Train
with intent.
Six-week strength programs, calibrated to your last session. Just confirm and lift.
7-day free trial
Six-week strength programs, calibrated to your last session. Just confirm and lift.
7-day free trial
A template is a guess at the average lifter. Checkfit calibrates to your strength on day one — and adjusts every session after.
Programs that progress automatically
Exercises mapped to your equipment
Adapts to every session you log
Programs work because data compounds. Every set you log makes the next one smarter.
Founder data — 6 weeks of beta testing.
Every exercise, organized by day.
Six weeks. Each session unlocks the next.
Weights pre-filled. Tap to confirm each set.
Calories and macros for your goal.
Six weeks of strength, adjusted to your last session.
Calculated from your RIR and history. Just confirm and lift.
Sets in seconds. The session moves itself forward.
Log two lifts you already know. Checkfit sets your starting weights from there.
Open the app. Weights are picked. Run the session and confirm each set.
Every set you log feeds the next session. The program adapts to you.
An adaptive strength training app for iPhone. It writes your program, calculates your weights, and tracks every set you log.
Intermediate-to-advanced lifters who want intelligent programming without hiring a coach. If you've trained for six months or more and want to actually progress, Checkfit is for you.
From your performance history and RIR (Reps in Reserve) targets. You confirm; the math is done.
Works with a full gym, home dumbbells, or bodyweight. Tell Checkfit your equipment and it adjusts.
Yes. The programming logic responds to your strength and recovery, not your gender.
Those are loggers — you write the program, they record it. Checkfit writes the program and picks the weights. You just lift.
Yes. Cancel anytime; you keep access until your renewal date.
Yes — 7 days free on every plan. Cancel anytime before it ends.
Try Checkfit free for 7 days. Cancel anytime.
Train with intent. Starting today.