Tools
Open the right tool for the question you are solving
The timer stays at the center of the product. These supporting tools help you choose better rest durations, plan loads, compare structures, and keep the session moving with less guesswork.
Load planning and performance benchmarks
Use these tools when you need to estimate strength, convert effort into loading, or compare totals across bodyweights.
1RM Calculator
Compare Epley and Lombardi estimates, check intensity, and review working weights from 50 to 100 percent.
Open toolRPE Calculator
Turn weight, reps, and RPE into an estimated max and next-set loading targets.
Open toolStrength Score Calculator
Compare DOTS, Goodlift, and Wilks when you want a bodyweight-adjusted benchmark.
Open toolPlate Loading Calculator
Build the bar with custom bar weight, fractional plates, inventory filters, and a visual stack preview.
Open toolWarm-Up Calculator
Enter your working weight and get the full ramp: load, reps, and rest for every warm-up set.
Open toolReverse Plate Calculator
See every barbell total you can actually load with the plates you own.
Open toolPercentage Chart
Generate a printable percentage table from your one-rep max, with rest for each intensity.
Open toolATP-PC Recovery Calculator
Enter your rest time to see the percentage of ATP-PC energy recovered and what that rest supports, from research data.
Open toolRest decisions and workout flow tools
Open these when you are deciding how to structure the session, when to rest, or how to keep the next set moving.
Workout Duration Planner
Build your session and see how long it really takes, including rest and setup time.
Open toolWeekly Split Planner
Assign your training days and check every muscle group gets 48 to 72 hours to recover.
Open toolDeload Calculator
Turn your normal working numbers into a deload week prescription.
Open toolPrintable Cheat Sheets
Rest by goal, the ATP recovery curve, and the RPE table, formatted to print.
Open toolInterval Timer
Tabata, EMOM, AMRAP, and circuit modes with audio cues on every transition. Works offline.
Open toolRest by Exercise
Look up the rest range for 43 exercises, from squats and deadlifts to curls, muscle-ups, and rest-pause protocols.
Open toolRest Recommender
Answer four questions about your goal, lift, set, and RPE to get a rest range with the reasoning shown.
Open toolEnergy System Advisor
Match exercise profile, intensity, and goal to a science-backed rest recommendation and timer launch.
Open toolEMOM Comparator
Compare density, session time, and structure before choosing EMOM over standard rest.
Open toolWorkout Logger
Log completed sets, autosave them locally, export the session, and hand the next rest target into the timer.
Open toolNeed the workflow first?
Open the guides hub for quick-start instructions, preset explanations, science framing, and glossary terms before you use a tool in the gym.
Browse guidesReady to run the countdown?
Go straight back to the timer when you already know the rest target or after one of the tools has given you a decision.
Open the timer