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For a physician-supervised protein-sparing fast

Protein first.
One day at a time.

hard9 turns your plan into what to do today: the checklist, the meal, the grocery list and the workout, all in one place.

Create your plan See how it works

Everything the plan asks of you

Built around the day, not a dashboard.

Today, in order

Weigh-in, shake, broths, meal, gym and magnesium, each at your time, with an Up next card so you never have to think about what comes next.

Grocery runs that add up

A day-by-day fridge simulation lists only what you are short of, rounded to real pack sizes, with what is already in the fridge accounted for.

Lifting that protects muscle

Three sessions a week in two phases, a set and load logger, and form guides with drawings for every movement.

Progress you can see

Weight and waist trends, weekly tape measurements and private progress photos, stripped of location data before they leave your phone.

An assistant that knows the rules

Ask it to swap a meal or change an exercise. It changes the plan for you, refuses anything that breaks the safety rules, and every change can be undone.

On your phone, even offline

Install it to your home screen. Check items off in the gym with no signal; it syncs when you are back.

How it works

1

Set up your plan

Pick a start Monday, the length and any trips. Your physician sets or confirms the daily targets.

2

Follow the day

One checklist, one meal card, one shopping list. Tick things off as you go.

3

Adjust as you learn

Swap meals, move sessions, log what you really bought. The plan and the shopping recompute.

Safety rules the app keeps for you

A very low calorie protocol is only as safe as its details. hard9 builds them into every day and holds the assistant to them.

Protein and calorie targets set with your physician
Two broths with lite salt and magnesium every day
No alcohol, anywhere in the plan
Exercise rules that follow the conditions on your profile
Warning signs that mean stop and call, always one tap away

Pricing

One payment for 9 weeks. No subscription.

Plan

$59for 9 weeks
Next block $39
Your full 9-week plan: daily checklist, recipes, grocery runs, gym log, measurements and photos.
AI assistant: 150 full answers a block, then a lighter model, up to 30 messages a day.
Swap meals any time with the assistant.
Create your plan

Coach

Coming soon
$99for 9 weeks
Next block $69

Not available yet. When it launches, it adds:

Everything in Plan.
A stronger AI coach that knows your week: 400 messages a block.
A weekly check-in that reviews your weigh-ins, checklist and gym, and adjusts the plan.
A plan for after week 9.

Care

Coming later
Planned from$499for 9 weeks

Not available yet. When it launches, it adds:

Everything in Coach.
A licensed clinician reviews your health and labs before you start.
A registered dietitian and a certified trainer by chat, with a reply within one business day.
Two video check-ins.

Onboarding and your plan preview are free. You pay before week 1. Prices in US dollars, before sales tax.

Every tier follows the same safety rules. A protein-sparing modified fast needs a doctor's supervision.

Questions

Ready when your physician is.

Create your plan

hard9 is a planning and tracking tool, not medical advice. A protein-sparing modified fast should only be followed under the supervision of a physician.