| Core Identity |
| Developer | ZOOMO Inc. | Apple | Ca Li Sa | Aexol Studio | LIIP Studio | Hyeoseong Hwang | Infotoo International Limited | Tue Nguyen Minh | Orange View | Mike Opper |
| Category | Productivity | Utilities | Utilities | Utilities | Utilities | Photo & Video | Lifestyle | Utilities | Utilities | Photo & Video |
| Platform | Android, iOS | iOS | iOS | iOS | iOS | iOS, Android | iOS, Android | iOS, Android | iOS | iOS |
| Store Metrics |
| Rating | 4.0 / 5 | 3.1 / 5 | 1.7 / 5 | 3.4 / 5 | 4.5 / 5 | 3.0 / 5 | 1.8 / 5 | 4.3 / 5 | 5.0 / 5 | 0.0 / 5 |
| Ratings Count | 1 | 1,702 | 3 | 404 | 610 | 20 | 12 | 35,046 | 1 | 0 |
| Price | Free | Free | Free | $2.99 | Free | Free | Free | Free | Free | Free |
| Release Date | May 29, 2015 | Jul 27, 2018 | Mar 31, 2018 | Sep 9, 2017 | Nov 12, 2024 | Apr 7, 2016 | Nov 23, 2012 | Mar 28, 2013 | Mar 22, 2026 | Apr 21, 2026 |
| Last Updated | Oct 20, 2024 | Dec 12, 2025 | Apr 2, 2018 | Mar 2, 2019 | May 9, 2026 | Oct 6, 2020 | May 11, 2026 | Jan 2, 2026 | Apr 29, 2026 | Apr 21, 2026 |
| Sentiment & Reviews |
| Sentiment | excellent | mixed | - | - | mixed | mixed | negative | negative | - | - |
| Score | 85/100 | 50/100 | - | - | 70/100 | 55/100 | 30/100 | 35/100 | - | - |
| Praises | - Simple and functional design provides a reliable tool for everyday measurement tasks
- Ad-free experience and lack of aggressive monetization build strong user trust
| - Ad-free and native experience
| - | - | - Automated photo categorization
| - High-resolution image retrieval capabilities provide significant utility for professional and creative research tasks
| - | - Simple and straightforward interface allows for immediate measurement without complex setup or calibration
| - | - |
| Complaints | - Camera activation failures on specific hardware prevent the calibration feature from functioning
- Visual obstruction of the zero mark makes precise initial measurements difficult
| - Lack of persistent storage
- AR instability
| - | - | - Subscription gating of basic features
| - Inaccurate search results and failure to identify famous subjects frustrate users during standard queries
| | - Aggressive paywalling of basic measurement units like inches forces users into unwanted subscription models
| - | - |
| Requests | - Adjusting the ruler start position to improve visibility of the first measurement
| | - | - | - | - Expanded media support to include video-based image searching for more comprehensive identification results
| - | - Implementation of a one-time purchase option instead of recurring weekly subscription fees
| - | - |
| Strategic Intel |
| Strengths | - Clean, ad-free utility design sustains high user trust
- Calibration-by-object mechanism provides high-accuracy utility without proprietary hardware
| - Native iOS system-level integration ensures stability
- Ad-free, zero-cost model sustains brand trust
| - | - | - AI-driven duplicate detection [version: latest]
- iCloud-specific storage management [version: latest]
| - Single-purpose utility reduces cognitive load for identification tasks
- One-time purchase model provides clear alternative to subscription-only rivals
| - Proprietary Certi-mark visual recognition mechanism provides a verifiable security layer for brand owners.
| - Immediate, no-calibration interface lowers entry friction
- Camera-based measurement expands utility beyond screen limits
- Broad international category presence drives organic discovery
| - | - On-device processing ensures privacy-conscious user retention
- One-time purchase model lowers barrier to entry
|
| Weaknesses | - Camera initialization failures on specific hardware
- Zero-mark label placement obscures initial measurement precision
| - No persistent measurement history log
- 3.09-star rating indicates core accuracy frustration
| - | - | - Subscription-gated privacy features [pricing: subscription]
- 0.7★ rating gap vs established category leaders [metric: rating]
| - 0.7★ rating gap between Android and iOS versions
- Forced Cyrillic search results for non-Russian users
- Aggressive ad-jamming complaints in recent feedback
| - 1.75-star iOS rating indicates severe platform-specific stability issues.
- High-friction authentication flow causes user churn.
| - Weekly subscription gate for basic units
- Inaccurate measurement results vs physical tools
- Intrusive advertising degrades measurement flow
| - | - 100-item free-tier cap limits viral growth
- Lack of cloud-sync prevents multi-device utility
|
| Pricing | freemium | free | free | paid | subscription | freemium | free | freemium | free | freemium |
| Momentum | Maintenance | Zombie | - | Zombie | Zombie | Zombie | Maintenance | Maintenance | - | Zombie |
| Update Cadence | 2 versions, ~26d avg | 1 versions | - | 5 versions | 1 versions | 2 versions, ~1997d avg | 2 versions, ~1d avg | 2 versions, 1 majors/6mo, ~90d avg | - | 1 versions |
