| Core Identity |
| Developer | Vishal Patel | xNeat.com | Impala Studios | Brainwash Inc. | Mustafa Kulac |
| Category | Utilities | Utilities | Utilities | Utilities | Utilities |
| Platform | Android, iOS | iOS, Android | Android, iOS | iOS | iOS |
| Store Metrics |
| Rating | 4.5 / 5 | 4.6 / 5 | 4.6 / 5 | 0.0 / 5 | 0.0 / 5 |
| Ratings Count | 3,569 | 9,633 | 357,028 | 0 | 0 |
| Price | Free | Free | Free | Free | $3.99 |
| Release Date | Oct 10, 2018 | Feb 5, 2010 | Dec 21, 2011 | Dec 21, 2017 | Mar 16, 2026 |
| Last Updated | Oct 12, 2022 | May 4, 2026 | May 4, 2026 | Jan 3, 2018 | Apr 13, 2026 |
| Sentiment & Reviews |
| Sentiment | mixed | mixed | positive | - | - |
| Score | 45/100 | 55/100 | 80/100 | - | - |
| Praises | - Accurate age calculation functionality provides significant utility for professional social workers and business users
- Minimalist and lightweight interface design allows for quick and efficient date processing tasks
| - Simple and clean interface design makes daily calculations feel fast and efficient
- Comprehensive scientific and graphing functions provide value for students and professionals
| | - | - |
| Complaints | - Navigation button overlap prevents users from accessing the application interface on modern Android devices
- Intrusive and loud video advertisements disrupt the user experience during time-sensitive calculation tasks
| - Removal of real-time running balance display during long calculations disrupts user workflow
- Aggressive monetization and pay-to-use features frustrate long-term loyal users
| | - | - |
| Requests | - Cloud synchronization or account login functionality to enable data recovery across multiple devices
| - Restoration of advanced number base conversions like binary and hexadecimal
| | - | - |
| Strategic Intel |
| Strengths | - High-precision calculation engine sustains professional utility for social workers
- Lightweight app footprint enables rapid session starts on low-end hardware
| - Equation-result simultaneous display [UI/UX]
- Minimalist aesthetic [Brand]
- Scientific function depth [Utility]
| - History tape mechanism functions as a retention loop for expense tracking
- High-visibility UI reduces cognitive load for casual users
| - Large-font interface provides immediate accessibility for users who find complex calculators overwhelming.
| - Offline-only architecture ensures data privacy
- Specialized asset tracking for warranties creates a unique utility niche
|
| Weaknesses | - Navigation button overlap on Android blocks core functionality
- Intrusive video ads trigger negative sentiment in professional settings
- Lack of cloud sync forces manual data entry on device switches
| - Subscription-gate migration [Monetization]
- Missing landscape mode [Usability]
- Removed base conversion tools [Feature parity]
| - No IAP or subscription gates limits revenue per user
- Lack of graphing features drives power-user churn to competitors
| - No updates since 2018 creates compatibility risks.
- Lack of calculation history forces manual re-entry.
| - High $3.99 entry barrier for casual users
- Lacks multi-purpose utility of category-leading calculators
|
| Pricing | free | freemium | free | free | paid |
| Momentum | Zombie | Maintenance | Maintenance | - | Maintenance |
| Update Cadence | 2 versions, ~1089d avg | 2 versions, ~42d avg | 2 versions, 1 majors/6mo, ~42d avg | - | 1 versions |
