# Dive Log vs OSTConf

The clearest difference is review sentiment: Dive Log at 84% against OSTConf's 25%. Dive Log also leads on update cadence (monthly vs every 5 months) and iOS requirement (14.0 vs 16.0). OSTConf's advantage is price (Free vs $14.99) and in-app purchases (none vs 13). On ads and device support there is nothing between them.

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

Dive Log ships an update monthly, OSTConf every 5 months. The most recent releases landed on September 26, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Dive Log | OSTConf |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[4.7 (106 ratings)](https://appshunter.io/ios/app/dive-log/id301049600/reviews)** | — |
| Number of ratings | **106** | — |
| Positive reviews | **83.7% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 3 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Kai-Uwe Sattler](https://appshunter.io/developer/500229044) |

## What reviewers say

### Dive Log

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

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 |


### OSTConf

[App page](https://appshunter.io/ios/app/ostconf/id1404182943)

Configure your dive computer settings and parameters wirelessly. Update date, time, custom text, gas mixes, and deco settings. Compatible with recent Bluetooth-enabled dive computers.

**Highlights:** Read and modify settings, Update date and time, Set custom text, Configure gas mixes, Set deco parameters, Upgrade firmware, Retrieve device information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dive Log free?

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

### Is OSTConf free?

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

### Do Dive Log or OSTConf have ads?

Neither Dive Log nor OSTConf shows ads.

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

Dive Log ships an update monthly, and OSTConf every 5 months. Most recently, Dive Log was updated on September 26, 2026 and OSTConf on September 19, 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.*