US fasting product

Your fasting day, simplified.

Fast smarter. Eat with clarity. Keep schedule, water, calorie windows, and gray-zone food decisions in one calm mobile dashboard.

Free

Core timer

lb + ft

US units

3/8

Water goal

Protein

Today

Standard 16:8

Eating

60%

Eating window

3h 10m left

8 hour calorie window

Water

3 of 8 cups

Calories

1,250 kcal left

Next suggestion

Break fast with protein first, then spend the calorie window intentionally.

0-5 kcal

Black coffee

95/100Fast-safe

Likely okay for fasting

Black coffee is very low calorie and commonly used during intermittent fasting.

Skip sugar, milk, cream, collagen, and flavored syrups until the eating window.

Full answer & evidence

Lemon water

1-10 kcal · 80/100

Use caution

Apple cider vinegar

3 kcal per tbsp · 76/100

Use caution

Diet soda

0-5 kcal · 60/100

Use caution

First meal

38g protein

Greek yogurt protein bowl

Greek yogurt, berries, chia, and a small granola finish.

430 kcal

Break fast gently

28g protein

Eggs and avocado toast

Two eggs, one toast, avocado, and fruit on the side.

520 kcal

Main meal

48g protein

Chicken rice bowl

Lean chicken, rice, greens, salsa, and olive oil control.

680 kcal

Dinner window

44g protein

Salmon potato plate

Salmon, potatoes, cucumber salad, and lemon yogurt sauce.

740 kcal

Schedule

Repeatable 14:10, 16:8, 18:6, and OMAD day shapes.

Open

Water

Daily hydration goal, caffeine context, and electrolyte notes.

Open

Calorie window

Know what is left when your eating window opens.

Open

Can I have this?

Clear answers for coffee, lemon water, gum, broth, and more.

Open

Fasting windows

Start with the schedule you can repeat.

14:10 and 16:8 stay free. Tighter plans can move into Pro when the product has real traction.

View schedules

Free

Beginner 14:10

A gentle first plan for building rhythm without fighting your day.

10 AM to 8 PM

1,700-2,100 kcal

Free

Standard 16:8

The default daily fasting pattern for simple weight and meal timing control.

12 PM to 8 PM

1,500-1,900 kcal

Pro

Focused 18:6

A tighter eating window when 16:8 feels easy and hydration is already steady.

1 PM to 7 PM

1,400-1,800 kcal

Pro

OMAD

One meal a day with stronger protein, fiber, and electrolyte planning.

5 PM to 6 PM

1,200-1,700 kcal

Fasting decisions

The product lives in the gray zone.

The highest-intent searches are not recipes. They are small decisions people make at 8:17 AM. Here are the most common examples.

Search 41 decisions

0-5 kcal

Black coffee

Fast-safe

Likely okay for fasting

95/100 Fast Score

1-10 kcal

Lemon water

Use caution

Small splash is usually okay

80/100 Fast Score

3 kcal per tbsp

Apple cider vinegar

Use caution

Tiny calories, but not a strict clean fast

76/100 Fast Score

0-5 kcal

Diet soda

Use caution

Calorie-free, but appetite may change

60/100 Fast Score

0-5 kcal

Stevia

Use caution

Usually calorie-safe, behavior can vary

72/100 Fast Score

0-10 kcal

Creatine

Use caution

Plain creatine is usually okay by calories

82/100 Fast Score

0-50 kcal

Pre-workout

Use caution

Depends on the label

52/100 Fast Score

Usually 0-5 kcal

Medications

Use caution

Take medication as prescribed

90/100 Fast Score

30-180 kcal

Coffee with cream

Breaks fast

Breaks a clean fast

22/100 Fast Score

110-130 kcal per tbsp

MCT oil

Breaks fast

Breaks a clean fast

18/100 Fast Score

120-300 kcal

Protein shake

Eating window

Best for the eating window

12/100 Fast Score

15-40 kcal

Gummy vitamins

Breaks fast

Usually breaks a clean fast

24/100 Fast Score

Eating window

Break the fast without losing the day.

First meals should be calm, protein-aware, and easy to log.

Greek yogurt protein bowl

Greek yogurt, berries, chia, and a small granola finish.

430 kcal38g protein

Eggs and avocado toast

Two eggs, one toast, avocado, and fruit on the side.

520 kcal28g protein

Chicken rice bowl

Lean chicken, rice, greens, salsa, and olive oil control.

680 kcal48g protein

Salmon potato plate

Salmon, potatoes, cucumber salad, and lemon yogurt sauce.

740 kcal44g protein

SEO engine

Answer the questions people actually search.

View articles

Fasting basics

What breaks a fast?

A practical guide to calories, sweeteners, coffee, electrolytes, and modified fasting.

5 min

Drinks

Coffee while fasting

Black coffee is usually fine. Cream, sugar, collagen, and flavored drinks are different.

4 min

Hydration

Lemon water during fasting

A small squeeze is different from lemonade. Here is the calorie-aware answer.

3 min

Eating window

Best foods to break a fast

Protein, fiber, fluids, and a calm first plate beat a huge first meal.

6 min

Schedules

16:8 fasting schedule

A simple noon-to-8 PM eating window with water, coffee, and a clear calorie plan.

5 min

Schedules

18:6 fasting schedule

A tighter schedule for experienced fasters who already manage hydration and protein.

5 min