iOS · Pre-launch waitlist

Make weight.
Not decisions.

The difference Most fighters and strength athletes nowadays guess on their weight cut: eyeballed calories, a winged water cut, hope the scale cooperates. Deficit charts the exact number to hit, every day from now to weigh-in. You stop deciding. You execute.

Join the waitlist See the app First cohort shapes what ships
Your Atlas · charted by the engine
190.2 183.0 lbs / 12 days
Lead-in Diet Water cut 183.0 · weigh-in Day 1 Day 4 Day 8 Day 12
Sport Powerlifting · USAPL 83 kg
Today’s ceiling ≤ 2,180 kcal · P 168–185g
Weigh-in Day before · 24 hrs to rehydrate
  • MMA
  • Boxing
  • Wrestling
  • BJJ
  • Kickboxing / Muay Thai
  • Powerlifting
  • Olympic Weightlifting
The app

The whole cut.
Four tabs.

Today’s number, the full day-by-day chart, a food log that does the macros, and a coach that can change the plan. Tap through it.

Today

One number to hit. Today.

Open the app to today’s page: a kcal ceiling, a protein band, a carb number, a sweat window. Calibrated to your sport, your bodyweight, and the day’s session intensity, not a flat number.

Kcal ceiling One per day, charted to weigh-in
Setup Sport + weights · under a minute
Atlas

Every day charted, to the scale.

Your Atlas is the whole cut on one page: diet phases, refeeds, the water cut sized to your rehydration window, weigh-in day. Fall behind and the weekly check-in re-charts every remaining day, capped at ±100 kcal a week so nothing whiplashes.

Weekly check-in Sixty seconds · plan re-charts
Refeeds Every 7 days on 28+ day cuts
Log

Log it like you’d text it.

Type what you ate in plain words and it does the macros. Whole plates split into their parts on their own. No signal on the gym floor? Entries queue and sync when you’re back. Intake sits beside the prescription, never replaces it.

Plates Decomposed automatically
Offline Queues & syncs
Coach

Talk to your Atlas. It changes.

Ask for a looser deficit, more carbs on lift days, a sweat session moved to Friday. The coach runs the math against your sport and remaining timeline, writes the change back, and every remaining day updates. The safety ceiling still holds.

Plan access Read–write
Adjusts Kcal · Macros · Sweat · Timing
Today · Day 8 / 12 Diet
≤ 2,180
Kcal ceiling
Protein 168–185g
Carbs 286g
This morning 186.4 · on track
Sweat Rest day · none
Weigh-in 4 days out
Your Atlas 190.2 → 183.0
Day 8 Diet 2,180 186.1
Day 9 Diet 2,180 185.6
Day 10 Water cut 1,940 184.9
Day 11 Water cut 1,940 183.8
Day 12 Weigh-in — 183.0
Today’s log Typed, not tapped
  • 2 eggs, 2 toast, black coffee
  • orange chicken & white rice plate
  • handful of almonds
1,840 / 2,180 Kcal logged · ceiling
Protein142g
Carbs196g
Fat54g
Plate split into 2 foods automatically
Coach Your Atlas
You “Loosen the deficit by 80 kcal · more carbs on lift days.”
Plan adjusted · 4 days left
Kcal ceiling 2,180→2,260
Carbs · lift days 286g→308g
Sweat +30 min Fri
Every remaining day re-charted
The engine

Deterministic math.
Not a chatbot.

Your plan is charted by a rule-based engine, calibrated per sport and per rehydration window, with a weekly beat to keep the math honest. The coach proposes; the engine and the ceiling decide.

The Weekly Read

Sixty seconds a week. The plan re-charts.

Every seven days you confirm the scale data and rate energy, training, and sleep. The engine reads the week against your trend and hands back one verdict, one coaching note, and the cap call. The cap moves off the trend, not the raw scale, and it never jumps more than ±100 kcal at once.

Cadence Every 7 days · no mid-week surprises
Re-chart cap ±100 kcal / week
Sport-Specific Calibration

Different sport, different fuel.

Combat athletes tolerate deeper deficits with tighter carbs through the water cut. Powerlifters get higher carbs to protect glycogen. When you fall behind, the engine re-charts differently per sport.

Combat carbs 1.4–2.0 g/lb
Strength carbs 1.8–2.5 g/lb
Water Cut Protocol

Sized to your rehydration window.

Structured sodium and water manipulation for the final days. Two-hour window gets zero water cut. Longer windows get graded loading, sodium tapering, and timed sweat sessions.

2 hr window 0 lbs
24 hr window Up to 5 lbs
Rehydration

From the scale to the platform.

Step-by-step rehydration from the moment you leave the scale. Every sip, every snack, every electrolyte, all timed and portioned to your exact competition window.

Protocol steps 2–8
Timed to Your competition window
Safety Ceiling

Hard limits.
No exceptions.

Cutting goes bad when nobody’s holding the floor. These limits are the engine. The coach asks the engine for a plan; the engine refuses to chart past these. Not a guardrail bolted on. The math itself.

8%
Max cut · strength
Lifters carry their cut weight on the bar. Bigger cuts measurably hurt maximal strength on the platform.
15%
Max cut · combat
Past 15% of bodyweight, the app won’t build the cut. Most athletes in that range should move up a class.
0.8g/lb
Protein floor
Per pound of bodyweight, every day, to protect lean mass. The Coach can’t take you below it.
NEVER
Banned methods
No diuretics. No laxatives. No vomiting. No training to heat exhaustion. The Coach refuses, every time.

If the math says it isn’t safe in the time you have, the app says so, clearly and without panic, and won’t build the cut.

On the record

Every cut earned,
on the record.

The cut ends, the record doesn’t. Weigh-in outcomes build a lifetime Made-Weight Record, and the moment the scale lands you get a share card built for the post on the way back.

3 /4
made weight
4 camps · 6.4 lb typical · last earned Aug
Questions

Before you
spend an email.

When does it launch?

Deficit is in closed TestFlight beta now, and invites go out in waves. Join the waitlist and you’re in line. Tell us your sport and we’ll prioritize the cohorts we’re building for first.

Is it only for iPhone?

Yes. iOS first, built natively for iPhone. Android isn’t on the near-term roadmap. If that changes, the waitlist hears first.

Can I log what I actually eat?

Yes. The LOG tab is a plain-text food journal: type it like a note and it does the macros, splitting whole plates into their parts. Your intake sits alongside the prescribed plan; it never overwrites the number you’re told to hit.

Is cutting like this safe?

Deficit runs on a hard Safety Ceiling the engine and the coach can’t cross: calorie floors, a protein floor, water cuts capped to your rehydration window, and banned methods it refuses outright. If the math isn’t safe in the time you have, it tells you plainly, and won’t build the cut.

Anything missing, ask us at support@getdeficit.com.

Join the build

The first athletes
shape what ships.

Deficit is pre-launch and inviting athletes in waves. Join now for an early TestFlight invite, and the first cohort’s feedback decides what gets built next: which sports go deeper, what the coach should never say, where new features land.

  • Early inviteA spot in the next TestFlight wave
  • A real sayFounding feedback steers the roadmap
  • First to knowLaunch & pricing news before anyone
What do you compete in?
One email when your invite’s ready. No spam. Privacy · Terms.
You’re in.
We’ll email when your wave opens, and we’ll ask what you want built.