| Core Identity |
| Developer | Tue Nguyen Minh | nakhon phagdeechat | nakhon phagdeechat | David Eubank | Hasa Inc. | Cider Software LLC | DOUBLE U s.r.o. | WAGO Kontakttechnik GmbH & Co. KG | BMAC INFOTECH | MKS BETON LLC |
| Category | Utilities | Utilities | Utilities | Photo & Video | Productivity | Utilities | Utilities | Reference | Tools | Business |
| Platform | iOS, Android | iOS | iOS | iOS, Android | iOS, Android | iOS | iOS, Android | iOS, Android | Android | Android |
| Store Metrics |
| Rating | 4.1 / 5 | 4.2 / 5 | 2.3 / 5 | 4.9 / 5 | 4.7 / 5 | 4.8 / 5 | 4.7 / 5 | 4.8 / 5 | 0.0 / 5 | 0.0 / 5 |
| Ratings Count | 10,387 | 5 | 26 | 217 | 450 | 2,033 | 288 | 12 | 0 | 0 |
| Price | Free | $2.99 | Free | $29.99 | Free | $9.99 | Free | Free | Free | Free |
| Release Date | Apr 11, 2013 | Aug 27, 2010 | Mar 4, 2011 | Dec 20, 2018 | Dec 9, 2016 | Dec 26, 2013 | Nov 9, 2018 | Apr 1, 2025 | Mar 5, 2026 | Mar 26, 2026 |
| Last Updated | Nov 14, 2025 | Apr 25, 2026 | May 5, 2026 | May 18, 2026 | Apr 14, 2026 | Mar 22, 2026 | Apr 27, 2026 | May 11, 2026 | Mar 6, 2026 | Apr 5, 2026 |
| Sentiment & Reviews |
| Sentiment | negative | - | - | excellent | positive | positive | positive | positive | - | - |
| Score | 25/100 | - | - | 92/100 | 75/100 | 85/100 | 82/100 | 80/100 | - | - |
| Praises | - Visual camera overlay tools provide accurate measurements for quick home improvement tasks
| - | - | - Technical cinematography data provides essential decision support for professional camera crews and production staff
| - Scientific LSI calculation tool provides accurate water balance guidance for pool owners
| - Calculation history tape provides reliable verification for long strings of business numbers
| - Simplified time math calculations allow users to manage work schedules and logbooks without manual conversion
| - Utility of offline calculators for field work
| - | - |
| Complaints | - Aggressive monetization tactics restrict core functionality behind paywalls immediately after installation
- Excessive advertisement frequency disrupts the user experience during basic measurement tasks
| - | - | - Lack of live camera integration forces reliance on static diagrams for field of view planning
| - Lack of persistent data storage forces users to re-enter pool volume and settings
| - Widget functionality fails to trigger correctly on iPadOS and iOS devices
| - Aggressive advertising and subscription renewal issues disrupt the user experience for those who paid for ad removal
| - Navigation friction in the product catalog
| - | - |
| Requests | - Ability to import and measure angles from existing photos in the free version
| - | - | - Live camera view integration for real-time shot framing and lens visualization
| - Cloud-based profile storage to save pool volume and historical chemical test data
| - Apple Watch integration requested to enable quick calculations from the wrist
| - Pure hours and minutes display format requested to replace the default days, hours, and minutes structure
| - | - | - |
| Strategic Intel |
| Strengths | - Camera-based measurement mechanism enables immediate real-world utility
- Plumb Bob mode provides specialized retention for construction tasks
| - | - | - Emmy-recognized technical accuracy sustains professional adoption
- 2,000+ camera format library creates high switching costs
| - LSI calculator utility builds brand authority for Hasa chemical sales
- Academy integration creates a B2B training pipeline for professionals
| - Ad-free business model increases long-term user trust
- History tape functionality creates high switching costs for professionals
| - Specialized time-math logic eliminates decimal-conversion errors
- Memory keys solve professional work-hour tracking pain points
| - Offline-first architecture ensures utility in remote job sites
- Image-based product search reduces hardware procurement friction
| - Offline-first architecture enables utility in remote field environments without cellular connectivity.
| - |
| Weaknesses | - 0.13 rating gap between iOS and Android
- Aggressive paywall gating triggers high-churn sentiment
- Excessive ad frequency disrupts basic measurement workflows
| - | - | - $29.99 price point exceeds category median
- Lack of live camera overlays limits modern workflow integration
| - No cloud-based data persistence forces manual re-entry of pool settings
- Calculator interface lacks precision for mobile users
| - Widget functionality failures erode premium user utility
- Intrusive rating prompts drive negative sentiment
| - Persistent ads for paying users erode trust
- Lack of split-screen support limits multitasking
| - Product catalog navigation friction reported in reviews
- Lack of multi-unit site management for large-scale contractors
| - Absence of a verified chemical database limits trust in high-stakes application scenarios.
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| Pricing | freemium | paid | free | paid | free | paid | free | free | freemium | free |
| Momentum | Maintenance | - | - | Active | Maintenance | - | Maintenance | Maintenance | - | - |
| Update Cadence | 2 versions, 1 majors/6mo, ~61d avg | - | - | 5 versions, 4 majors/6mo, ~24d avg | 2 versions, ~33d avg | - | 2 versions, 2 majors/6mo, ~203d avg | 2 versions, ~11d avg | - | - |
