RUCKR vs F3 Workout Timer

RUCKR — Load-Aware Rucking Tracker Track every ruck with the precision your training deserves. RUCKR calculates calorie burn based on what you actually carry using the Pandolf equation — the same formula trusted by military researchers for decades. No guessing, no generic estimates. LOAD-AWARE TRACKING • Record rucks with GPS route, pace, elevation, and terrain tracking • Calculate accurate calorie burn based on your carried weight, body metrics, and terrain • Build an equipment library of rucksacks, plates, sandbags, and accessories • Create reusable gear presets so you're ready to go in seconds • Track equipment usage stats across all your rucks • Log a ruck by hand when you forgot to hit record or it happened off-app RUCK FROM YOUR WRIST • Start, pause, and finish a ruck right from your Apple Watch — no phone in hand • Carry your load, not your phone, and keep tracking every mile • Your watch ruck syncs straight into your RUCKR history IMPORT & SYNC • Pull activities from Apple Health and Garmin automatically • Write finished rucks back to Apple Health with load-adjusted calories • Review and finalize imported rucks before they appear in your feed • Smart duplicate detection keeps your history clean • Batch actions for managing multiple imports at once SHARE WITH FRIENDS WHO RUCK • Follow friends and see their rucks in a clean, chronological feed • Give fist bumps and leave comments • Public or private account — your choice • Route privacy controls hide start and end points by default • No algorithms, no engagement loops, just your people BUILT FOR RUCKERS • Dark mode interface designed for readability before, during, and after your ruck • Distance and weight displayed in your preferred units • Equipment-level detail on every activity • Photo and notes support to document your sessions • Crash recovery saves your ruck if the app closes unexpectedly PRECISE BY DEFAULT Your body metrics power the Pandolf equation alongside your carried load, terrain grade, and walking speed. RUCKR stores everything in metric behind the scenes and displays it however you prefer. Every calorie number means something. What you carry matters. RUCKR is built for people who take their rucks seriously.

F3 Workout Timer is a free, smack-talking timer built for F3 beatdowns. Mark who posted and the app calls out PAX by name during heckles and motivation — no more generic countdowns. Dial the heat from low to high intensity and the callouts get more frequent and more savage. Sync every phone on the field to the Q's clock with a scannable QR code, so the whole beatdown moves together in real time. Keep going with the screen locked or the phone in your pocket — cues, beeps, and callouts keep firing. Built for every format you Q: standard station rotations, a simple countdown, a precise work/rest interval timer (fixed count or unlimited), or a freestyle stopwatch with no timer at all. Recently used timers are saved so you can start your go-to workout in one tap. Browse region playlists to queue up tunes for the whole AO, and send in your own smack-talk lines to get added to the callout rotation. F3 Workout Timer requires no account for normal use — sign in with Google or Apple only if you're managing your region's rosters, AOs, or playlists as an admin. Free. No ads. No subscriptions.