The upper lower split app that sets every weight for you

An upper lower split app needs four routines, the right weight on every lift without a max test, and a rule for when to add more. RIRLift does that for free on iPhone and Apple Watch. Add a 4-day plan, log reps and how many you had left, and each lift moves up when every set reaches the top of its range.

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iPhone Home Screen widgets: the estimated 1RM trend for Barbell Bench Press and the next session up

What an upper/lower lifter needs from an app

An upper/lower week, set by set

Lower 1: the heavy day

Two years of lifting, four days a week. Squat and hip thrust go heavy here; Lower 2 does the volume.

ExerciseYou loggedNext sessionWhy
Barbell Back Squat135 lb, 8 / 8 / 8 / 8, 2 left140 lb × 5–8Every set reached the top of 5–8. One step up, target back to 5.
Hip Thrust185 lb, 10 / 9 / 9, 2 left185 lb × 10The weakest set hit today's target of 9. Same weight, aim for 10.
Seated Leg Curl70 lb, 12 / 12 / 11, 1 left70 lb × 12The weakest set hit today's target of 11, short of the top of 8–12. Same weight, aim for 12.
Hip Abduction Machine100 lb, 25 / 25 / 25, 1 left110 lb × 15–25Top of the range on all three sets. Next step on the stack, reps back to 15.

Only the lifts that earned it go up. The rest know exactly what they need next time.

Upper 1: when the first set says the weight is off

Same lifter, upper heavy day. The target is 8 reps with 2 left, and the app checks every set against it.

ExerciseYou loggedNext sessionWhy
Incline Dumbbell Press40 lb pair, 8 reps, 4 left40 lb for set 2It works out to 42 lb (40 × 41 ÷ 39), and the gym's dumbbells go 40, 45. The weight holds; more reps will earn the jump.
Lat Pulldown120 lb, 8 reps, 4 left125 lb for set 2120 × 41 ÷ 39 ≈ 126. The stack moves in 5 lb steps, so 125 lb.
Seated Cable Row100 lb, 7 reps, nothing left (target 10, 1 left)90 lb for set 2Below the 8–12 range. 100 × 36 ÷ 40 = 90 lb, marked as a correction.

Corrections only use weights your equipment can make, so you never chase a number you can't load.

Upper/lower plans that open in RIRLift

Make it fit you

Questions

Is there a free upper lower split app?

Yes. RIRLift's free tier includes unlimited workouts, weight suggestions, progression and up to 4 active routines, which is a full upper/lower split. No account and no ads.

Is upper/lower better than push pull legs?

On four days, upper/lower trains every muscle twice a week; push pull legs needs six days for that. Pick the one that matches the days you can train. 4 day workout split compares them.

Do I need to know my maxes?

No. Lifts start from your logged or imported history. New ones start light and one max-reps set gives the app its measurement.

What should the A and B days change?

Usually exercise order and rep ranges: a heavy barbell lift first on one day, more dumbbell and machine volume on the other. Each exercise progresses on its own.

Can I run it on three days a week?

Yes. Run the four routines in order on three days a week, so the rotation carries into the next week. Each muscle gets trained a bit less than twice a week.

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