J vs Dive Sites 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
J
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Navigate Japan like a local with the easiest way to convert addresses to Mapcode for GPS navigation. Perfect for travelers using rental cars in Japan, this app instantly converts Japanese addresses into Mapcode format that works with most car navigation systems. What is Mapcode? Mapcode is a location code system widely used in Japanese car navigation systems. Unlike traditional addresses, Mapcode provides a simple, short code that pinpoints exact locations. Key Features - Quick Address to Mapcode Conversion: Enter any Japanese address and get instant Mapcode - One-Tap Copy & Share: Easy integration with navigation apps - Multi-Language Support: Japanese, English, Korean, Simplified & Traditional Chinese - Conversion History: Quick access to frequently used locations - Clean Interface: Designed for travelers on the go Why Use This App? - Essential for rental car users in Japan - Works with most Japanese car navigation systems - Save time finding destinations - No complicated address input needed - Perfect for tourists and business travelers User Experience - Simple, intuitive design - Fast and accurate conversions - Dark mode support - Works offline for viewing history - Free with a small banner ad only, no full-screen ads Supported Locations All regions in Japan including Tokyo, Osaka, Kyoto, Hokkaido, Okinawa, and more. Privacy & Security - No user account required - History stored locally on your device - Your location data stays private Start your Japan adventure with confidence. Download now and navigate more easily! Devices: iPhone, iPad Languages: Japanese, English, Korean, Simplified Chinese, Traditional Chinese
Dive Sites 3D
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SiamDive is your dive-trip planning companion for Thailand and beyond. - Search and compare dive trips, liveaboards, resorts and dive centers - Ark AI assistant recommends trips that match your interests and budget - Build your own trip plan, book, and chat with our team in the app - Explore dive sites in a 3D map with coral and marine life - even offline Dive with confidence. Plan easily. All in one app.
Screenshots
Verdict
The clearest difference is ads: Dive Sites 3D at none against J's shown. Dive Sites 3D also leads on update cadence (every 6 days vs every 2 months). On price, in-app purchases, device support and iOS requirement 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.
J ships an update every 2 months, Dive Sites 3D every 6 days. The most recent releases landed on September 18, 2026 and September 25, 2026 respectively.
| Parameter | J | Dive Sites 3D |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 223 MB |
| Age rating | 4+ | 4+ |
| Developer | Peppertree | SIAM DIVE CENTER COMPANY LIMITED |
In-app purchases
J
No in-app purchases
Dive Sites 3D
No in-app purchases
