# Snorkeling Mermaid vs DiveCore

The clearest difference is review sentiment: DiveCore at 100% against Snorkeling Mermaid's 50%. DiveCore also leads on price (Free vs $3.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

DiveCore is free to download; Snorkeling Mermaid costs $3.99 up front. Snorkeling Mermaid sells 2 in-app purchases, starting at $1.99 per month and DiveCore sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Snorkeling Mermaid ships an update weekly, DiveCore every 4 days. The most recent releases landed on November 8, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Snorkeling Mermaid | DiveCore |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 26 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [SUNGUK CHO](https://appshunter.io/developer/1781224128) | [Juseong Kim](https://appshunter.io/developer/1875156558) |

## What reviewers say

### Snorkeling Mermaid

[App page](https://appshunter.io/ios/app/snorkeling-mermaid/id6738918940)

This app provides essential data for snorkeling, including dive time, current and maximum depth, water temperature, and direction. It enhances safety and enjoyment for underwater activities.

**Highlights:** Underwater timer, Current and maximum depth display, Ascending/descending indicator, Water temperature display, In-water compass, Apple Watch integration

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Annual Subscription | $7.99 | per year |


### DiveCore

[App page](https://appshunter.io/ios/app/divecore-dive-computer/id6758817797)

This app transforms your Apple Watch Ultra into a comprehensive dive computer, offering real-time decompression data, freediving modes, and estimated dive routes. It features AI-powered dive analysis and a detailed logbook, syncing seamlessly with its iPhone companion app for post-dive review and planning.

**Highlights:** Bühlmann ZHL-16C decompression model, Freediving modes (CWT, STA, DYN), Estimated dive route with GPS fixes, Live Activity no-fly timer, On-device AI dive analysis, iCloud synchronized dive log, Underwater photo color correction

**Features:** Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DiveCore Pro (Monthly) | $4.99 | per month |
| DiveCore Pro (Yearly) | $29.99 | per year |
| DiveCore Pro 1-Day Pass | $2.99 | one-time |


## Frequently asked questions

### Is Snorkeling Mermaid free?

Snorkeling Mermaid costs $3.99, and also offers in-app purchases.

### Is DiveCore free?

DiveCore is free to download, with in-app purchases available.

### Do Snorkeling Mermaid or DiveCore have ads?

Neither Snorkeling Mermaid nor DiveCore shows ads.

### Which is updated more often, Snorkeling Mermaid or DiveCore?

Snorkeling Mermaid ships an update weekly, and DiveCore every 4 days. Most recently, Snorkeling Mermaid was updated on November 8, 2026 and DiveCore on November 7, 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.*