SJ System
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Case Studies

We don't stop at planning and development — we build services that run every day in the real world. From a complete package of website, AI chatbot, booking & payments and admin system to a website with a chatbot on top, every project here is live.

AX Consulting · Website · AI Chatbot · Reservations & Payments · Admin — full digitalization of the property

Yangju JamJam Glamping & Caravan

This case began with AX Consulting. We first diagnosed the property's daily operations to find where time was being lost, then moved that work to AI and systems. SJ System took on the entire online presence: we built a new website, answered inquiries across 4 channels 24 hours a day with STAYTOQ, our in-house AI chatbot, and enabled direct reservations and payments through StayPay, our own payment system. The guest journey — finding the property, asking questions, booking and paying — and the admin system the owner uses to manage all of it run on a single system built by one team. Since May 2026, we have handled a cumulative 2,718 inquiries together, giving back the time the owner used to spend on responding, settlement and scheduling, and improving operational efficiency and productivity.

770 chats
Auto-replies in August
96.4%
AI response rate
38.5 hrs
Response time saved in August
448 Q&As
In the knowledge base

Challenge

  • Inquiries arriving late at night or early in the morning were missed and never became reservations
  • The same questions about check-in, parking, barbecue and refund policies came up every day
  • Scattered channels such as Naver TalkTalk and KakaoTalk had to be checked one by one
  • The website, inquiries, reservations and payments were all separate, so guests dropped off midway
  • Reservation checks, settlement and cleaning schedules were scattered across spreadsheets and notes, repeating the same tidy-up work every day

Solution

  • ⓪ AX Consulting — diagnosed daily operations hour by hour, separated what AI would take over, what the system would automate and what the owner would keep doing, and set the order of transformation
  • ① Website — redesigned rooms, amenities, nearby attractions and directions, and brought the booking path to the front
  • ② AI Chatbot — STAYTOQ, built for the lodging industry, providing unified responses across 4 channels (web, Naver TalkTalk, KakaoTalk, Instagram DM)
  • ③ Reservations & Payments — StayPay, our own payment system, directly handles overnight and day-use products, real-time booking, cancellation and refund policies, and reservation lookup
  • ④ Admin System — the owner manages chatbot answers, reservation status, check-in/out, cleaning schedules, settlement and even the website from a single screen
  • Answers only from information the owner has confirmed, and automatically redirects to phone or reservation guidance when there is no basis for an answer
  • "Auto-learning": each week the AI finds weak answers, and the owner trains it with a single click

“I used to miss every TalkTalk inquiry that came in overnight, but since we added STAYTOQ, by the time I wake up in the morning the replies have already gone out. Guests get answers right away, so our booking conversions have clearly gone up.”

— Owner of Yangju JamJam · STAYTOQ Official Partner No. 1
Product details →Yangju JamJam Website ↗Reservation & Payment Page ↗STAYTOQ Admin ↗

* Based on public data from Yangju JamJam Glamping & Caravan, which is live today.

Reservation & Payment Page Development · In-house Payment System StayPay

Yangju JamJam Glamping & Caravan — StayPay Reservations & Payments

We built the direct reservation and payment page for Yangju JamJam Glamping & Caravan on StayPay, SJ System's own payment system. Overnight and day-use products are brought together on one screen: when guests choose a date and party size, they can immediately see each room's rates, capacity and hours of use, and complete their reservation and payment on the spot. StayPay is STAYTOQ's reservation and payment service and runs on the same system as the website and AI chatbot.

Challenge

  • With overnight and hourly (day-use) products mixed together, it was hard for guests to compare products and rates at a glance
  • The property had no channel for taking reservations and payments directly, so inquiries didn't turn straight into bookings
  • Cancellation and refund policies and reservation confirmations had to be explained separately by phone or message every time

Solution

  • Organized overnight stays in large caravans and duplex wooden cabins, and day-use products such as the party room, The Mongol Tent and rooftop canopy, on a single page with All, Overnight and Day-use tabs
  • After choosing dates and party size, guests can check each product's standard and maximum occupancy, minimum stay, hours of use (4 or 5 hours between 09:00 and 24:00) and rates, then book and pay in real time
  • Reservation lookup, cancellation and refund policies, terms of use and privacy policy provided on the same page
  • Includes the business disclosures a payment page requires, such as the mail-order intermediary notice and seller information
Product details →pay.staytoq.com/yangjujamjam ↗
Website Development · STAYTOQ AI Chatbot

Goeunheuk (Pure Raw Red Clay Manufacturing & Supply)

SJ System planned, designed and developed the website for Goeunheuk, which manufactures and supplies raw red clay (hwangto) from a clean region of Boryeong, South Chungcheong Province. The site presents product specifications, applications and red clay path installation cases in a single flow, and includes STAYTOQ, our in-house AI chatbot, so inquiries are handled 24 hours a day.

Challenge

  • With no online channel to show product specifications and applications, everything had to be explained from scratch over the phone each time
  • Required grain sizes and quantities differ by use — red clay paths, fish farms, plastering and more — so consultations ran long
  • Installation photos were scattered, so they couldn't be used to build trust

Solution

  • Built a website organizing products and grain sizes (1.5, 2.5, 5mm) by use — from 20 and 25kg small bags to 500kg and 1-ton bulk bags and red clay–decomposed granite blends
  • Provided applications such as red clay paths, EM clay balls, water purification, fish farm application, plastering/ondol/hanok roof tiles and livestock barns, along with an installation gallery and a product brochure PDF
  • Installed STAYTOQ, our in-house AI chatbot, to answer inquiries about specifications, quantities and delivery 24 hours a day and connect to phone consultations
  • Designed mobile optimization together with search (SEO), directions and click-to-call paths
Product details →고은흙.com ↗
Hybrid Web App Development · Outsourced by JudoSystems · In Development

CallPop

An O2O platform for discovering and recommending local restaurants, being developed by SJ System at the request of JudoSystems. We are building it as a hybrid web app that ships Android and iOS apps from a single web codebase, bringing together themed folder curation, personalized recommendations and partner-store advertising in one place to connect customers with neighborhood shops.

Challenge

  • Local small businesses lack channels for online visibility and promotion
  • Customers have to search and compare every time they wonder what to eat today
  • There is no single place to see scattered restaurant information and reviews at a glance

Solution

  • Developed on a hybrid web app architecture that builds the web and Android/iOS apps from a single codebase
  • Built a place database and reviews by category, including Korean, snack food, cafés, desserts, Japanese, tonkatsu and Chinese
  • Provides "Theme Folder" curation and one-second personalized "What should I eat now?" recommendations
  • Supports small-business marketing through partner-store ads and banners and district-level (merchant association) exposure
dev.callpop.co.kr ↗JudoSystems ↗