A ₩29,000 "hairstyle consultation report": a one-person Korean app that started charging before reaching a thousand installs

In October 20, a Korean user left WantHair a five-star review on the App Store: "Used it once before an interview, found a hairstyle that suits me, and only then went to the salon." The app changes your hairstyle, but what it really sells is a report: you upload a front photo and a side photo, and it tells you your face shape, which hairstyles suit you best, and which ones you should never cut, all rendered on your own face, priced ₩9,900 to ₩59,000. It's made by one person, and by Nov 6 it had only 924 installs on Google Play. It hasn't blown up, but it found something many hairstyle apps missed: Koreans are already willing to pay for "hairstyle consultation." Below: what it sells, how it charges, how small the volume is, and whether you can do it in another market.

First, how small it is

On Google Play, it launched in October 11. By Nov 6 it had 924 installs total, 7 new installs in the last 368 days, and it has charted only in the Korean store. In the Korea Beauty Top Free chart it climbed from #25 on 10-31 to #4 on 11-06, sitting alongside Gangnam Unni and Hwahae, which have millions of installs each. That chart measures recent velocity, though: a hundred installs a day is enough to break into the top five.

On 11-06 it was still at #1 on the Korea Beauty Top Grossing chart. Don't read too much into that: the whole chart had only this one app that day, and before that it had been empty every day. In small countries and small categories, the top-grossing chart often returns only a row or two. Ranking #1 only means someone paid that day.

The real home turf is iOS. The iOS version went live in July 29, two and a half months before Android. Developer listed as JEONG JOON. It has never entered the overall free chart, but it has charted in Korea's Lifestyle Top Grossing: #139 on 10-28, #58 on 10-31, #50 on 11-05, #66 on 11-06. Ratings went from 4 at the end of October to 11 by Nov 6, all five stars. Based on the rating growth, iOS downloads are only a few hundred. Ranking #50–#80 on Korea's Lifestyle Top Grossing roughly corresponds to a few hundred thousand won a day in revenue (estimate, unverified). That's enough for a side project run by one person, and far from a hit.

So it's worth watching not for the volume, but because with so few installs, it stays steadily on the top-grossing chart. That means each person who comes in pays a fair amount.

What it actually sells

Opening it shows two features.

One is "Hair Simulation": pick a style from the catalog or your photo album, take a front photo, and the AI swaps the hair onto your face. Drag the slider to compare before and after. This uses "가위" (scissors) credits: a few free to start, then buy more: 50 for ₩2,000,100, ₩3,500,200, ₩5,500.

The other, and the main revenue source, is the "Hair Consulting Report." After payment you take a front photo and a side photo. It determines which of six face shapes you have, gives your "3 best-matching combinations," explains how to style the fringe, side hair, and crown, and lists "styles to avoid." Every point is rendered on your own face. The in-app purchases listed on the Korean App Store page include several tiers: ₩9,900, ₩19,000, ₩24,000, ₩29,000, ₩59,000 (the store page doesn't say which tier gets which content).

A review from Nov 1 captured what users care about most: "Other apps retouch your whole face, which looks very AI. This one only changes the hair, and it's still my face."

The underlying approach is no secret. The store description says so directly: photos are "sent to the OpenAI API" for AI rendering. The effort goes into the photo step: real-time prompts for face position, angle, lighting, whether eyebrows and ears are covered, and an automatic capture when you turn to the side. The October 28 version added "ten conditions checked item by item against example photos." Reports come back within 24 hours, with a manual review in between. If a photo fails, you're told why and asked to retake it, with no charge. All of this guards against one thing: a bad generation that makes the user feel they wasted money. Keeping all 11 ratings at five stars is probably how they held that line.

Why so few people installing can still bring in money

Because Koreans are already paying for this. "Face shape diagnosis" and "personal hair consulting" are an established offline business in Korea. A session at a studio costs ₩70k to ₩135k, and online AI image consultations run around ₩99k (prices from Naver blogs and studio posts). WantHair set its price at ₩29,000, with the booking price at ₩9,900. To the user, this doesn't feel like "paying for a filter." It feels like a consultation at two-thirds off.

This is also its biggest difference from the many AI hairstyle apps out there. Those sell fun, on weekly subscriptions, and buy installs to grow. This sells a conclusion, anchored to offline prices.

