Stackd vs BBB Tracker

Training phases change. Work gets busy. Goals shift. Most fitness apps lock you into their programs. Stackd works with whatever plan you built this week — because your AI agent writes it, and Stackd just keeps score. IMPORT AI WORKOUTS IN SECONDS Design your program in any AI agent. Copy the JSON. Paste it into Stackd. Your full workout plan appears instantly — exercises, sets, rep targets, everything. No manual entry. No templates. No friction. TRACK EVERY SESSION Log sets, reps, and weight as you train. Stackd auto-fills your last session's weight so you always have a starting point. Hit your rep targets and the weight recommendation updates automatically — progressive overload built in. SEE YOUR STRENGTH GROW Estimated 1-rep max charts for every exercise. Watch your squat, bench, and deadlift climb week over week. Full session history so you never lose a workout. NUTRITION TRACKING INCLUDED Log meals and hit your macro targets without switching apps. Build daily meal plans, track protein, carbs, and fat. Everything in one place. BUILT FOR LIFTERS WHO PLAN WITH AI Most fitness apps want to sell you their programs. Stackd assumes you already know how to use AI Agents to build a better one. We just give those programs a home. No ads. No upsells inside the app. Cancel anytime.

BBB Tracker is a focused, no-nonsense companion for Jim Wendler's 5/3/1 strength program with the Boring But Big (BBB) assistance template. Set your training maxes once and BBB Tracker handles the rest — every cycle, every week, every set is calculated for you. Step into a workout and just lift. What it does: • Full 5/3/1 cycle logic — 5s, 3s, and 5/3/1 weeks, with working sets and AMRAP top sets prescribed automatically • Boring But Big built in — 5×10 assistance work at the right percentage every session • Automatic warmups and plate-rounded weights tuned to your bar and increment • Training Max progression handled for you — +5 lb upper, +10 lb lower each cycle • TM test weeks every third cycle, with stall detection that suggests when to reset • Build your own accessory library and log it alongside the main work • Full workout history so you can see every rep you've put in Private by design: • No account, no sign-up • No analytics, no tracking, no ads • Everything stays on your device — nothing is ever sent to a server