# OSTConf vs Dive Kit

The clearest difference is review sentiment: Dive Kit at 100% against OSTConf's 25%. Dive Kit also leads on update cadence (every 3 days vs every 5 months). OSTConf's advantage is in-app purchases (none vs 3). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Dive Kit sells 3 in-app purchases, starting at $4.99 per month. OSTConf asks for nothing beyond the download.

OSTConf ships an update every 5 months, Dive Kit every 3 days. The most recent releases landed on October 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OSTConf | Dive Kit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 3 MB | 129 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kai-Uwe Sattler](https://appshunter.io/developer/500229044) | [RONNY MAJANI](https://appshunter.io/developer/1842415083) |

## What reviewers say

### 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


### Dive Kit

[App page](https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545)

This app provides comprehensive dive planning tools for various gas mixes, including trimix and CCR dives. It offers a suite of free utilities for gas analysis, usage, and buoyancy calculations, alongside educational content and a certification wallet. The premium version unlocks advanced planning features for complex dives.

**Highlights:** Open-circuit, trimix, and CCR dive planning, Automatic gas switching and unlimited segments, Offline functionality, Free dive utilities (gas analysis, usage, buoyancy), Dive signals and cylinder specifications, Certification wallet, Multi-language support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skuba Tools Pro Monthly | $4.99 | per month |
| Tip | $0.99 | one-time |
| Decompression Planner | $24.99 | one-time |


## Frequently asked questions

### Is OSTConf free?

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

### Is Dive Kit free?

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

### Do OSTConf or Dive Kit have ads?

Neither OSTConf nor Dive Kit shows ads.

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

OSTConf ships an update every 5 months, and Dive Kit every 3 days. Most recently, OSTConf was updated on October 6, 2026 and Dive Kit 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.*