# NAUI vs CSUMB SAFE

The clearest difference is update cadence: CSUMB SAFE at every 4 days against NAUI's every 4 months. 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.

NAUI ships an update every 4 months, CSUMB SAFE every 4 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | NAUI | CSUMB SAFE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (48 ratings)](https://appshunter.io/ios/app/naui/id1441033077/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 17.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 120 MB | 29 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NAUI Worldwide](https://appshunter.io/developer/1441033076) | [California State University, Monterey Bay](https://appshunter.io/developer/386364178) |

## What reviewers say

### NAUI

[App page](https://appshunter.io/ios/app/naui/id1441033077)

Access your NAUI certifications, training materials, and dive logs on your mobile device. Find local dive stores, manage students, and utilize dive planning tools. Stay updated with the latest news and events from NAUI Worldwide.

**Highlights:** Access CORE profile and certifications, Digital C-Cards and achievements, Locate NAUI dive stores and professionals, Access eLearning courses, Manage and certify students, Digital dive logs, Dive planning tools

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

**In-app purchases:** none


### CSUMB SAFE

[App page](https://appshunter.io/ios/app/csumb-safe/id6748838032)

**In-app purchases:** none


## Frequently asked questions

### Is NAUI free?

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

### Is CSUMB SAFE free?

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

### Do NAUI or CSUMB SAFE have ads?

Neither NAUI nor CSUMB SAFE shows ads.

### Which is updated more often, NAUI or CSUMB SAFE?

NAUI ships an update every 4 months, and CSUMB SAFE every 4 days. Most recently, NAUI was updated on October 16, 2026 and CSUMB SAFE on October 6, 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.*