# Skill N Depth vs PRO.4 DOD

The clearest difference is in-app purchases: PRO.4 DOD at none against Skill N Depth's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Skill N Depth sells 2 in-app purchases, starting at $19.99 per month. PRO.4 DOD asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Skill N Depth | PRO.4 DOD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/skill-n-depth/id6578446583/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 53 MB | 46 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Skill n Depth AG](https://appshunter.io/developer/1759520611) | [Pro-Bit PRO.4 d.o.o.](https://appshunter.io/developer/1071235078) |

## What reviewers say

### Skill N Depth

[App page](https://appshunter.io/ios/app/skill-n-depth/id6578446583)

This platform digitizes and secures professional records for the occupational diving and marine contracting industry. It allows individuals and organizations to manage skills, certifications, dive logs, and project histories, ensuring compliance and transparency.

**Highlights:** Digital individual profiles with verifiable records, Dive logbook and project history tracking, Contractor and school integration for team management, Hardware connectivity for automated data transfer, Regulatory alignment with international diving standards, Analytics and insights for data-driven decisions, Secure document vault for professional records

**Features:** Apple Wallet, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $19.99 | per month |
| Pro Plan | $199.99 | per year |


### PRO.4 DOD

[App page](https://appshunter.io/ios/app/pro4-dod/id6751571923)

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

**In-app purchases:** none


## Frequently asked questions

### Is Skill N Depth free?

Skill N Depth is free to download, with in-app purchases available.

### Is PRO.4 DOD free?

PRO.4 DOD is free to download, with no in-app purchases.

### Do Skill N Depth or PRO.4 DOD have ads?

Neither Skill N Depth nor PRO.4 DOD shows ads.

### Which is updated more often, Skill N Depth or PRO.4 DOD?

Skill N Depth ships an update every 3 weeks, and PRO.4 DOD every 3 weeks. Most recently, Skill N Depth was updated on September 17, 2026 and PRO.4 DOD on September 24, 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.*