Abysner vs Puffin

Abysner is an open-source, modern dive planning tool with a focus on simplicity and usability. Built to give something back to the diving community, its primary aim is not to be the most feature-rich, but to be quick, user-friendly, and straightforward. Whether you're planning a deep technical dive or just want to check your MOD, Abysner makes dive planning smooth, accurate, and fast—perfect for use even right beside the water. Supported Features: • Models: Supports Buhlmann ZHL-16 A, B, and C with gradient factors. • Multi-Gas Support: Plan dives with Air, Nitrox, Oxygen, Trimix, Helitrox, Heliox, and more. • Oxygen: Includes OTU and CNS tracking for safe dive planning. • Customizable Settings: • Set salinity and altitude according to the diving environment. • Adjust SAC rates, ascent/descent rates. • Fine-tune decompression stop intervals and last deco stop depth. • Control max PPO2 for both during deco stops and normal diving. • Gas Picker: An intuitive interface for selecting and managing gas mixes, with critical information at your fingertips. • Automatic Contingency Plans: Automatically adjusts for longer or deeper dives, with configurable extra time and depth. • Gas Planning: • Visual chart of gas requirements per mix. • Density and PPO2 info at maximum depths for each gas. • Multi-Level Dive Planning: Plan dives across different depths with ease. Please note: CCR planning is not available yet. More coming soon!

Keep your dive history in one logbook you can open anywhere. Import computer logs, add dives manually, and review depth, gas, and site details when you need them. • Your dives, organized — browse your catalog with depth sparklines and quick access to every entry • Import from your computer — bring in Shearwater .db, UDDF, and dctool-supported logs; share from Shearwater on iPhone • Every dive, full detail — date, depth, duration, site, location, notes, and gas profiles • Trips as sessions — group dives, merge or split sessions, and auto-group by geolocation • See where you dived — map dive sites, filter by location, and set geo when logging Sign in with email, Apple, or Google. View logbook and session statistics with category filters. Try guest mode with bundled sample dives before you create an account. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/