Comparison

The Sidewinder Checklist vs krakentools

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

krakentools

This comprehensive dive toolbox offers planning and safety features for recreational, Nitrox, TEC, and CCR divers. It includes a digital logbook with Bluetooth connectivity for various dive computers, extensive import/export options, and tools for underwater media editing.

Highlights
  • Dive planner for various dive types
  • Decompression planner with Bühlmann ZH-L16C
  • Gas planning and analysis tools
  • Digital logbook with Bluetooth sync
  • Import/export dive data
  • Underwater photo/video color correction
  • CCR-specific dive tools
Features
Read full description

KrakenTools – the all-in-one toolbox for recreational, Nitrox, TEC, and CCR divers. Version includes 26 professional dive tools, a reworked digital logbook, Bluetooth support for many dive computers, expanded import/export functions, and support for 164 languages. DIVE TOOLS FOR PLANNING AND SAFETY • Dive planner for air, Nitrox, single, repetitive, and multi-dive plans • Decompression planner with Bühlmann ZH-L16C • NDL, Nitrox, Trimix, Best Mix, and gas analysis • Gasblender with real-gas and Z-correction • CNS/OTU, gas density, minimum gas, rock bottom, turn pressure, and lost gas • Bailout, ICD, EAD, EADD, END, ENP, and CCR setpoint • New CCR tools: O₂ cell tracker, scrubber calculator, and scrubber tracking • Lift bag, weighting, and scenario calculators DIGITAL LOGBOOK • Reworked logbook with improved structure, stability, and interfaces • Bluetooth for Shearwater, Heinrichs Weikamp, Ratio, DiveSoft, Halcyon, DiveSystem, Scubapro, Mares, Aqua Lung, Cressi, Oceanic, and more • Import from Scubapro LogTRAK, Garmin FIT, DiveLog, Suunto, and other formats • Export as JSON, CSV, UDDF, DL7, Subsurface XML, and PDF • Dive profiles, statistics, analysis, projects, and groups KRAKENSTUDIO • UW Color Fix becomes KrakenStudio • Photo and video color fix for underwater media • Beta camera connection for Insta360, GoPro, DJI Osmo, and other action cams KrakenTools combines dive planning, gas planning, logbook, dive computer connection, media editing, and analysis in one modern app – developed by divers for divers. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

The Sidewinder Checklist3 screens
krakentools4 screens

Verdict

The call

The clearest difference is price: krakentools at Free against The Sidewinder Checklist's $4.99. krakentools also leads on update cadence (every 8 days vs every 6 weeks) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support 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

krakentools is free to download; The Sidewinder Checklist costs $4.99 up front. The Sidewinder Checklist sells 4 one-off in-app purchases and krakentools sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

The Sidewinder Checklist ships an update every 6 weeks, krakentools every 8 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
The Sidewinder Checklist versus krakentools: the parameters behind the verdict, then further details
ParameterThe Sidewinder Checklistkrakentools
Price$4.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 6 weeksEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size5 MB140 MB
Age rating4+4+
DeveloperAndrew AustinArndt Kemper

Customer experience

The Sidewinder Checklist

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

krakentools

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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
3 purchases

krakentools

Subscriptions2
  • KrakenTools Pro - Monthly$3.991 Month
  • KrakenTools Pro - Yearly$44.991 Year
One-time1
  • KrakenTools Pro Version$49.99

Questions

Is The Sidewinder Checklist free?
The Sidewinder Checklist costs $4.99, and also offers in-app purchases.
Is krakentools free?
krakentools is free to download, with in-app purchases available.
Do The Sidewinder Checklist or krakentools have ads?
Neither The Sidewinder Checklist nor krakentools shows ads.
Which is updated more often, The Sidewinder Checklist or krakentools?
The Sidewinder Checklist ships an update every 6 weeks, and krakentools every 8 days. Most recently, The Sidewinder Checklist was updated on November 7, 2026 and krakentools on October 31, 2026.

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