Real merchants. Real numbers.
We publish the full picture — what worked, what didn't, and how long it took. Everything you'll read here is from a merchant who let us show their numbers.
Every case study below is a working joayo merchant. The numbers are theirs. The words are theirs. We just helped them put the story together.
- BakeriesGangnam
Bonjour Bakery
+42% weekday afternoon covers in 8 weeks
A classic Sinsa bakery fought a quiet 14:00–17:00 slump. With one targeted offer, afternoons now run at nearly the same volume as mornings.
- laundrySeoul
Jongno Neat Laundry
Won back office regulars with a 5-items-a-week bundle
A 22-year-old Jongno dry cleaner watched its office regulars defect to laundry apps. A weekly bundle at 25% off brought them back — and locked in revenue the owner could actually plan against.
- BarsGangnam
Maison Dain
Empty 18:00–19:30 midweek window filled in 6 weeks
A small Apgujeong wine bar ran dead from opening to 21:00 on weekdays. A simple 'first glass on us' offer turned the shoulder hour into its steadiest revenue band.
- eyelashGangnam
Sohee Lash Atelier
One-time lash visits turned into a scheduled 4-week cycle
A Cheongdam lash studio stopped chasing bookings and let joayo run a 4-week reminder loop. Repeat visit rate went from 38% to 79%.
- RestaurantsHongdae
Hongdae Noodle Bar
Rebuilt late-night traffic after a 14% rent hike
When rent jumped, the math stopped working. A joayo-powered late-night window rebuilt the after-midnight covers they needed to stay open.
- CafésSeoul
Paper Heart Café
Rebuilt evening revenue after a 22% rent hike — and spun off an anti-waste line
A Yeonnam indie café was losing its evenings after a rent jump. End-of-day surprise bags did not just plug the hole — they became a product line on their own.
- bookstoreHongdae
Margin Bookshop
Daily visitors doubled, book sales up 42% in a quarter
A Hongdae indie bookshop was losing ground to rising rent and fewer walk-ins. A pourover-and-book combo plus a punch card brought the shop back to life.
- SalonsGangnam
Salon Jihye
Tuesdays and Wednesdays became the second-busiest days of the week
An Apgujeong salon stuck with a classic mid-week slump turned Tue–Wed into their second-highest revenue days with a single 15% weekday-only treatment offer.
- CafésSeoul
Paper Cup Coffee
End-of-day pastry waste cut from 18% to 4%
A Seongsu café stopped throwing away a sixth of its daily pastry production by turning the problem into a product.
- RestaurantsBusan
Jaehyun Bibimbap
Weekday lunch margin up 31% by pulling covers off delivery apps
A 2-person family bibimbap shop in Seomyeon was bleeding margin to Baemin and Coupang Eats. An in-store-only weekday lunch offer rebuilt walk-ins with dramatically better unit economics.
- petSeoul
Mapo Paws Grooming
Tuesday–Thursday bookings rose from 30% to 82% capacity
A Mapo groomer was turning people away on Saturday and cutting three dogs a day on Wednesday. A weekday-only discount redistributed bookings evenly and created room to hire.
- nailSeoul
Yujin Nail Studio
From losing 60% of regulars to 180% of pre-pandemic bookings
An Itaewon nail studio that lost most of its regulars during the pandemic rebuilt its book using joayo first-visit offers and a small loyalty hook — and ended up larger than before.
- BakeriesSeoul
Seungho's Oven
+28% daily covers by activating the dead 10am–12pm hour
A Sinchon commute-hour bakery had a strong 7–9am but dead mornings after. A 'between-rush set' pulled in university staff and post-commute parents — and evened out the day.
- GrocerySeoul
Seongdong Fresh Market
Turned cosmetic-reject produce into 30–40 boxes a night
A Seongdong produce stall was eating wholesale-level losses on bent cucumbers and scarred tomatoes. A ₩6,000 'misfits box' at 7pm turned the waste pile into a second revenue stream.
- pilatesSeoul
Eunji Reformer Studio
Empty morning reformer classes filled with a new freelancer crowd
Morning reformer pilates classes in Yongsan ran with 1-2 people for months. A weekday-only drop-in pass at 40% off built a consistent morning regulars crowd of freelancers and shift workers.
- massageSeoul
Jiwoo Deep Tissue
The dead 13–17h window became the most-booked window
A Hannam deep-tissue studio had empty afternoons and overflowing evenings. A targeted 25% weekday afternoon offer flipped the pattern completely.
- dessertSeoul
Snow Oven Seongsu
April–May and October–November revenue up 2.3×
A Seongsu bingsu shop lived on three summer months and half-starved the rest of the year. A seasonal menu cadence — spring matcha-strawberry, autumn persimmon — flattened the year into something a lease can survive.
- flowerSeoul
Mangwon Flower Room
Weekly waste cut from 40% to 8% on unsold bouquets
A Mangwon florist was throwing out nearly half her weekly stock. A 90-minute end-of-day window rebuilt margins and brought her neighbors through the door on their way home.