| Core Identity |
| Developer | Stanislav Soroka | Incpt.Mobis | 7th Gear | Impala Studios | Tim O's Studios, LLC | Philip Stephens | Incpt.Mobis | MoseratumApps |
| Category | Utilities | Utilities | Utilities | Utilities | Utilities | Tools | Education | Tools |
| Platform | Android, iOS | iOS, Android | iOS, Android | Android, iOS | Android, iOS | Android, iOS | iOS | Android, iOS |
| Store Metrics |
| Rating | 0.0 / 5 | 4.6 / 5 | 4.8 / 5 | 4.7 / 5 | 4.9 / 5 | 4.5 / 5 | 4.5 / 5 | 4.5 / 5 |
| Ratings Count | 0 | 35,622 | 4,260 | 1,715,926 | 408,225 | 312 | 49,766 | 323 |
| Price | USD0.99 | Free | $0.99 | Free | Free | Free | Free | Free |
| Release Date | Jun 26, 2025 | Aug 31, 2011 | May 2, 2011 | Oct 22, 2010 | Dec 21, 2011 | Feb 28, 2023 | Oct 17, 2018 | Feb 28, 2023 |
| Last Updated | Jun 27, 2025 | Mar 12, 2026 | Dec 9, 2020 | Apr 23, 2026 | May 2, 2025 | Apr 24, 2026 | Feb 26, 2026 | May 5, 2026 |
| Sentiment & Reviews |
| Sentiment | mixed | negative | mixed | mixed | mixed | - | - | - |
| Score | 45/100 | 35/100 | 55/100 | 45/100 | 35/100 | - | - | - |
| Praises | - Core calculator functionality provides reliable utility for daily arithmetic and store shopping tasks
| - Simple and accurate calculation logic provides reliable utility for everyday math tasks
| - 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
| - All-in-one utility including scientific functions and unit converters provides significant daily value
| - Simple and accurate calculation interface provides reliable utility for everyday math tasks
- Large button layout improves usability compared to standard factory calculator apps
| - | - | - |
| Complaints | - Post-update UI changes removed the running total display and quick answer functionality
- Visual regressions including oversized UI elements and flashing cursors disrupt the calculation flow
| - Aggressive full-screen advertisements interrupt core functionality and degrade the user experience
| - 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
| - Removal of the running total feature post-update disrupts established user calculation habits
| - 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 | - Integration of financial conversion tools like currency converters into the primary interface
| - Integration of unit and currency conversion tools to match stock calculator capabilities
| - 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 converter and memory functions into the core stock calculator experience
| - Integration of currency and unit conversion tools for broader utility
| - | - | - |
| Strategic Intel |
| Strengths | - Offline-first architecture functions as a switching-cost barrier for maritime professionals
- Specialized bilinear interpolation serves as a technical differentiator
| - Mathematical display engine functions as a brand moat by increasing academic switching costs
- History tape retention loop reduces friction for repetitive multi-step calculations
| - Leather-textured UI creates distinct brand identity
- Integrated note-taking provides utility beyond arithmetic
- One-time purchase model avoids subscription fatigue
| - 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
| - 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
- Removal of running total feature in the latest update
- UI scaling issues on Android
| - Aggressive full-screen ad frequency drives high churn among core utility users
- Recent UI regressions removed essential quick-answer displays, alienating long-term power users
| - 0.4★ rating gap between Android and iOS
- Broken widget functionality on newer hardware
- Lack of modern graphing capabilities
| - 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
| - Intrusive full-screen ads interrupt calculation flow
- Recent UI changes removed real-time sum previews
- Technical instability reported post-update
| - | - | - |
| Pricing | freemium | freemium | paid | freemium | free | free | free | free |
| Momentum | Maintenance | Maintenance | Zombie | Active | Maintenance | Intense | Active | Intense |
| Update Cadence | 2 versions, 1 majors/6mo, ~269d avg | 5 versions, 5 majors/6mo, ~144d avg | 5 versions, 3 majors/6mo, ~897d avg | 5 versions, 3 majors/6mo, ~14d avg | 5 versions, 1 majors/6mo, ~379d avg | 5 versions | 5 versions | 5 versions |
