Comparison

The Sidewinder Checklist vs CCRtools

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

The Sidewinder Checklist

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
Read full description

The Sidewinder Checklist: Dive Simplified Welcome to The Sidewinder Checklist app – your ultimate digital companion for rebreather diving! Say goodbye to paper waste and embrace the digital revolution with our user-friendly app, specifically designed for iPhone and iPad. This innovative application is crafted to streamline your diving experience, making rebreather assembly and dive planning more efficient, environmentally friendly, and enjoyable. Key Features: Dedicated Checklists: Our app follows the manual lists to provide dedicated checklists for rebreather assembly. Ensure you never miss a step with intuitive and comprehensive guidance. Countdown Timers: Set precise countdown timers for Positive, Negative, and Pre-breathes, ensuring your rebreather preparation is timely and accurate. Comprehensive Task Management: Manage your build prep with ease. Our checklist helps you track every detail of your dive preparation. Save the Planet: Move away from throwaway paper checklists for every dive. Our digital solution not only streamlines your preparation but also contributes to reducing paper waste, helping you dive sustainably. Gear List with Locally Saved Data: Keep a detailed gear list and save your data locally on your device. Access your equipment checklist anytime, ensuring you’re always prepared for your dive. Notifications: Stay on top of your dive planning with timely notifications. Our app reminds you of crucial preparation steps and countdowns, so you’re always ready to dive without delay. Build History with Locally Saved Data: Stay on top of your cell health with cell accuracy charts. Along with build history that includes all the mV values stored from your build. Your Dive, Our Priority: The Sidewinder Checklist app is more than just a checklist; it's a comprehensive tool designed to enhance your diving experience. Whether you’re a seasoned rebreather diver or just starting, our app ensures your preparation is thorough, efficient, and environmentally conscious. Download Now: Ready to transform your diving routine? Download The Sidewinder Checklist app today and take the first step towards a more organized, efficient, and eco-friendly diving experience!

About

CCRtools

Read full description

CCRtools is application for closed-circuit rebreather (CCR) divers. CCRtools helps you prepare for dives safely with checklists, gas blending calculations, O₂ sensor tracking, and standard diving calculators. Checklists can be downloaded, created or modified and can contain checks, values to enter and timers. The sensor log supports up to five O₂ sensors displaying the trend of linearity.

Screenshots

The Sidewinder Checklist4 screens
CCRtools4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 6 level
The Sidewinder Checklist versus CCRtools: the parameters behind the verdict, then further details
ParameterThe Sidewinder ChecklistCCRtools
Price$4.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.2
Further details — not scored
Size5 MB1 MB
Age rating4+4+
DeveloperAndrew AustinKai-Uwe Sattler

In-app purchases

4 purchases

The Sidewinder Checklist

One-time4
  • Tiny Tip$0.99
  • Small Tip$1.99
  • Medium Tip$4.99
Show 1 more
  • Large Tip$9.99
None

CCRtools

No in-app purchases

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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