Cinder

Watch your body undo it.

A live recovery score, money you didn't burn, and a body that heals on a 90-day arc.

Cinder for iPhone Get the app

iPhone · iOS 17+ · No account needed · Private by design

Backed by CDC + NHS recovery timelines
Cinder app showing the Living Body: heart, lungs, brain and vessels healing
The math

Move the dial. See the burn.

Most smokers underestimate this by half. Slide to your real number.

$2,599
Burned every year
At $9.50 a pack
42
Days of life you'd get back
11 min per cigarette

Estimates use US average pack price and the BMJ Doll/Peto 11-min-per-cigarette figure.

What you'll see

Tonight, your body starts undoing it.

Most people quit blind. Cinder shows the change as it happens — so you keep going.

Living Body

Day 14 — your cilia start growing back.

Heart, lungs, brain and vessels animate through a 90-day repair arc. Tap any system to see what's changing today.

Cinder Living Body — lungs healing on day 5
Apple Health

Your body keeps the receipts.

Heart rate, HRV and sleep pulled from Apple Health, charted against your pre-quit baseline. Proof on day three, not month three.

Cinder receipts — heart rate, HRV and sleep improving
Recovery score

Your number climbs every day you stay clean.

Twelve CDC-sourced milestones, mapped from 20 minutes to 15 years smoke-free. Watch yourself cross each one.

Cinder recovery timeline — milestones unlocking
The biggest stat

Quit before 40 — cut your risk of dying from smoking by ~90%.

It's never too late, but earlier is better. The repair starts within minutes.

20 min
Blood pressure and pulse begin dropping toward normal.
24 hr
Carbon monoxide clears. Heart-attack risk starts falling.
1 month
Lung function climbs up to 30%. Cilia regrow.
1 year
Heart-disease risk is cut in half compared to a smoker.

Sources: CDC, NHS, and a 2013 NEJM cohort study of 200,000 adults.

Honest answers

Things people ask before they tap install.

Does it work for vaping, Zyn, or nicotine pouches?
Yes — all nicotine. You pick your product at setup and Cinder adapts the recovery timeline. Vape users see the lung-specific beats first; pouch and dip users see the oral and cardiovascular beats up front.
What if I slip?
Log it in two taps. Your streak isn't wiped — the slip becomes data you can learn from. Most people slip in the first ten days; the ones who stay clean are the ones who logged the slip and kept going.
How much does it cost?
You see the exact price on day one inside the app — no surprises, no card upfront. Cancel from iPhone Settings in about ten seconds. No email gate, no nag.
What about my data?
Stays on your iPhone. No account, no email, no analytics on your health data. Apple Health data follows Apple's privacy rules and never leaves your device. Read the consumer health data policy →
Start tonight

See your first changes by tomorrow morning.

Quit time is whenever you say so — the body starts repairing within 20 minutes.

Cinder for iPhone Get the app

Built by a small team at Foxtide. Questions or stories?
hello@getcinder.app — we read every message.