# DiveCodes vs Cylindex

The clearest difference is in-app purchases: DiveCodes at none against Cylindex's 1. Cylindex's advantage is update cadence (every 6 weeks vs every 23 months) and iOS requirement (15.0.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Cylindex sells 1 in-app purchase, starting at $59.99 per year. DiveCodes asks for nothing beyond the download.

DiveCodes ships an update every 23 months, Cylindex every 6 weeks. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | DiveCodes | Cylindex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 6 weeks** |
| Size | 99 MB | 86 MB |
| Requires iOS | 17.0 | **15.0.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Konash](https://appshunter.io/developer/1700927216) | [Cylindex](https://appshunter.io/developer/1794462402) |

## What reviewers say

### DiveCodes

[App page](https://appshunter.io/ios/app/divecodes/id6478464917)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cylindex

[App page](https://appshunter.io/ios/app/cylindex-cylinder-inspections/id6741502559)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cylindex Premium | $59.99 | per year |


## Frequently asked questions

### Is DiveCodes free?

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

### Is Cylindex free?

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

### Do DiveCodes or Cylindex have ads?

Neither DiveCodes nor Cylindex shows ads.

### Which is updated more often, DiveCodes or Cylindex?

DiveCodes ships an update every 23 months, and Cylindex every 6 weeks. Most recently, DiveCodes was updated on October 27, 2026 and Cylindex on November 4, 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.*