DAESINSolo developer (1인 개발자)

KakaoTalk chatbots, office software, shop websites and web services, built start to finish by one person

If it breaks after launch, I fix it. You see a working test version first, and you pay once you're happy with it.

Ask for a quote See the work first

What you can hand over

Chatbots, office software, websites and web services, shown one at a time on real project screens.

  1. KakaoTalk chatbots Screen recording

    The questions you hear every day, the chatbot answers first

    I add button menus and automatic replies to your KakaoTalk Channel, so the chatbot gives the answers you repeat every day, such as opening hours, directions and booking details. The video shows a chatbot made for a school health room.

  2. Office automation software Screen recording

    1,306 register photos into one Excel sheet

    Pick a folder of building register photos, and it reads each owner's name and address into Excel. I refined it by checking 305 registers against the originals, field by field.

    Only registers flagged for violations, owners includedAbout 17 min
    Reading every registerAbout 59 min

  3. Shop websites Screen recording

    Websites made for the phone first

    I start with the phone screen, because that is where customers look you up. Words go in as real text rather than inside images, so Naver and Google can find them.

    See all website work

  4. Daesin home screen, with the line “We'll sort out the tedious stuff for you”

    Web services Screenshot

    A web service with sign-in and notifications

    Daesin (대신) is a service I planned and built on my own. Describe a chore such as a refund or a cancellation, and AI sets out the documents you need and what to do next.

Work

Open a card for the details and how it was made.

Work by platform

The platform each project runs on, and the tools behind it.

  1. KakaoTalk

    Kakao i Open Builder, Node.js, MessengerBot R

  2. Discord

    Python, Discord slash commands

  3. Windows

    The photos never leave the PC

    Python, OpenCV, Tesseract OCR, openpyxl

  4. Chrome

    A built-in decoder opens iPhone videos on PCs that can't

    Chrome extension (Manifest V3), WebAssembly, gifenc

  5. Web

    Next.js, Supabase, Tailwind CSS, Playwright

Services and prices

These are starting prices. I'll hear what you need and tell you the final price before any work begins.

KakaoTalk Most requested

Shop inquiry chatbot
From KRW 150,000
Channel button menu and automatic answers to common questions, connected through Kakao i Open Builder
AI answers add-on
+KRW 100,000
Answers questions that have no set reply, using only the shop's own information (AI usage fees extra)
Open chat manager bot
From KRW 50,000
Attendance, inactive member checks, word-chain and initial-consonant games (needs a spare Android phone)
Order and booking AlimTalk
From KRW 300,000
An automatic KakaoTalk notice to the customer when an order comes in (set up under the shop's business registration)

Discord

Bot build and server setup
From KRW 100,000
Attendance, levels, announcements, stream alerts, warning and timeout management, channel and role setup

Websites and automation

Shop website
From KRW 200,000
A 1 to 3 page website, registered with Naver and Google search
Office automation program
Quoted after consultation
Office work repeated every day, such as sorting photos or totaling Excel sheets

Monthly upkeep at KRW 30,000 covers menu and price changes and outage response.

I don't take work that breaks terms of service or the law, such as macros that secretly operate personal accounts, or ticketing and game automation.

How it works

You see the finished test version before you pay.

2 to 4 days
until you see a test version of a basic build
2 weeks
of free bug fixes after launch
Pay last
only after you've checked the test version

  1. Consultation

    I ask about your business, the features you want and the platform you'll use.

  2. Quote

    I set out the scope, the price and the schedule.

  3. Your details

    You fill in a form with your opening hours, menu and common questions.

  4. Build and test

    For a basic build, you see a test version within 2 to 4 days.

  5. Launch and payment

    I make your changes and connect it to your real channel, and then you pay.

  6. Aftercare

    Any bug that shows up in the first 2 weeks after launch is fixed free.

Review on Soomgo

Whatever the job, I strongly recommend working with this person. They sent a first draft before we started, which helped a lot with my decisions. Above all, they respond very quickly and are kind about change requests, without the slightest hesitation. … The final result was also a big step up from the first draft. … Their specialty is development rather than web design, so I was a little worried at first, but there was no need. … From now on, whenever there is any work to hand off as I keep things running, I plan to ask this person first.

박**, Verified-payment review on Soomgo, web design, Translated from Korean
  • Good after-sales support
  • High-quality results
  • Quick to respond
  • Shares progress often

See it on Soomgo (opens in a new tab)

Is there something
you'd like built?

Tell me your line of business and the features you need. I'll reply with how it can be done and a quote.

I usually reply within an hour. A chatbot usually takes 2 to 3 days, a website about a week.

Get a quote (Soomgo profile, opens in a new tab)

On Soomgo, open the 「1인 개발자」 (solo developer) profile and tap 견적 요청하기 (request a quote).

Ask in the KakaoTalk open chat (KakaoTalk open chat, opens in a new tab)

You're welcome to write in English, through Soomgo or the KakaoTalk open chat. Soomgo's pages are in Korean.

Put your request together

Eight short questions, one at a time. At the end you copy a summary and paste it into Soomgo or the KakaoTalk open chat. This page does not send your answers anywhere.

Privacy
  • Only what you enter here: type of work, purpose, features, reference links, budget, timing, best time to reply and any extra notes. I don't ask for your name, phone number or email.
  • It is used only to build the summary you paste into Soomgo or KakaoTalk.
  • This site does not send your answers anywhere or store them on a server. While you write, they stay only in this browser, and they are deleted after 7 days or when you press Clear my answers.
  • Your answers leave this browser only when you paste and send them yourself on Soomgo or KakaoTalk. From then on, Soomgo's and Kakao's privacy policies apply.
  • Nothing you type here is sent to analytics tools.

If you already know what to write, send it directly.

Request a quote on Soomgo (Soomgo profile, opens in a new tab)Ask in the KakaoTalk open chat (KakaoTalk open chat, opens in a new tab)