# Dive Log vs Octavius

The clearest difference is price: Octavius at Free against Dive Log's $14.99. Octavius also leads on in-app purchases (none vs 13) and review sentiment (100% vs 84%). Dive Log's advantage is chart position (#200 vs unranked). On update cadence, ads, device support and iOS requirement there is nothing between them.

Octavius is free to download; Dive Log costs $14.99 up front. Dive Log sells 11 one-off in-app purchases. Octavius asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Dive Log | Octavius |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[4.7 (106 ratings)](https://appshunter.io/ios/app/dive-log/id301049600/reviews)** | — |
| Number of ratings | **106** | — |
| Positive reviews | 83.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#200** | — |
| Size | 33 MB | 21 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Yoash Offer](https://appshunter.io/developer/769920342) |

## What reviewers say

### Dive Log

[App page](https://appshunter.io/ios/app/dive-log/id301049600)

**Currently charting:** #200 Top Paid · Sports (US App Store)

Log your SCUBA dives with detailed information, including GPS coordinates and dive buddy details. Supports metric and imperial units, and integrates with desktop software for comprehensive dive history management.

**Highlights:** SCUBA diving logbook, GPS coordinate capture, Dive buddy integration, Dive data and statistics, Metric and Imperial units, Dive computer data import, Bluetooth LE transfer

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Suunto Bluetooth Download | $2.99 | one-time |
| Mares Bluetooth Download | $2.99 | one-time |
| Crest Bluetooth Download | $2.99 | one-time |
| Shearwater Download | $2.99 | one-time |
| bluebuddy Download | $2.99 | one-time |
| SCUBAPRO Download | $2.99 | one-time |
| Pelagic Bluetooth Download | $2.99 | one-time |
| Cressi Bluetooth Download | $2.99 | one-time |
| Ratio Bluetooth Download | $2.99 | one-time |
| Halcyon Bluetooth Download | $2.99 | one-time |
| DCbuddy Support | $4.99 | one-time |


### 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


## Frequently asked questions

### Is Dive Log free?

Dive Log costs $14.99, and also offers in-app purchases.

### Is Octavius free?

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

### Do Dive Log or Octavius have ads?

Neither Dive Log nor Octavius shows ads.

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

Dive Log ships an update monthly, and Octavius monthly. Most recently, Dive Log was updated on October 18, 2026 and Octavius on October 15, 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.*