# J vs Dive Sites 3D

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.

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.

## The numbers

| Metric | J | Dive Sites 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Size | 34 MB | 223 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peppertree](https://appshunter.io/developer/1828600653) | [SIAM DIVE CENTER COMPANY LIMITED](https://appshunter.io/developer/6787005048) |

## What reviewers say

### J

[App page](https://appshunter.io/ios/app/j-mapcode-japan-map-converter/id6757125059)

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

**In-app purchases:** none


### Dive Sites 3D

[App page](https://appshunter.io/ios/app/dive-sites-3d/id6787005046)

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

**In-app purchases:** none


## Frequently asked questions

### Is J free?

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

### Is Dive Sites 3D free?

Dive Sites 3D is free to download, with no in-app purchases.

### Do J or Dive Sites 3D have ads?

J shows ads; Dive Sites 3D does not.

### Which is updated more often, J or Dive Sites 3D?

J ships an update every 2 months, and Dive Sites 3D every 6 days. Most recently, J was updated on September 18, 2026 and Dive Sites 3D on September 25, 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.*