| Core Identity |
| Developer | Polemics Applications LLC | Goodnotes Limited | Notion Labs, Incorporated | Instructure Inc. | Quizlet Inc | Dynalist Inc. |
| Category | Education | Productivity | Productivity | Education | Education | Productivity |
| Platform | iOS | iOS, Android | Android, iOS | iOS, Android | iOS, Android | iOS, Android |
| Store Metrics |
| Rating | 5.0 / 5 | 4.7 / 5 | 4.8 / 5 | 4.7 / 5 | 4.8 / 5 | 4.5 / 5 |
| Ratings Count | 2 | 420,631 | 82,804 | 2,769,223 | 1,065,434 | 2,454 |
| Price | USD0.99 | Free | Free | Free | Free | Free |
| Release Date | Oct 11, 2016 | Jan 15, 2019 | Sep 14, 2017 | Dec 8, 2011 | Aug 9, 2012 | Jul 10, 2021 |
| Last Updated | Apr 28, 2025 | May 4, 2026 | May 5, 2026 | Mar 31, 2026 | Apr 14, 2026 | Mar 23, 2026 |
| Sentiment & Reviews |
| Sentiment | excellent | negative | negative | negative | mixed | mixed |
| Score | 90/100 | 25/100 | 35/100 | 22/100 | 48/100 | 55/100 |
| Praises | - Mobile accessibility allows users to study for certification exams with high convenience
| - Handwritten note taking functionality provides a productive study tool for students
| - Relational database structure provides powerful organization for personal and professional knowledge management
| - Centralized Course Management
| - Academic Effectiveness
- Ease of Content Creation
| - High Customizability and Flexibility
- Powerful Knowledge Management
|
| Complaints | - | - Frequent application crashes and white screen errors disrupt study sessions post-update
| - Frequent app crashes and UI freezing during text editing sessions on mobile devices
| - Persistent Authentication Issues
- Broken To-Do List Functionality
| - Aggressive Monetization
- Intrusive Advertising
| - Poor Mobile UI/UX and Navigation
- Syncing and Cloud Issues
|
| Requests | - | - One-time purchase option requested to replace the current subscription model
| - Toggle switch to disable or hide AI features from the primary interface
| - | - | - |
| Strategic Intel |
| Strengths | - Local-only data architecture reduces friction for adoption in restricted military environments
- High-value VA Disability Tool creates long-term retention
- One-time purchase model removes recurring cost barriers
| - High switching costs via user-created document archives
- Cross-platform sync across iPad, iPhone, and Mac
| - Relational database engine enables complex knowledge management systems
- Template library lowers barrier to entry for new users
| - Massive user base (40M+ learners)
- Unique 'What-If' grade simulation tool
- VPAT 2.2 Accessibility compliance
| - Massive UGC library providing niche subject coverage
- High brand equity with 1.9M+ ratings
- Advanced AI automation for note-to-flashcard creation
| - Unmatched extensibility through community plugins and themes.
- Robust local-first architecture ensuring data sovereignty.
- Strong 'second brain' brand identity among power users.
|
| Weaknesses | - $0.99 price point limits capital for rapid feature iteration
- Lack of cloud-sync prevents multi-device usage
- Limited user base data restricts sentiment-driven development
| - 0.7★ Android-iOS rating gap
- Frequent post-update stability failures
- Subscription-only gating for legacy features
| - Mobile app crashes during long editing sessions
- Forced AI elements disrupt core UI
| - Session persistence bugs (forced logouts)
- Broken To-Do list navigation
- Frequent app freezing on Grades tab
| - Intrusive ads during active study sessions
- Paywalled core features (Learn mode) causing user churn
- Technical bugs with GIF rendering on mobile
| - Declining mobile UI/UX quality causing user frustration.
- Performance bottlenecks (load times) on mobile devices.
- High learning curve for non-technical users.
|
| Pricing | paid | freemium | freemium | free | freemium | freemium |
| Momentum | Zombie | Active | Active | Active | Maintenance | - |
| Update Cadence | 2 versions, 1 majors/6mo, ~3121d avg | 4 versions, 1 majors/6mo, ~12d avg | 5 versions, ~5d avg | 5 versions, 3 majors/6mo, ~16d avg | 3 versions, ~18d avg | - |
