# Unicentric vs Emerald Book

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.

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.

## The numbers

| Metric | Unicentric | Emerald Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (11 ratings)](https://appshunter.io/ios/app/unicentric/id1479704785/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/emerald-book/id6759741755/reviews)** |
| Number of ratings | **11** | 3 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Free | Free |
| Size | 46 MB | 4 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Unicentric](https://appshunter.io/developer/1479704784) | [Emerald Book, Inc.](https://appshunter.io/developer/1880452108) |

## What reviewers say

### Unicentric

[App page](https://appshunter.io/ios/app/unicentric/id1479704785)

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.

**Highlights:** Remote data collection, Organizational integration, Optional background location tracking, Vital information gathering

**Features:** macOS Compatibility

**In-app purchases:** none


### Emerald Book

[App page](https://appshunter.io/ios/app/emerald-book/id6759741755)

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.

**Highlights:** Discover Black-owned businesses, Location-based search, Track economic growth, Explore by business category, Constantly updated listings, Community-focused growth

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Unicentric free?

Unicentric is free to download, with no in-app purchases.

### Is Emerald Book free?

Emerald Book is free to download, with no in-app purchases.

### Which has better reviews, Unicentric or Emerald Book?

Emerald Book is rated higher. Unicentric averages 1.8 out of 5 from 11 ratings, while Emerald Book averages 5.0 from 3 ratings.

### Do Unicentric or Emerald Book have ads?

Neither Unicentric nor Emerald Book shows ads.

### Which is updated more often, Unicentric or Emerald Book?

Unicentric ships an update every 5 weeks, and Emerald Book every 4 days. Most recently, Unicentric was updated on October 21, 2026 and Emerald Book on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*