# The Sidewinder Checklist vs CCRtools

The clearest difference is price: CCRtools at Free against The Sidewinder Checklist's $4.99. CCRtools also leads on in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 6 weeks). On ads, device support and iOS requirement there is nothing between them.

CCRtools is free to download; The Sidewinder Checklist costs $4.99 up front. The Sidewinder Checklist sells 4 one-off in-app purchases. CCRtools asks for nothing beyond the download.

The Sidewinder Checklist ships an update every 6 weeks, CCRtools every 3 weeks. The most recent releases landed on September 9, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | The Sidewinder Checklist | CCRtools |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/the-sidewinder-checklist/id6476092633/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 5 MB | 1 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Austin](https://appshunter.io/developer/1708589155) | [Kai-Uwe Sattler](https://appshunter.io/developer/500229044) |

## What reviewers say

### The Sidewinder Checklist

[App page](https://appshunter.io/ios/app/the-sidewinder-checklist/id6476092633)

This app digitizes rebreather diving preparation with user-friendly checklists and countdown timers. It helps manage gear, track build history, and reduce paper waste for a more efficient and eco-friendly diving experience.

**Highlights:** Dedicated rebreather assembly checklists, Countdown timers for pre-breathes, Comprehensive task management for dive prep, Digital gear list with local data saving, Build history with mV values, Timely preparation notifications

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tiny Tip | $0.99 | one-time |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


### CCRtools

[App page](https://appshunter.io/ios/app/ccrtools/id6745844453)

**In-app purchases:** none


## Frequently asked questions

### Is The Sidewinder Checklist free?

The Sidewinder Checklist costs $4.99, and also offers in-app purchases.

### Is CCRtools free?

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

### Do The Sidewinder Checklist or CCRtools have ads?

Neither The Sidewinder Checklist nor CCRtools shows ads.

### Which is updated more often, The Sidewinder Checklist or CCRtools?

The Sidewinder Checklist ships an update every 6 weeks, and CCRtools every 3 weeks. Most recently, The Sidewinder Checklist was updated on September 9, 2026 and CCRtools on June 1, 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.*