| Core Identity |
| Developer | Oval Software Oy | Impala Studios | Cleveni Inc. | Jindrich Houska | Zac Cohan | Andrew J Clark | Air Apps Systems |
| Category | Productivity | Utilities | Productivity | Utilities | Productivity | Utilities | Utilities |
| Platform | Android, iOS | Android, iOS | Android, iOS | Android, iOS | iOS | iOS | Android, iOS |
| Store Metrics |
| Rating | 4.6 / 5 | 4.7 / 5 | 4.7 / 5 | 4.6 / 5 | 4.9 / 5 | 4.8 / 5 | 4.7 / 5 |
| Ratings Count | 444 | 1,715,926 | 12,134 | 205 | 396 | 1,314 | 82,170 |
| Price | Free | Free | Free | Free | Free | Free | Free |
| Release Date | Sep 5, 2014 | Oct 22, 2010 | Mar 31, 2017 | Oct 15, 2022 | May 3, 2020 | Feb 13, 2014 | Nov 8, 2016 |
| Last Updated | Apr 1, 2024 | Apr 23, 2026 | Mar 18, 2026 | Apr 23, 2026 | Apr 17, 2026 | Oct 21, 2024 | Dec 12, 2025 |
| Sentiment & Reviews |
| Sentiment | mixed | mixed | mixed | - | - | positive | - |
| Score | 45/100 | 45/100 | 45/100 | - | - | 82/100 | - |
| Praises | - Simple and accurate calculation logic provides reliable utility for everyday math tasks
| - All-in-one utility including scientific functions and unit converters provides significant daily value
| - Versatile calculator suite provides a comprehensive toolset for diverse daily mathematical and conversion needs
| - | - | - Real-time calculation history allows users to track and verify complex math sequences without re-entering data
| - |
| Complaints | - Recent design changes removed critical features like the running sum display during typing
| - Removal of the running total feature post-update disrupts established user calculation habits
| - Aggressive full-screen advertisement implementation disrupts the core utility and flow of the application
| - | - | - Widget functionality remains inconsistent or slow to respond following the latest update for newer operating systems
| - |
| Requests | - Integration of unit and currency conversion tools to match stock calculator functionality
| - Integration of currency converter and memory functions into the core stock calculator experience
| - Implementation of a one-time payment option to remove advertisements permanently
| - | - | - Native application support for desktop environments would allow for better workflow integration on laptop devices
| - |
| Strategic Intel |
| Strengths | - Live expression parsing enables complex nested math
- Shareable function links drive organic acquisition
- Deep UI customization increases user retention
| - 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 utility density increases daily session frequency
- Formula display functionality provides clarity during complex operations
| - | - | - System-wide keyboard extension replaces standard input workflows
- Minimalist expression-based interface reduces cognitive load
- iCloud history sync creates data-anchored switching costs
| - |
| Weaknesses | - 0.7★ Android-iOS rating gap
- Subscription model alienates legacy users
- Removal of running sum display disrupts core workflow
| - 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
| - Aggressive full-screen ads disrupt core utility
- Annual subscription pricing model perceived as too expensive
| - | - | - Widget performance lag in the latest update
- No desktop version for laptop workflows
- Touch registration issues on rapid input
| - |
| Pricing | freemium | freemium | freemium | free | freemium | free | freemium |
| Momentum | Maintenance | Active | Maintenance | Intense | Intense | Zombie | Intense |
| Update Cadence | 5 versions, 1 majors/6mo, ~192d avg | 5 versions, 3 majors/6mo, ~14d avg | 5 versions, 1 majors/6mo, ~23d avg | 5 versions | 5 versions | 5 versions | 5 versions |
