WSRV vs Jokbo World
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
WSRV
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An engineering evaluation tool for WiSA Connect Mobile Clients Software Development Kit (SDK). Allows developers to test API calls from a mobile device to a WiSA Connect Event Handler. Note this is not a product application for general use.
Jokbo World
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Your family's story disappears in a single generation if no one writes it down. Jokbo World turns the Korean family register β the jokbo β into something you can build, carry, and share from your phone. Add people as cards, connect them, and the generational chart draws itself. β WHO IT'S FOR Β· Anyone who wants to preserve the stories their elders told them Β· People curious about their surname's clan seat (bongwan) and founding ancestor Β· Clan associations and family gatherings that need relationships mapped out Β· Parents who want to show their children where the family came from Β· Anyone digitizing an old paper jokbo before it falls apart β WHAT YOU CAN DO Β· Build your family tree Add a person card, then link parents, spouses, and children. The multi-generation chart lays itself out automatically. Pan and zoom freely, or jump straight back to your own card at any time. Β· Record each person properly Keep Chinese characters, birth and death years, generation rank, titles, photos, and notes together, so a name becomes a life. Β· Export to PDF Save your completed tree as a PDF to print for a family gathering or send to relatives. Β· Search surnames and clan seats Look up Korean surnames and their clan seats to trace where your family began and who its founding ancestor was. Β· Find historical figures See notable figures in history who share your clan lineage. Β· Family community Share tips and family news with other members through the feed and boards. β HOW IT WORKS 1. Sign up, then open the Tree tab at the bottom. 2. Tap [New] to clear the sample tree. 3. Start from yourself and add your parents and children one by one. β PRICING Β· Free for up to 20 people in your tree. Β· Need a larger tree? Upgrade with a one-time in-app purchase. Β· The free version shows a banner ad at the top of the screen. Purchasing a plan removes it. Β· Your tree is saved to your account, so it follows you to a new device. A single name written down today outlives everyone who remembers it. Support: https://jokboworld.com/contact Terms of Use: https://jokboworld.com/terms Privacy Policy: https://jokboworld.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: WSRV at none against Jokbo World's 5. WSRV also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Jokbo World sells 5 one-off in-app purchases. WSRV asks for nothing beyond the download.
| Parameter | WSRV | Jokbo World |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 2 months |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 9 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | WISA Technologies Inc | WON HYO CHOI |
In-app purchases
WSRV
No in-app purchases
Jokbo World
- Yearly Plan (50 people)$9.99
- Premium Yearly (200)$19.99
- Premium Lifetime (400)$39.99
Show 2 moreShow fewer
- Small Clan Yearly (1000)$99.99
- Small Clan Lifetime (2000)$199.99









