Track weight loss progress — without counting a single calorie

Compound is a weight loss progress tracker for iPhone that asks one question a day: did you get closer to your goal today? Ate well, moved more, skipped the late-night snack — tap ↑ Closer. No calorie counting, no food logging, no weigh-in anxiety: just a trajectory chart of the daily decisions that actually produce the loss. Free on the App Store.

Compound app home screen after answering “Closer”, showing an upward progress trajectory chart

Why weight loss trackers burn people out

Calorie counters turn every meal into data entry, and the scale turns every morning into a verdict — even though daily weight swings mostly reflect water, not fat. Compound tracks the only layer you control directly: whether today’s choices, on balance, moved you toward your goal.

Logging fatigue is the number-one reason food trackers get abandoned. When the tracking costs more energy than the habit, the tracking loses.

Weight itself is a lagging, noisy signal. Behavior is the leading one — and behavior is exactly what a three-second honest answer captures.

How Compound tracks weight loss

Name your goal — “Lose 8 kg,” “Fit the old jeans” — and answer one question each evening. Good food day, a workout, a walk instead of the couch: ↑ Closer. The chart accumulates those answers into a visible trend that mirrors what the scale will eventually confirm.

It works for maintenance and fitness consistency too — “Closer” just means whatever moving toward your goal means this month.

What a bad week looks like in Compound

A few ↓ Further taps, a visible dip, and a line that keeps going. Nothing resets, no red warnings, no “you ruined it” messaging — because one bad week is a data point, not an identity.

The all-or-nothing spiral — one slip, then “the diet is blown,” then a lost month — is the single biggest killer of weight-loss attempts. A tracker that punishes the slip accelerates the spiral.

Compound does the opposite: the dip is honest, small on the chart, and surrounded by the better days that came before and after it. You see proportion instead of catastrophe.

Pulse notices what the scale can’t

Pulse, part of Compound Pro, reflects your recent days back to you — pattern first, judgment never. It catches the shape of your weeks while you’re still in them.

“Every ‘Closer’ this fortnight followed a morning workout. The evenings take care of themselves when the day starts moving.”
Compound app home screen showing a Pulse card — a short AI-generated reflection on recent momentum

Weight loss tracking questions

No. Compound doesn’t log food, count calories, or read health data. You answer one honest question a day about your own behavior — which is lighter to sustain and captures things no calorie database can, like stress eating or a walk you almost skipped.

You record it honestly — a few ↓ Further days — and the chart shows a small dip in a longer trend. Nothing resets and nothing shames you. Bad weeks are expected input, not failure states.

Yes. “Did you get closer to your goal today?” works for any direction — losing, maintaining, or building fitness. When your goal changes, start a new goal chapter and the chart and stats follow.

More questions? See the full FAQ →

Related ways to use Compound

See you tomorrow.

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