MistakeBook vs Clari Mentor
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
Clari Mentor
This AI-powered study tool offers personalized, on-device tutoring and question management for students. It focuses on privacy, providing step-by-step guidance and tools like flashcards and note generation to enhance learning and retention.
- Privacy-first, on-device operation
- Step-by-step AI tutor with phased engine
- Subject-aware playbooks and classic strategies
- Progressive reveal flashcards with mastery tracking
- Enhanced note generation for exam-ready cards
- Built-in coaching system
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Clari Mentor: Smart Study Notes, Step-by-Step AI & Local Knowledge Base Notes without structure get buried. Quick solvers without context don't teach. Clari Mentor is a focused study workspace that turns handwritten scratchpad, textbook snapshots, and difficult problems into organized Markdown notes, guided step-by-step by AI and stored securely on your own device. Designed for middle school, high school, university STEM coursework, and independent research. 【Turn Paper & Photos into Clean Markdown】 • Photograph chalkboard notes, textbook problems, or handwritten calculations with your camera. • Smart OCR recognizes text, diagrams, and math formulas, formatting them into standard LaTeX and clean Markdown. • Search instantly across problem text, derivations, tags, and past mistakes using fast prefix and full-text filters. • Keep question prompts, step-by-step solutions, and your personal reflections unified in one archive. 【Enhanced Notes: Visual Summary Cards】 • Turn long, complex derivations into clean, structured summary cards with one tap. • Automatic formula derivation trees highlight core logic, givens, and critical steps at a glance. • Choose from flexible card layouts (A4 handout, widescreen presentation, or compact study cards). • Low-glare color palettes designed for long study sessions: Amber Notebook, Misty Harbor, Polar Archive, and Berry Cocoa. • Knowledge Constellation: Map relationships between concepts with prerequisite, extension, and application links across your semester. 【Two-Column Reader & In-Text Annotations】 • Reader Mode (iPad & iPhone landscape): Browse your notebook index on the left while studying full solutions on the right, without jumping between screens. • Smart Annotations: Highlight any formula, term, or confusing line to ask the AI for a targeted explanation. • Add your own notes, flag common traps, and build contextual follow-up threads attached directly to the source text. 【Step-by-Step AI Tutoring (Not Just Answers)】 • Four-Phase Coaching: Operates systematically—Understand the Problem → Formulate a Plan → Execute → Reflect. The tutor verifies knowns and constraints before moving ahead. • Stuck Detection: When you hit a roadblock, hints scale down to smaller clues rather than blurting out the final answer. • Multi-Model Comparison: Compare explanations side-by-side across configured AI providers and save the clearer derivation into your note. • Custom Coach Profiles: Build reusable AI tutoring personas adjusted for grade level, explanation style, and preferred depth. 【Progressive Flashcards & Review Scheduling】 • Tiered Reveal Slider: Review difficult questions with a 0% to 100% opacity slider. Drag slowly to reveal hints line by line, logging the exact point you recalled the concept. • Spaced Repetition: Built-in Ebbinghaus curve algorithms schedule reviews at optimal intervals so you revisit key ideas right before memory fades. 【100% Local-First Privacy & BYO-Key Freedom】 • Complete Data Ownership: Your notes, questions, and study history stay on your local device and private iCloud. • No accounts, no telemetry, and zero tracking. • Bring Your Own Key (BYO-Key): Store private API keys (Gemini, OpenAI, DeepSeek, Claude) securely in the iOS Keychain. • Portable Exports: Export notes to clean Markdown, formatted handouts, or print-ready high-resolution PDFs. 【Capture Anywhere & Mac Companion】 • Camera & Batch OCR: Quickly digitize multi-page assignments or reference materials. • Clari Clip Extension: Push web articles and AI chat discussions straight into your notebook with one click. • Clari Toolkit: Free Mac companion app for desktop management and archive imports. Download Clari Mentor today. Keep your notes organized, your thinking sharp, and your data private.
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Verdict
MistakeBook and Clari Mentor are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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 and Clari Mentor sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
MistakeBook ships an update every 2 weeks, Clari Mentor every 10 days. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.
| Parameter | MistakeBook | Clari Mentor |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 18.6 |
| Further details — not scored | ||
| Size | 72 MB | 139 MB |
| Age rating | 4+ | 4+ |
| Developer | Wei Shuo Wu | Yu Fei Tong |
In-app purchases
MistakeBook
- MistakeBook訂閱方案$0.996 Months
Clari Mentor
- Clari Mentor - Study Buddy1 Month trial$0.991 Month
- 3-Month Plan: Exam Prep & Focus$1.993 Months
- Clari Mentor - Study Buddy$7.991 Year
- Clari Mentor - Study Buddy$7.99








