Your first workout.

Delta opens as an empty notebook. No setup, no questionnaire, no plan wizard: the fastest way to learn it is to log one exercise, which is what this page does, start to finish. Two minutes of reading, tops.

Start it

Home has three big buttons: Strength, Cardio and Functional. This page walks the strength one because it teaches the set logging everything else reuses; the other two are at the bottom of the page. Tap Strength and you are in a workout; the clock at the top is already running. Nothing else is required and nothing is committed yet. If you tap it by accident, Discard erases all evidence.

Delta's Home screen on day one, with Strength, Cardio, and Functional start buttons. — fig. 01 · day one: a blank notebook and three buttons

A fresh empty workout with the tip: do the set first, then enter what you got and tap the circle to lock it in. — fig. 02 · the tip at the top is the whole method

Add an exercise

Tap Add Exercise. The library is built for tapping, not typing: pick a group, tap the lift. Search is at the bottom if you want it, and the + writes a custom exercise if yours is missing. Once you have some history, a Most Used group floats your usual lifts to the front.

The exercise picker showing equipment groups: barbell, dumbbell, machine, bodyweight, core. — fig. 03 · pick a group, tap a lift

The barbell group's exercise list, Back Squat at the top. — fig. 04 · tap it, don't type it

Fill the first set, then add sets

This is the one habit worth learning on day one: write set 1 first. Enter the weight and reps, then tap Add set. Every new set copies the line above it, so three sets of 95 × 5 is one fill and two taps, not three rounds of typing. (Adding empty sets first and filling each one by hand works too. It is just slower, and we have witnesses.)

Back Squat with one set filled in: 95 pounds by 5 reps, not yet locked. — fig. 05 · set 1 written: 95 × 5

After tapping Add set twice: three identical rows of 95 by 5, sets two and three waiting. — fig. 06 · two taps later. Add set copies the plan down

Do the set, then lock it in

The circle at the end of each row is the commit. Do the set in the real world, correct the numbers to whatever actually happened, then tap the circle. Locking starts the rest clock, which counts up so a long sit is visible, and flips color when you pass your target (2:00 by default; yours to change in Settings). Delta saves what you locked, not what you planned.

Set one locked with a green check; the rest timer bar reads 13 seconds toward a 2 minute target. — fig. 07 · locked. The rest clock is already honest

Ramping up with lighter warm-up sets? Press and hold a set row for the set menu and flag them as warm-ups: they stay in the log but out of your PRs and progress math. That menu and the rest of the quiet gestures live in quick tips.

Finish

Tap Finish and the workout is in the book. Home picks up the running tally: workouts, week streak, pounds lifted, all computed from exactly what you locked in. Next time you log the same lift, each set shows what you did last time, and the notebook starts doing the remembering for you.

Home after the first workout: 1 workout, 1 week streak, 1.4 thousand pounds lifted, and the session in the recent list. — fig. 08 · the stats take it from here

The other two buttons

Cardio opens a short list instead of a blank workout: run, walk and cycle outdoors, or treadmill, indoor bike, rower, elliptical, HIIT and a plain "other". Pick one and it starts immediately.

The outdoor three use GPS and do the measuring for you: distance, pace, a map of where you went, and splits per mile when you are done. Run the same loop twice and Delta recognises it as the same route and starts keeping times for it. The indoor ones have nothing to measure from, so you type what the machine said: minutes, distance, or both. A Bluetooth rower streams straight in instead of being typed.

The cardio start sheet listing run, walk and cycle outdoors alongside treadmill, indoor bike, rower, elliptical and HIIT. — fig. 09 · cardio picks the activity first, then starts

Functional is the same screen as Strength, opened for work that is not barbell shaped: carries, sled pushes, kettlebell complexes, whatever your gym calls it. Exercises there can be measured in reps, in seconds, or in bodyweight plus added load, so a plank is logged as time and a weighted chin-up as bodyweight plus the belt.

The functional start sheet offering yoga, pilates and timed functional work, plus any custom activities you have saved. — fig. 10 · functional: the clock and the effort, no distance

All three land in the same log, export in the same CSV, and count toward the same tallies on Home.

A note on what counts

One rule runs underneath all of it: Delta only counts what you locked in. A set you typed but never committed is a plan, not a result, so it stays out of your PRs, your volume, and every number on Home. That is deliberate. The difference between what you intended and what you did is the whole reason to keep a log.

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