The Sidewinder Checklist vs LetsDive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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!
LetsDive
Log your dives, discover new sites, and connect with the global diving community. This app offers a comprehensive logbook with intuitive data entry, custom trip folders, and image galleries. It also serves as a social hub for planning dives, sharing photos, and contributing to a community-driven dive resource.
- Intuitive dive logging
- Custom trip folders
- Precise GPS location logging
- Cross-platform access (mobile & web)
- Streamlined data import
- Dive site community boards
- Social connectivity and event planning
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LetsDive – Your Personal Logbook & Social Hub Log your dives, discover new sites, and connect with the global diving community. LetsDive is a comprehensive logbook and social platform designed for every diver, whether you are a newbie finishing your first course or an experienced explorer with hundreds of dives under your belt. Your Logbook, Your Way Say goodbye to tedious, manual entry. Log your dives through an intuitive interface and keep your history organized with custom trip folders and image galleries that make it easy to view and search your past adventures. • Precise Location Logging: Record exact GPS coordinates and automatically link your dives to specific sites. • Cross-Platform Access: Use LetsDive on your mobile device or access it as a desktop web app to make data entry and photo uploads from your computer a breeze. • Streamlined Data Import: Bring your existing dive logs into the app to keep your dive history in one place. • Full Data Ownership: Export your logbook in universal formats whenever you want for backups or to use with other software. • One-Touch Quick Entry: Speed up your logging with saved gear and gas defaults, complemented by smart, site-specific suggestions for your frequent dive buddies and local marine life. • Organized Trips: Create custom folders for your trips, complete with dive lists, photo galleries, and quick-search functionality to find your favorite moments in seconds. • Smart Merge: LetsDive identifies potential split dives for you to review and merge, keeping your history clean and organized. • Logbook Preview Mode: Explore the intuitive interface and features immediately by clicking "Sign Up" and selecting "Try the demo logbook" before creating an account. Be Part of Building the Ultimate Dive Resource Your dive site submissions, shared photos, and environmental data from your logs—such as visibility, temperature, and marine life sightings—help build a comprehensive dive resource for everyone. While your personal logbook remains completely private, anonymous parameters from site logs are aggregated to help other divers to: • Track Local Visibility: Check recent visibility and temperature trends at local dive sites before heading out. • Plan Holiday Gear: See what thickness of wetsuit divers are currently using at your next holiday destination. • Find Species: Pinpoint where to find your bucket list species, from exotic nudibranchs to playful sea lions. Social Connectivity & Coordination Stay connected with your local dive scene and beyond. • Organize & Meet Up: Create or join groups to plan shore dives, boat trips, or social events. Whether you need a buddy or a group, planning is simple and convenient. • Dedicated Site Boards: Every dive site has its own message board. Post updates on current conditions, ask gear questions, or swap tips with others who have been there. • Share the Fun: Upload your best photos, comment on your friends' latest dives, and stay in touch through our direct messaging.
Screenshots
Verdict
The clearest difference is price: LetsDive at Free against The Sidewinder Checklist's $4.99. LetsDive also leads on in-app purchases (none vs 4) and iOS requirement (13.0 vs 17.0). On rating, ratings volume, update cadence and ads 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
LetsDive is free to download; The Sidewinder Checklist costs $4.99 up front. The Sidewinder Checklist sells 4 one-off in-app purchases. LetsDive asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for The Sidewinder Checklist against 5.0 for LetsDive. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
The Sidewinder Checklist ships an update every 6 weeks, LetsDive every 3 months. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | The Sidewinder Checklist | LetsDive |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Austin | LetsDive LLC |
Customer experience
The Sidewinder Checklist
LetsDive
In-app purchases
The Sidewinder Checklist
- Tiny Tip$0.99
- Small Tip$1.99
- Medium Tip$4.99
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- Large Tip$9.99
LetsDive
No in-app purchases





