Apnealizer vs Current Coach

Apnealizer is the freediving logbook built for serious athletes. Import your dives, analyze every detail, and track the progress that actually moves your personal bests. IMPORT DIVES FROM OTHER APPS Sync from Garmin, Suunto, and ATMOS dive computers apps. Import older gear via the desktop sync app. Your logbook stays complete — no manual entry. ANALYZE AND COMPARE DIVES Dive profile charts plot depth, speed, and temperature for every dive. Overlay dives side by side to spot what's changing between sessions. Count strokes and pulls in FIM and CNF dives. Predict future performance based on your training trends. THE NERD SHEET An Excel-like table of all your dives — filterable, annotatable, and built for deep analysis. Mark rows, add notes, and cut through your data to find exactly what you're looking for. STAY ORGANIZED The dive calendar gives a clear overview of your full training history. Tag dives by session focus, buddy, or conditions. Track locations so you always remember where you trained. TRACK WHAT MATTERS Personal bests tracked automatically across all disciplines. Charts and statistics reveal your long-term progress. Dive metrics let you log soft performance indicators after each dive — capturing the subjective side of your training alongside the numbers. SHARE AND EXPORT Share any dive profile with a coach or training partner via link. Create social media cards and videos directly from your charts — ready to post. Apnealizer is free to use. Upgrade to Pro to unlock advanced analysis and unlimited cloud sync. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Current Coach turns your iPhone into a precision tidal current meter for sailors, racers, and cruisers. Drop your phone into a waterproof drifter, let it move with the water for 30–60 seconds, and get the speed and direction of the current in real time. Whether you're calling the first shift off the pin, staying out of a foul current at the layline, or understanding why the boat felt slower on port tack — Current Coach gives you the data instead of the guess. KEY FEATURES • PRECISION MEASUREMENT GPS-driven drift readings with start-to-end displacement. Every measurement shows speed in knots and m/min, direction in degrees, duration, and a confidence score combining GPS quality, recording length, and drift distance. • GPS SIGNAL SCOPE Before you hit Start, a radar-style scope shows live GPS accuracy — color-coded green/blue/amber/coral so you know whether the first ping will be good enough to anchor the reading. • HEAT-MAP VECTOR FIELD Toggle heat-map mode on the map and Current Coach interpolates a full vector field of currents across your race area from the readings you've collected. Lookback adjustable 1–24 hours. Confidence fade shows where the extrapolation is strong vs. weak. • HISTORICAL REVIEW Tap any recorded measurement to jump to the map with a ±12 hour window focused on that moment. Retrace a tack. Compare morning practice to the afternoon race. See how the current evolved. • M2X CLOUD SYNC (OPTIONAL) Sign in with an m2xsailing.com account to sync measurements to the cloud. View them in the web File Library, share with teammates, or disconnect any time. All core features work offline without signing in. • DESIGNED FOR THE HELM Dark palette, large numeric read-outs, readable under sunlight. Portrait-locked. Recording continues while the phone is pocketed. No ads, no subscription, no in-app purchases. Built for sailors who need the answer, not a guess.