# DiveCore vs Fathom Dive Planner

The clearest difference is update cadence: Fathom Dive Planner at daily against DiveCore's every 4 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DiveCore sells 3 in-app purchases, starting at $4.99 per month and Fathom Dive Planner sells 2 in-app purchases, starting at $6.99 per year. Whichever you choose, the download price is not the number that matters.

DiveCore ships an update every 4 days, Fathom Dive Planner daily. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | DiveCore | Fathom Dive Planner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Daily** |
| Monetization | Freemium | — |
| Size | 23 MB | 8 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [juseong kim](https://appshunter.io/developer/1875156558) | [Total Immersion](https://appshunter.io/developer/408473253) |

## What reviewers say

### DiveCore

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

This app transforms your Apple Watch Ultra into a professional dive computer. It uses on-device AI to analyze your dives, providing insights into safety, efficiency, and consistency. Features include real-time decompression modeling, estimated dive routes, and a no-fly timer.

**Highlights:** Bühlmann ZHL-16C decompression model, Real-time NDL + decompression ceiling display, Estimated dive route visualization, No-fly timer with Live Activity, On-device AI dive scoring, Dive log with iCloud sync, Underwater color correction

**Features:** Apple Watch app

**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 |


### Fathom Dive Planner

[App page](https://appshunter.io/ios/app/fathom-dive-planner/id6775766574)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fathom Premium - Annual | $6.99 | per year |
| Fathom Premium - Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is DiveCore free?

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

### Is Fathom Dive Planner free?

Fathom Dive Planner is free to download, with in-app purchases available.

### Do DiveCore or Fathom Dive Planner have ads?

Neither DiveCore nor Fathom Dive Planner shows ads.

### Which is updated more often, DiveCore or Fathom Dive Planner?

DiveCore ships an update every 4 days, and Fathom Dive Planner daily. Most recently, DiveCore was updated on October 8, 2026 and Fathom Dive Planner on September 30, 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.*