# Octavius vs DeepSix Dive Log

The clearest difference is in-app purchases: Octavius at none against DeepSix Dive Log's 4. Octavius also leads on iOS requirement (16.6 vs 18.0). DeepSix Dive Log's advantage is update cadence (weekly vs monthly) and device support (5 vs 2). On price and ads there is nothing between them.

Both are free to download. DeepSix Dive Log sells 4 in-app purchases, starting at $0.99 per month. Octavius asks for nothing beyond the download.

Octavius ships an update monthly, DeepSix Dive Log weekly. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Octavius | DeepSix Dive Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/deepsix-dive-log/id6760018643/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 21 MB | 79 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Yoash Offer](https://appshunter.io/developer/769920342) | [Richard Bollar](https://appshunter.io/developer/1864304955) |

## What reviewers say

### Octavius

[App page](https://appshunter.io/ios/app/octavius/id1660568386)

This app helps scuba divers calculate the optimal amount of weight needed for safe underwater dives. It provides essential calculations to ensure proper buoyancy and a comfortable diving experience.

**Highlights:** Weight calculation for scuba diving, Optimal buoyancy guidance, Underwater dive planning, User-friendly interface

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

**In-app purchases:** none


### DeepSix Dive Log

[App page](https://appshunter.io/ios/app/deepsix-dive-log/id6760018643)

Record and relive your underwater adventures with detailed dive logs. Explore curated wrecks and wonders, identify marine life with AI, and restore true colors to your photos. Plan future dives with comprehensive environmental data.

**Highlights:** Detailed dive path mapping, Curated wreck and wonder catalog, On-device marine species identification, Underwater photo color correction, Environmental conditions planner, Dive computer data import

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plankton (Monthly) | $0.99 | per month |
| Plankton (Yearly) | $9.99 | per year |
| Whale | $49.99 | one-time |
| Megalodon | $99.99 | one-time |


## Frequently asked questions

### Is Octavius free?

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

### Is DeepSix Dive Log free?

DeepSix Dive Log is free to download, with in-app purchases available.

### Do Octavius or DeepSix Dive Log have ads?

Neither Octavius nor DeepSix Dive Log shows ads.

### Which is updated more often, Octavius or DeepSix Dive Log?

Octavius ships an update monthly, and DeepSix Dive Log weekly. Most recently, Octavius was updated on October 15, 2026 and DeepSix Dive Log on October 28, 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.*