| Core Identity |
| Developer | MORAVIA Consulting, spol. s r.o. | Impala Studios | Linguan Data | 7th Gear | Adobe Inc. | Tim O's Studios, LLC | Mediprocesos S.A. |
| Category | Utilities | Utilities | Productivity | Utilities | Business | Utilities | Health & Fitness |
| Platform | Android, iOS | Android, iOS | iOS, Android | iOS, Android | iOS | Android, iOS | iOS, Android |
| Store Metrics |
| Rating | 4.8 / 5 | 4.7 / 5 | 4.9 / 5 | 4.8 / 5 | 4.9 / 5 | 4.9 / 5 | 3.8 / 5 |
| Ratings Count | 193 | 1,715,926 | 17,041 | 4,260 | 1,540,221 | 408,225 | 53 |
| Price | USD14.99 | Free | $0.99 | $0.99 | Free | Free | Free |
| Release Date | Mar 2, 2012 | Oct 22, 2010 | Aug 27, 2010 | May 2, 2011 | May 31, 2017 | Dec 21, 2011 | Mar 22, 2016 |
| Last Updated | Feb 3, 2026 | Apr 23, 2026 | Oct 22, 2025 | Dec 9, 2020 | Mar 25, 2026 | May 2, 2025 | Apr 8, 2026 |
| Sentiment & Reviews |
| Sentiment | terrible | mixed | - | mixed | positive | mixed | - |
| Score | 15/100 | 45/100 | - | 55/100 | 76/100 | 35/100 | - |
| Praises | - Scientific calculator emulation provides accurate RPN functionality for long-term engineering professionals
| - All-in-one utility including scientific functions and unit converters provides significant daily value
| - | - Simple and accurate calculation tools provide reliable utility for everyday personal and business tasks
- Integrated note-taking and calculation logs assist users in managing complex multi-step financial references
- One-time purchase model offers a fair value proposition compared to subscription-based calculator alternatives
| - Ease of Use
- Image Enhancement
| - Simple and accurate calculation interface provides reliable utility for everyday math tasks
- Large button layout improves usability compared to standard factory calculator apps
| - |
| Complaints | - Application fails to launch post-update, displaying only a persistent loading animation
| - Removal of the running total feature post-update disrupts established user calculation habits
| - | - Recent design changes post-update removed critical quick-answer displays and altered input box functionality
- Technical regressions post-update cause application instability and unexpected navigation to the device lock screen
- Widget functionality remains broken or unresponsive on specific iPad and iPhone hardware configurations
| - Subscription Cost
- Technical Reliability
| - Intrusive full-screen advertisements interrupt calculation flow and block core functionality
- Recent design changes removed essential quick-answer displays and modified button placement
- Technical instability including unexpected app closures and lock-screen redirects
| - |
| Requests | - Option to revert to classic interface layouts for users preferring vintage design aesthetics
| - Integration of currency converter and memory functions into the core stock calculator experience
| - | - Integration of specialized conversion tools like currency and unit converters into the standard interface
- Advanced mathematical features including graphing capabilities and expanded scientific function buttons
| - | - Integration of currency and unit conversion tools for broader utility
| - |
| Strategic Intel |
| Strengths | - RPN engine emulation creates high switching costs for legacy engineering professionals
- Programmable memory builds long-term dependency for power users
| - 200 million download footprint provides massive top-of-funnel acquisition
- All-in-one utility design creates high daily session utility
- VoiceOver and high-contrast accessibility features expand addressable market
| - | - Leather-textured UI creates distinct brand identity
- Integrated note-taking provides utility beyond arithmetic
- One-time purchase model avoids subscription fatigue
| - Deep integration with Adobe Document Cloud and Acrobat
- Advanced AI-driven cleanup tools (Magic Eraser, Straighten)
- High brand trust and enterprise-grade security
| - High-visibility button layout reduces input error rates
- Material 3 design maintains current platform aesthetic standards
| - |
| Weaknesses | - 0.7★ Android-iOS rating gap on majority Android base
- Mandatory account creation for basic scanning drives high-friction churn
- Persistent launch failures post-update
| - Removal of running total feature disrupts power-user calculation habits
- Aggressive subscription prompts drive high churn in the free tier
- UI scaling issues on non-full-screen devices hinder input visibility
| - | - 0.4★ rating gap between Android and iOS
- Broken widget functionality on newer hardware
- Lack of modern graphing capabilities
| - High subscription cost ($10/mo) causing user friction
- Technical bugs including login loops and data loss in multi-page scans
- Lack of specialized ID/Passport scanning modes
| - Intrusive full-screen ads interrupt calculation flow
- Recent UI changes removed real-time sum previews
- Technical instability reported post-update
| - |
| Pricing | freemium | freemium | paid | paid | freemium | free | free |
| Momentum | Maintenance | Active | Maintenance | Zombie | Maintenance | Maintenance | Intense |
| Update Cadence | 5 versions, 2 majors/6mo, ~451d avg | 5 versions, 3 majors/6mo, ~14d avg | 5 versions | 5 versions, 3 majors/6mo, ~897d avg | 1 versions | 5 versions, 1 majors/6mo, ~379d avg | 5 versions |
