| Core Identity |
| Developer | Electronial | Desmos | Glindemann, Sennoun, Langer GbR | CASIO COMPUTER CO., LTD. | CASIO COMPUTER CO., LTD. | Paul Leadbeater |
| Category | Education | Education | Education | Education | Education | Education |
| Platform | Android, iOS | iOS, Android | iOS | iOS, Android | iOS, Android | iOS, Android |
| Store Metrics |
| Rating | 4.3 / 5 | 4.3 / 5 | 4.5 / 5 | 3.4 / 5 | 2.7 / 5 | 0.0 / 5 |
| Ratings Count | 545 | 1,244 | 26 | 11 | 9 | 0 |
| Price | Free | Free | Free | Free | Free | Free |
| Release Date | Mar 2, 2018 | Jun 18, 2013 | Aug 21, 2017 | Jul 3, 2017 | Aug 31, 2017 | Apr 15, 2026 |
| Last Updated | Dec 14, 2022 | Mar 12, 2026 | May 5, 2026 | Jun 25, 2025 | Jun 25, 2025 | Apr 16, 2026 |
| Sentiment & Reviews |
| Sentiment | mixed | excellent | - | terrible | - | excellent |
| Score | 45/100 | 85/100 | - | 20/100 | - | 90/100 |
| Praises | - Comprehensive reference material provides value for electronics hobbyists and students learning basic circuit design
- Frequent content updates keep the reference library relevant for active electronics enthusiasts
| - Versatile graphing and calculation tools provide academic utility for students and engineering professionals
- Intuitive interface design makes complex mathematical visualization accessible for casual and advanced users
- Creative features like audio tone generation and custom color palettes encourage non-academic exploration
| - | - The core calculator engine provides a familiar and reliable mathematical experience for students
| - | - Native haptic feedback integration provides a tactile and premium feel during calculator input sessions
- Technical flexibility via temperature and pressure toggles supports specialized scientific calculation requirements
|
| Complaints | - Aggressive monetization and paywalls restrict access to core functionality for free users
- Poor UI design and low-contrast font choices make text difficult to read on mobile screens
- Technical failures prevent users from accessing purchased pro features after payment
| - Lack of a native dark mode causes eye strain during extended night-time study sessions
- UI regressions in the latest update make function selection and list management cumbersome
- Inconsistent behavior with external hardware like Bluetooth keyboards limits productivity on tablet devices
| - | - Aggressive subscription model forces recurring payments for essential features that should be one-time purchases
| - | - |
| Requests | - Dark mode toggle requested to improve text legibility and reduce eye strain
| - Integration of geometry and 3D graphing modes to match the functionality of the web version
- Persistent settings for interface preferences like contrast and text size to avoid manual reconfiguration
| - | - Implementation of a one-time purchase option to replace the current monthly subscription model
| - | - |
| Strategic Intel |
| Strengths | - 30+ calculator suite establishes category authority
- Bluetooth terminal integration creates unique hardware-testing utility
| - Proprietary math engine enables complex calculus visualization
- Accessibility suite functions as a B2B distribution moat into institutional partnerships
- Ad-free interface drives high academic trust
| - Distraction-free interface lowers cognitive load for rapid arithmetic verification
- Automated error detection differentiates the input experience from basic calculators
| - Familiarity with physical ClassPad hardware drives retention among legacy users
- Integrated CAS engine provides advanced symbolic manipulation capabilities
| - | - Step-by-step methodology establishes educational authority
- Offline-first architecture ensures revision reliability
- Haptic feedback integration creates premium tactile feel
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| Weaknesses | - 0.7★ Android-iOS rating gap
- Persistent purchase-restoration bugs
- Poor UI contrast renders text unreadable
| - No native dark mode despite high-frequency user requests
- UI regressions in the latest update make function selection cumbersome
- Inconsistent Bluetooth keyboard support limits tablet productivity
| - Manual data entry model creates friction compared to AI-based photo scanning
- Lack of gamified retention loops limits long-term daily active usage
| - Subscription-only model at $1.99/month triggers high user frustration
- Lack of tablet split-screen support limits academic productivity
- Touch interface is poorly optimized for mobile screens
| - | - No integrated periodic table forces app-switching
- Limited review count hinders social proof
- Lack of 3D visual models vs entrants
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| Pricing | freemium | free | freemium | subscription | subscription | freemium |
| Momentum | Zombie | - | Maintenance | - | - | Maintenance |
| Update Cadence | 2 versions, ~292d avg | - | 1 versions | - | - | 2 versions, 1 majors/6mo, ~232d avg |
