| Core Identity |
| Developer | Armchair Engineering | Tim O's Studios, LLC | Financept | ChuChu Train Productions | 7th Gear | Impala Studios | FYI Mobileware, Inc. | Leticia Vila |
| Category | Utilities | Reference | Finance | Finance | Utilities | Utilities | Finance | Utilities |
| Platform | iOS | iOS, Android | iOS, Android | iOS, Android | iOS, Android | Android, iOS | iOS, Android | iOS, Android |
| Store Metrics |
| Rating | 4.9 / 5 | 4.9 / 5 | 4.8 / 5 | 4.7 / 5 | 4.8 / 5 | 4.7 / 5 | 4.7 / 5 | 0.0 / 5 |
| Ratings Count | 105 | 9,015 | 58,517 | 12,143 | 4,260 | 1,715,926 | 33 | 0 |
| Price | Free | Free | Free | Free | $0.99 | Free | Free | Free |
| Release Date | Dec 14, 2013 | Jul 17, 2012 | Jun 10, 2012 | Apr 12, 2011 | May 2, 2011 | Oct 22, 2010 | Aug 25, 2012 | Apr 8, 2022 |
| Last Updated | Dec 5, 2019 | Mar 1, 2022 | Jan 25, 2026 | Apr 9, 2026 | Dec 9, 2020 | Apr 23, 2026 | Dec 16, 2016 | Apr 8, 2022 |
| Sentiment & Reviews |
| Sentiment | - | - | negative | - | mixed | mixed | - | - |
| Score | - | - | 35/100 | - | 55/100 | 45/100 | - | - |
| Praises | - | - | - Simple and effective tip calculation logic provides immediate value for restaurant diners
| - | - 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
| - | - |
| Complaints | - | - | - Aggressive and unskippable advertisement implementation disrupts the core utility of the app
| - | - 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
| - | - |
| Requests | - | - | - Addition of a rounding feature to simplify final tip and total amounts
| - | - 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
| - | - |
| Strategic Intel |
| Strengths | - High 4.89-star rating baseline sustains trust with new users
| - | - Modern theme-customizable interface provides visual differentiation
- Flexible tax-toggle logic enables accurate tipping across varying local customs
| - | - 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
| - | - |
| Weaknesses | - No feature updates since 2019 creates a perception of abandonment
- Ad-heavy interface drives churn in a competitive utility market
| - | - Unskippable full-screen ads block core utility
- Deceptive subscription pricing triggers refund surges
- Recent update broke bill-scanning functionality
| - | - 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
| - | - |
| Pricing | freemium | free | free | free | paid | freemium | free | free |
| Momentum | Zombie | Zombie | - | Intense | Zombie | Active | Intense | - |
| Update Cadence | 5 versions | 5 versions | - | 5 versions | 5 versions, 3 majors/6mo, ~897d avg | 5 versions, 3 majors/6mo, ~14d avg | 5 versions | - |
