Most curly hair advice is written for someone else’s hair. Coil builds a routine from yours — curl type, porosity, density, scalp — then learns what actually works from a 20-second check-in each day.
Curls change with the weather, your water, your sleep and whatever you put on them. Coil keeps track of all of it so you can stop guessing.
Thirteen quick questions — curl pattern, porosity, density, scalp, chemical history, how you dry, what you want. Low porosity gets a different wash day than high porosity. A dry scalp gets an oil step. Your plan re-shapes around what you actually did, not what you meant to do.
Add a selfie when you check in and Coil reads frizz, definition and moisture straight off the photo. Correct anything that looks off — you see things a camera can’t. It all rolls into one curl score you can actually track.
Snap an ingredient label. Coil flags sulfates, drying alcohols, silicones and waxes, then scores how compatible the product is with your hair — build-up risk, protein load, and whether it will weigh your curls down.
Harsh on medium-porosity curls. Expect dryness and frizz by day two.
A photo timeline and curl-score trends show the slow stuff — the grow-out, the frizz that finally calmed down, the product that quietly made things worse. Plus trim reminders, so the next cut never creeps up on you.
Every 8 weeks · last cut 6 Aug
Curl type, porosity, density, scalp, length, wash days, habits and goals. About two minutes, and you can change any answer later.
Tick off what you did, rate how your curls feel, add a selfie if you like. That’s the whole check-in, and everything else runs on it.
Coil lines your curl score up against your products and habits, so the routine gets sharper — and your shelf gets smaller.
Definition is what you look at in the mirror, so it carries the most weight. Frizz and moisture are the levers that move it. Watch the number and you’ll see — within a couple of weeks — which wash day, which leave-in and which drying method your curls actually prefer.
Less than one bottle of the wrong conditioner. Cancel any time in your Apple ID settings.
About $1.92 a week
Flexible, cancel any time
US prices shown. New subscribers get three days free; the App Store shows your exact price and offer before you confirm.
A plain-English 2A–4C chart, the strand test that works, and why your curl type matters less than you think.
Why the glass-of-water test is unreliable, and three better ways to tell low from high porosity.
The six things a curly hair app should do, and an honest look at how Coil handles each one.
Short curls, grow-outs and fades: the five-minute routine, and the one product most guys skip.
Frizz is a symptom. Here are its seven usual causes, ranked, with a fix for each.
A wash schedule for wavy, curly and coily hair, and what to do on the days in between.
No. Coil started with men who have short cuts and grow-outs, because most curly hair advice ignores them, but the routine engine reads curl pattern, porosity, density and scalp — it has no idea who is holding the phone. It works for wavy, curly and coily hair at any length, from a fade to waist-length.
Wavy (2A–2C), curly (3A–3C) and coily (4A–4C). If you are not sure which you are, the onboarding quiz describes each one in plain words, and our curl type guide walks you through it.
Add a selfie when you check in and Coil reads frizz, definition and moisture from the photo. You can correct anything it gets wrong — you can feel things a photo cannot — and the scores feed your curl score and trends.
Photograph an ingredient label and Coil flags what matters for curls — sulfates, drying alcohols, silicones and waxes — then scores how compatible the product is with your hair. Over time it also tallies how your curls actually did on the days you used each product.
Coil Pro is $6.99 a week or $99.99 a year (about $1.92 a week). New subscribers get a three-day free trial, and you can cancel any time in your Apple ID settings. Prices may vary by country; the App Store shows your local price.
Not yet. Coil is on iPhone today.
Download Coil, take the two-minute quiz, and get a routine that’s actually about your hair.
Download on theApp Store