Stack Performance

Stack Performance is the only app built for serious athletes who track everything — not just workouts. Whether you're an elite competitor, a dedicated gym-goer, or someone who takes their health seriously, Stack gives you complete visibility over every variable that affects your performance. Log your training, nutrition, compounds, supplements, bloodwork, recovery, and body metrics all in one place. Get AI coaching based on your actual data — not generic advice. TRAIN 217 exercises with active workout mode, rest timers, plate calculator, and custom routine builder. Log sets, reps, and weight in real time. Track personal records and strength progression automatically. View weekly volume, training frequency, and performance trends over time. FUEL Search and log from 3 million+ real foods via Open Food Facts and the USDA database. Track calories, protein, carbs, and fat against your personal targets. Build weekly meal plans, generate grocery lists, and monitor your nutrition trends over time. DOSE The only fitness app with a full compound and peptide library. Log doses, track half-lives, and see your entire protocol mapped on your calendar. Manage your cycle from start to finish with complete dosing history. BLOODWORK Log your lab panels and track trends over time. Reference ranges across hormone, metabolic, complete blood count, and thyroid panels. See your bloodwork results alongside your protocol for the complete picture. RECOVER Log sleep duration and quality, HRV, soreness, energy levels, and mood daily. Get an automatic readiness score so you always know when to push hard and when to back off. Identify patterns between your recovery metrics and performance. BODY METRICS Track weight, body fat percentage, and measurements over time. Visualise your body composition changes with easy-to-read charts and trend lines. ANALYSE Personal records, strength progression charts, weekly training volume, body metrics, and calorie trends — all in one place. Understand what's working and what needs to change. AI COACH Ask anything about your training, nutrition, bloodwork, or recovery. Get personalised answers based on your actual numbers — your PRs, your protocol, your sleep data, and your goals. Not generic advice from the internet. INJURIES Log and track injuries, niggles, and rehab progress. Monitor how injuries affect your training and recovery over time. JOURNAL Daily training journal to log mood, energy, notes, and reflections alongside your performance data. REMINDERS Set custom reminders for doses, workouts, hydration targets, and supplements. Never miss a scheduled dose or training session again. Privacy first. Your health data stays yours. No ads. Ever. No data sold to third parties. Start your 7-day free trial today. Full access from day one. No charge until day 7. Cancel any time. SUBSCRIPTION INFO Stack Performance offers monthly and annual auto-renewable subscriptions. Payment is charged to your Google Play account at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Google Play account settings. MEDICAL DISCLAIMER Stack Performance is not a medical device and does not provide medical advice. The information in this app is for general wellness and informational purposes only. Always consult a qualified healthcare professional before making any changes to your diet, exercise, supplement, or medication regimen. Do not use this app as a substitute for professional medical advice, diagnosis, or treatment.