# hk.co vs SJWorld

The clearest difference is update cadence: SJWorld at every 11 days against hk.co's monthly. hk.co's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

hk.co ships an update monthly, SJWorld every 11 days. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | hk.co | SJWorld |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (7 ratings)](https://appshunter.io/ios/app/hkco/id1010715749/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free | — |
| Size | 65 MB | 48 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HARI KRISHNA EXPORTS PVT. LTD.](https://appshunter.io/developer/1198183476) | [Shivam Jewels](https://appshunter.io/developer/1418412656) |

## What reviewers say

### hk.co

[App page](https://appshunter.io/ios/app/hkco/id1010715749)

This app simplifies the diamond buying process with exclusive features like quick search, voice commands, and detailed diamond information. It offers a streamlined experience for customers to browse, select, and purchase diamonds anytime, anywhere, with additional services like concierge support and appointment scheduling.

**Highlights:** Quick Diamond Search, Voice Search ('Hello HK'), Swipe to Select, X-Ray Diamond Details, Special Diamond Price Calculator, Concierge Service, 24x7 Live Online Inventory

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

**In-app purchases:** none


### SJWorld

[App page](https://appshunter.io/ios/app/sjworld/id6743208170)

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

**In-app purchases:** none


## Frequently asked questions

### Is hk.co free?

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

### Is SJWorld free?

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

### Do hk.co or SJWorld have ads?

Neither hk.co nor SJWorld shows ads.

### Which is updated more often, hk.co or SJWorld?

hk.co ships an update monthly, and SJWorld every 11 days. Most recently, hk.co was updated on October 1, 2026 and SJWorld on October 3, 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.*