weak areas with data to improve efficiency. “All”: Export A4 PDFs (questions/answers/reviews) for sharing or printing. Support ZIP export/import for backup and exchange. “Exam Paper”: Select mistakes and export as PDF or editable ODF for printing and practice. “Settings”: Set daily reminder time, manage subscriptions, manage subjects/learning content/reason analysis, and import ZIP backups/shared files. Free plan: up to 30 mistake entries. Subscription: create unlimited mistake entries (auto-renewable). Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.antimistakenote.com/Privacy/Privacy.html
BY My Question
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BY My Question — Your Personalized Exam Question Bank Management Tool Perfect for: Learners preparing for professional certifications, civil service exams, or job-related assessments Students who want to organize scattered past exam questions into a structured question bank Advanced learners who want to repeatedly review incorrect answers and strengthen weak areas Core Features Smart OCR Scanning Take a photo of past exam questions with one tap. AI automatically recognizes the question text and answer options, then creates a question bank for you without manual entry. Multiple Question Bank Management Create question banks by subject or chapter, organize them with categories and tags, and sync your data across multiple devices through the cloud. Interactive Quizzes Simulate a real exam environment with automatic scoring, while tracking the time spent and accuracy rate for each question. Learning Analytics Record every quiz result, monitor your learning progress, and clearly see your improvement over time. Incorrect Answer Review Focus on questions you answered incorrectly, strengthen weaker areas, and improve your chances of passing. Why Choose BY My Question? • No manual question entry. Simply take a photo to create your question bank. • Supports questions with 2 to 5 answer options, making it suitable for various types of exams. • Cloud synchronization provides a seamless experience across multiple devices. • Privacy-focused with comprehensive data protection. • Available in both Chinese and English. Let BY My Question become your strongest study partner on the road to exam success. Contact and Support Email: [services@bymind.world](mailto:services@bymind.world) Privacy Policy: https://www.notion.so/BY-My-Question-Privacy-Policy-35e8e00d35cc80ada93df80982794989
Screenshots
Verdict
The clearest difference is in-app purchases: BY My Question at none against MistakeBook's 1. On price, update cadence, ads 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
Both are free to download. MistakeBook sells 1 in-app purchase, starting at $0.99 per 6 months. BY My Question asks for nothing beyond the download.
MistakeBook ships an update every 2 weeks, BY My Question every 3 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.
| Parameter | MistakeBook | BY My Question |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 72 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Wei Shuo Wu | Jia Hong Kuo |
In-app purchases
MistakeBook
- MistakeBook訂閱方案$0.996 Months
BY My Question
No in-app purchases








