JoyDive² vs Bottomtime

JoyDive² is the dive log that grows with you — from your very first dive to your most advanced ones. No Dive Computer? No Problem. Start logging right away. Enter depth, dive time, water temperature, gas, and notes by hand. JoyDive² is built for divers at every stage — you don't need a dive computer to keep a proper logbook. Got a Dive Computer? Bring Everything In. Supports major brands including UDDF, Subsurface, Suunto, Garmin, Shearwater, ATMOS, Seabear, and more. Import your computer logs and they merge seamlessly alongside your manual entries — one complete, unified logbook. Every Detail, At a Glance Each entry can hold depth profile, max & average depth, dive time, gas mix (Air / Nitrox / Trimix), water temperature and conditions, equipment (wetsuit, weights, cylinder), GPS coordinates, and notes. A clean list view and calendar make it easy to browse your full dive history. Interactive Profile, With Tissue Loading (Limited Support) Tap and drag anywhere on the dive profile chart to inspect that exact moment — depth, elapsed time, and an estimated tissue loading level from the Bühlmann ZHL-16C model. A clearer picture of every dive, not a replacement for your dive computer. Tissue loading supports single-gas air and nitrox dives; it isn't available for trimix, multi-gas or rebreather dives, or for logs with discontinuous imported data — the depth profile itself always displays normally. Dive Site Map GPS coordinates are automatically plotted on a map so you can see every dive site you've visited. Cluster display keeps the map readable no matter how many dives you've logged. Go Ad-Free, Stay Focused (iOS) Core features are completely free. On iOS, a one-time purchase of "Remove Ads" ($1.99 USD) removes all ads permanently. Privacy First All dive data is stored exclusively on your device and never uploaded to a server. Your dive log is yours alone. 18 Languages · iOS 17+ · macOS 14+ Traditional Chinese, Simplified Chinese, English, Japanese, Korean, French, German, Spanish, Italian, Dutch, Portuguese, Indonesian, Malay, Vietnamese, Thai, Greek, Croatian, British English.

Bottomtime is the dive logbook that belongs to you — beautiful, fast, and offline-first. Log a dive in 30 seconds, watch your sites map fill up, and keep your whole diving life in one place. No account required. Your data is yours. WHY DIVERS SWITCH TO BOTTOMTIME • Offline-first: log on the boat, the liveaboard or the cenote — no signal needed. Everything syncs when you're back. • Log a dive in 30 seconds: site, depth, time, gas, buddy, conditions — fast, or as detailed as you like. • Your sites on a map: every dive plotted, your personal underwater passport. • Species log included — names and sightings are never behind a paywall. FREE, AND GENEROUS • Unlimited dive log with photos • 30-second quick log and a full detailed editor • Career stats: dives, max depth, total bottom time • Dive sites map • Marine species log with common names BOTTOMTIME PRO — automation and comfort, never your data • Import from Apple Health and dive computers (depth, duration) — no double entry • Import and export open formats: UDDF, CSV, PDF • Automatic iCloud sync across iPhone and iPad • Advanced stats and trends: SAC/RMV, average depth, progression over time • Gear tracking with service reminders • Species photos and history • PDF logbook export with instructor signature • Surface interval and no-fly planner (informational) • Home Screen widgets BUILT FOR EVERY DIVER Recreational, technical, freediver or snorkeler — multi-cylinder, nitrox and trimix, safety stops, and metric or imperial units. YOUR DATA, YOUR RULES No account needed. Works fully offline. Export to UDDF, CSV and PDF anytime — your dive history is never locked in. Premium is available as a monthly or yearly subscription (with a 7-day free trial on the annual plan) or a one-time lifetime unlock. Free features stay free, forever. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://develak.com/privacy-policy/