| Core Identity |
| Developer | Gammon Technical Products | Ookla | Google | Impala Studios | GRIMLAX TRADE, S.L. |
| Category | Utilities | Utilities | Utilities | Utilities | Utilities |
| Platform | Android, iOS | iOS, Android | iOS, Android | Android, iOS | iOS, Android |
| Store Metrics |
| Rating | 0.0 / 5 | 4.5 / 5 | 4.9 / 5 | 4.7 / 5 | 4.6 / 5 |
| Ratings Count | 0 | 27,674 | 1,084,566 | 1,715,926 | 191,526 |
| Price | USD9.99 | Free | Free | Free | Free |
| Release Date | Apr 8, 2025 | Jan 4, 2009 | Sep 20, 2010 | Oct 22, 2010 | Oct 30, 2023 |
| Last Updated | Jun 20, 2025 | Apr 28, 2026 | Jan 5, 2026 | Apr 23, 2026 | Apr 15, 2026 |
| Sentiment & Reviews |
| Sentiment | mixed | mixed | mixed | mixed | - |
| Score | 55/100 | 35/100 | 55/100 | 45/100 | - |
| Praises | - Simple and accurate calculation logic provides reliable utility for everyday math tasks
| - Consistent and reliable network speed measurement utility for daily connectivity monitoring
| - Offline functionality allows users to generate authentication codes without active cellular or data service
| - All-in-one utility including scientific functions and unit converters provides significant daily value
| - |
| Complaints | - Recent design changes removed essential quick-answer displays and altered the decimal placement
| - Aggressive ad placement and subscription prompts obscure test results and degrade user experience
| - Account lockout risks arise when users fail to manually migrate tokens before replacing devices
| - Removal of the running total feature post-update disrupts established user calculation habits
| - |
| Requests | - Integration of financial conversion tools like currency and unit converters into the calculator
| - Reintroduction of legacy throughput charts to support advanced network diagnostic workflows
| - Cloud-based backup and synchronization of tokens to prevent permanent account loss
| - Integration of currency converter and memory functions into the core stock calculator experience
| - |
| Strategic Intel |
| Strengths | - Specialized fuel-density algorithms function as a B2B distribution barrier into aviation logistics partnerships.
| - 55-billion-test global dataset creates a proprietary benchmark moat
- Downdetector integration provides unique real-time outage utility
- Global server network ensures high-accuracy connectivity data
| - Offline TOTP generation ensures reliability in all network environments.
- System-level Google Account integration simplifies onboarding.
- Biometric privacy screen reinforces security-first brand authority.
| - 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 | - $9.99 iOS price point sits above the $0-4.99 utility median, creating conversion friction.
| - Aggressive interstitial ad-placement blocks test results
- 0.05★ rating gap between iOS and Android platforms
- Removal of legacy throughput charts limits advanced diagnostic utility
| - Manual token migration workflow causes high-frequency lockout complaints.
- Synchronization errors post-update prevent third-party authentication.
- Intrusive review prompts disrupt core authentication 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
| - |
| Pricing | paid | freemium | free | freemium | subscription |
| Momentum | Maintenance | Active | Maintenance | Active | Intense |
| Update Cadence | 2 versions, 1 majors/6mo, ~276d avg | 5 versions, 1 majors/6mo, ~12d avg | 5 versions, 1 majors/6mo, ~199d avg | 5 versions, 3 majors/6mo, ~14d avg | 5 versions |
