The number doesn’t care about your feelings.
Weigh in every morning, log every bite and sip, and Chonk reads you the numbers. Out loud. No rounding down.
7 days free, then $9.99/month. Cancel anytime. 18+.
Three numbers a day. Zero excuses.
That’s the whole app. You feed it numbers, it hands back the truth.
- 1 · Step on the scale88.7
Every morning, before food. Today stays locked until you do. Skip it and your streak resets in public.
- 2 · Log every bite1,660
Snap it, type it or say it. Drinks too. That “small” latte was 240.
- 3 · Chonk reacts12 days
He puffs up when you gain, slims down when you lose, and pushes you when the fridge opens after 21:00.
Every bite gets a number. Even the ones you forgot.
Type it like a text and the whole meal lands at once. No portion pickers, no steppers, no confirm screen.
- McNuggets ×10
- 410
- Medium fries
- 320
- Large Coke
- 290
- SnapPhoto in, kcal out.
- TypeWrite it like a text.
- SayTap the mic, talk, logged.
Chonk’s size is your scale. Literally.
He doesn’t do vibes. He does kilos.
“Down 0.4. Look at you, actually listening.”
“+0.7. That 11pm burrito didn’t log itself. Oh wait, you didn’t either.”
- 07:00 push“Scale. Now. Chonk is waiting.”
- 14:00 push“Lunch not logged. Chonk assumes the worst.”
- 21:30 push“Fridge hours are over. Close it.”
- SundayWeekly report. Every gram of it.
Brutal tone. Responsible numbers.
Chonk roasts your habits. Your target comes from your height and BMI, with hard limits he can’t talk his way around. Here’s Sam’s, worked out in full.
88.7 kg at 175 cm. Healthy is 18.5–24.9.
Sam’s goal: 76.0 kg, BMI 24.8.
BMI 24.8. Healthy range 56.7–76.3 kg.
Max 0.89 kg a week for Sam. He picked 0.5.
Men / women. The budget never goes under.Never under. Sam’s is 2,000.
- Chonk roasts here · Sam 88.776.3+
- Healthy · goals live here61.3–76.3
- Never suggested (BMI < 20)56.7–61.3
- Never (BMI < 18.5)< 56.7
At goal, one question: “Do you like how you look?”
Say no with a BMI still at 25 or above, and Chonk says it: “Then you’re still fat.” With the number as proof. Say no at a healthy BMI and he refuses to take you lower. Or pick Keep my weight: a ±1 kg band, and the budget drops until you’re back inside it. Underweight? Pick Gain weight: the budget becomes a target to eat up to, and Chonk stops at BMI 24.9.
When the numbers turn dangerous, the roast stops.
Eating under the floor for days, losing too fast, or underweight? Chonk goes soft and caring, and a “Talk to someone” button appears. That line is the reason the brutality is OK.
One more number. Here it is, straight.
No tiers, no add-ons. Everything is in.
- Daily weigh-in, streaks, trend line
- Snap, type or say your food
- Safe target and calorie budget
- Chonk, pushes and the weekly report
- Phone (add to home screen) and desktop
after 7 days free
- FreeDays
1–7 - $9.99Then
monthly - CancelAnytimeanytime
- Weigh-in, streaks, trend line
- Snap, type or say your food
- Safe target and calorie budget
- Chonk, pushes, weekly report
Cancel anytime in Settings. Sign in with Google or a 6-digit email code. 18+.
Straight answers
Why every single morning?
One weigh-in a week hides everything. Daily, same time, before food: the trend is the truth. Skip a day and the streak resets.
Is Chonk really this rude?
About habits and numbers, yes. Never about your body, race, gender or disability. Never when you're at risk.
Can I use it to gain weight?
Yes. Pick Lose weight, Keep my weight or Gain weight. In Gain, the daily number is a target to reach, the pace tops out at 0.5% of you a week, and the goal never goes past BMI 24.9.
When am I charged?
The first 7 days are free, then it's $9.99/month. Cancel anytime.
Do I need a smart scale or an app store?
No. Any bathroom scale; type the number in 10 seconds. fatfatfat runs in your browser, add it to your home screen for the morning push.
Tomorrow, 07:00. You, a scale, and a number.
Find out what it says. Chonk already has an opinion.
7 days free, then $9.99/month. Cancel anytime. 18+.