Unicentric vs Emerald Book
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unicentric
This business application enables users to gather essential information remotely, integrating seamlessly with their organization. It offers optional background location tracking for enhanced data collection, though this may impact battery life.
- Remote data collection
- Organizational integration
- Optional background location tracking
- Vital information gathering
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Integrated with your organization, Unicentric's EVV app allows you to collect vital information while working from anywhere. App also has the optional capability to track location while in the background. Background tracking may affect battery life.
Emerald Book
Discover and support Black-owned businesses nationwide. Find local restaurants, service providers, and more, while contributing to economic growth and tracking the health of the Black economy.
- Discover Black-owned businesses
- Location-based search
- Track economic growth
- Explore by business category
- Constantly updated listings
- Community-focused growth
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Emerald Book is the only comprehensive platform dedicated to tracking, measuring, and growing the Black economy. We provide the tools, data, and resources needed to build economic power and sustainability in Black communities across America. Track Economic Growth The Emerald Economic Index System (EEIS) is the only index system measuring the strength and health of the Black economy. Track business growth in major cities, monitor economic expansion, and see where the Black economy is thriving in real-time. Discover Black-Owned Businesses Use the Black Business Map to find Black-owned businesses near you or anywhere in the country. From restaurants and retail shops to doctors, lawyers, and service providers — discover and support Black entrepreneurs wherever you go. Explore Thriving Black Communities The Black Community Map helps you discover thriving Black cities and towns across America. Find communities where the Black economy is strong and growing — perfect for relocation, investment, or exploration. Find Black-Owned Banks The Black Bank Directory connects you with Black-owned financial institutions near you. Keep your money in the community and help build generational wealth. Know Our History Access the complete History of Black Oppression — understand the past to build a better future. Education is the foundation of economic empowerment. Top 100 Black Businesses Discover the Top 100 Black Businesses in America — the entrepreneurs and companies leading the way in innovation, growth, and community impact. Growth Strategy Learn about Emerald Book's Strategy to Grow the Black Economy — a comprehensive plan to build economic infrastructure, increase visibility, and drive sustainable growth. Register Your Business Are you a Black business owner? Register your business to be featured on the map and become part of the movement to grow the Black economy. Why Emerald Book? - The only platform measuring the Black economy - Real-time location-based discovery - Comprehensive business directory - Economic data and tracking - Community-focused growth tools - Bi-quarterly economic index updates Built for Community, Driven by Data Emerald Book is not just an application — it is economic infrastructure for the Black community. Visibility drives growth. Data drives impact. Together, we build wealth. Download Emerald Book and be part of the movement to track, strengthen, and grow the Black economy.
Screenshots
Verdict
The clearest difference is review sentiment: Emerald Book at 100% against Unicentric's 0%. Emerald Book also leads on rating (5.0 vs 1.8) and update cadence (every 4 days vs every 5 weeks). Unicentric's advantage is ratings volume (11 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Emerald Book holds the better App Store score, 5.0 against 1.8. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews point the same way: 0% of Unicentric's written reviews are positive against 100% of Emerald Book's.
Unicentric ships an update every 5 weeks, Emerald Book every 4 days. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.
| Parameter | Unicentric | Emerald Book |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (11 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 11 — better | 3 |
| Update frequency | Every 5 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 46 MB | 4 MB |
| Age rating | 4+ | 12+ |
| Developer | Unicentric | Emerald Book, Inc. |
Customer experience
Unicentric
Emerald Book
In-app purchases
Unicentric
No in-app purchases
Emerald Book
No in-app purchases









