# Decosoft vs Diving Calculator

The clearest difference is in-app purchases: Diving Calculator at none against Decosoft's 8. Diving Calculator also leads on update cadence (weekly vs every 2 weeks) and iOS requirement (12.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Decosoft sells 8 in-app purchases, starting at $3.99 per month. Diving Calculator asks for nothing beyond the download.

Decosoft ships an update every 2 weeks, Diving Calculator weekly. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Decosoft | Diving Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 47 MB | 33 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Decosoft s.r.o.](https://appshunter.io/developer/674555865) | [Alberto Segovia](https://appshunter.io/developer/1724272655) |

## What reviewers say

### Decosoft

[App page](https://appshunter.io/ios/app/decosoft/id6453846218)

Plan your dives with this comprehensive tech diving tool. It offers a user-friendly interface, advanced decompression models, and various dive calculators to ensure safe and enjoyable underwater adventures. Save, share, and prepare for every dive with detailed insights.

**Highlights:** User-friendly dive planning interface, Bühlmann decompression model, Detailed runtime table with graphs, Support for OC and CCR, Multiple dive calculators, Save and share dive plans

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Partner | $3.99 | per month |
| Monthly | $3.99 | per month |
| Annual Partners | $39.99 | per year |
| Ultimate | $39.99 | per year |
| Ultimate Offer | $39.99 | per year |
| Ultimate | $20.99 | one-time |
| Ultimate | $23.99 | one-time |
| Ultimate | $29.99 | one-time |


### Diving Calculator

[App page](https://appshunter.io/ios/app/diving-calculator/id6680148006)

**In-app purchases:** none


## Frequently asked questions

### Is Decosoft free?

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

### Is Diving Calculator free?

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

### Do Decosoft or Diving Calculator have ads?

Neither Decosoft nor Diving Calculator shows ads.

### Which is updated more often, Decosoft or Diving Calculator?

Decosoft ships an update every 2 weeks, and Diving Calculator weekly. Most recently, Decosoft was updated on September 21, 2026 and Diving Calculator on September 18, 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.*