Where users come from

Nearly all of its audience was built by itself on Instagram.

In Sep 11, the official account @wanthair_official posted a Reels whose cover read: "Personal Hair Report, planned price 29,000 won → pre-booking special price 9,900 won", with the caption "Don't find your life hairstyle by feeling, find it with data." The same day the app was updated with a booking entry on the homepage. Another post used the comment-to-get-the-link format: "Comment and I'll DM you the link." By Oct 10 the report feature officially launched. People who had booked enter a coupon code in the app to unlock it at the booking price. Free report coupons were also handed out.

This pre-collected group was its first wave of paying users after launch, and it's the most likely reason it jumped from #139 to #58 on the iOS Top Grossing chart between 10-28 and 10-31 (inference).

Other channels are weak:

• A hair stylist reposted it, unverified. A stylist in Gangnam posted a "퍼스널 헤어 진단 이벤트" (personal hair diagnosis event) on Oct 29. The search snippet wording matches its booking copy, but the full post isn't visible, so it's unclear whether this was a partnership or just a repost.
• Ads, none found. The Meta Ad Library shows no ads for it. Its post engagement is very low (that Oct 27 post had 8 likes and 0 comments), which looks more like organic posting than paid distribution.
• Store search, a little. The title stuffs in search terms directly: "원헤어 - 헤어 컨설팅, 원하는 헤어스타일 시뮬레이션".
• TikTok, X, media: nothing. Searching "원헤어" only returns one hair salon with the same name.

Who it's competing with

Changing your hairstyle is one of the most crowded categories on Google Play in 2026, with five-plus new apps this year that hit the million-install mark. 원헤어 didn't squeeze into that race, it sidestepped it: it doesn't compete on installs, it competes on price per user. But its moat is shallow. The engine underneath is an image API anyone can plug into, and SNOW is already doing the same thing with celebrities.

If it were you

One-line verdict: This is a small sample of "repackaging a paid filter as a cheap professional service." Don't try it in Korea's home market. The smart move is to switch to a market that also pays for "face shape / bone structure diagnosis" and run the same playbook.

Who it suits: a small team of one or two people with some background in hair or image work, who can produce Instagram content and accept a small business earning a few thousand to ten or twenty thousand dollars a month at first. Who it doesn't suit: anyone who wants to buy installs to grow. In this category the money is in the unit price, not the volume. It also doesn't suit anyone who wants to take on SNOW × 차홍 head-on in Korea.

How to do it: Japan is the smoothest route. Japan has an established habit of paying for "骨格診断", "顔タイプ診断", and "ヘアカウンセリング". Offline sessions run roughly a few thousand to over ten thousand yen per session (estimate), so you could sell a report at ¥1,500–3,000 each. The product has three parts: tighter photo quality checks (angle, lighting, occlusion, automatic side capture), a clear report structure (face shape name, three best-fit styles, styles to avoid, how to style each area), and a free retake when generation goes wrong. Make the result something users can show directly to their stylist. That's how people will actually use it. Taiwan and the US "face shape haircut" audience are also worth testing, but in the US it's already a paid-acquisition battlefield full of English hairstyle apps.

How to get users: copy the most effective step. Before launch, post "list price ¥3,000 → booking price ¥980" on Instagram (in Japan, add TikTok and X), use comment-to-get-the-link to build a list, then send coupons on launch day to concentrate the first paying users within one week, aiming for the local lifestyle or beauty top-grossing charts. Partner with a few small hair salons too, and give their customers free coupons so the salon can discuss the style with the report in hand.

When to move: the sooner the better. The cost of image generation keeps falling, and ChatGPT and Gemini can already produce seven or eight out of ten of these images themselves. In another six months to a year, "take a photo and I'll tell you what hairstyle suits you" could be a free button inside a large model or a beauty camera app. The window is roughly before the first half of 2027.

What would show you're wrong: WantHair itself is the best indicator. If by late November, after booking users finish their reports, it drops out of the Korea iOS Lifestyle Top Grossing chart to #100 or lower, that means the booking list was the whole story and organic payments can't sustain it. If you post a booking campaign in Japan and can't collect a few hundred bookings in two weeks, that means the "report" mindset doesn't hold there. Don't force it.