Tutor Homepage Styles
Explore four tutor homepage styles with KO/EN switching. Instructor and student details are fictional examples; consultation forms do not send submissions.
HAEMINWAY DEV
Automation and apps
for your work.
I build Google Sheets automations, simple mobile web apps, academy tools and short motion promos. Try the demos to see how they actually work.
- SERVICE
Homepage builds
Responsive pages with the information and contact route your visitors need.
From KRW 350,000 · 10 days View scope and pricing → - SERVICE
Mobile apps
Separate planning documents from actual web app and PWA implementation.
Plan: KRW 10,000 · 5 days; build: from KRW 300,000 · 7 days View scope and pricing → - SERVICE
Workflow automation
Review sheets, recurring tasks, intake screens and AI workflows.
Review: KRW 10,000 · 3 days; build: from KRW 150,000 · 7 days View scope and pricing → - SERVICE
Academy sites and tools
Compare academy homepages with attendance, homework and lesson tools.
Homepage: KRW 350,000 · 10 days; management plan: KRW 10,000 · 15 days View scope and pricing →
DEMOS
Small apps you can try
Only self-made public demos and separate fictional-data rebuilds are shown here.
Daily Quote Card
Draw from 103 bilingual quotes, save a thought and revisit it in your calendar. Add your own quotes. No login; notes stay in this browser.
Habit Streak
Check in daily, see each habit's streak calendar, compare a fictional friends board and save a share card. No login; stays on your device.
Quote & Invoice
Write a quote, send it, turn it into an invoice, mark it paid, then print or save a PDF. Fictional clients; no login; stays on your device.
Tap Ledger
Review and save an expense, see monthly spending, scan a receipt and confirm its amount, then export CSV or print. Fictional data; no login; stays on your device.
Shift Swap
Ask for a shift swap, approve it in manager demo mode, then export or print the roster. Fictional cafe; no login; stays on your device.
VIDEO
See it working
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Let the script wake itself up.
Edits, timers, form submissions. Three ways to start.
Music credit
Kevin MacLeod — Shiny Tech · CC BY 4.0
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Copy. Paste. What broke?
Three spreadsheet mistakes worth checking.
Music credit
WinnieTheMoog — Street Trap · CC BY 4.0
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One form. Fewer tabs.
Follow a form-to-report workflow.
Music credit
Kevin MacLeod — Enter the Party · CC BY 4.0
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Small screen. Big problems.
Three mobile bugs, and what fixes them.
Music credit
Ross Bugden — Black Heat (2026 Mix) · CC BY 4.0
SERVICES
Services
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SERVICE Homepage builds A responsive one-page homepage with course and teacher introductions plus a contact button starts at KRW 350,000 and 10 days. If you need more pages or inquiry features, compare the five-page KRW 900,000 package and ten-page KRW 1,800,000 package. From KRW 350,000 · 10 days See details → -
SERVICE Mobile apps A planning package that lists screens, features, estimate and schedule is KRW 10,000 and five days; it does not deliver an app. An actual request intake app starts at KRW 300,000 and seven days, while a four-screen work web app starts at KRW 490,000 and 18 days. Plan KRW 10,000 · 5 days / build from KRW 300,000 · 7 days See details → -
SERVICE Workflow automation A review of one sheet with an automation plan and estimate costs KRW 10,000 and takes three days. Implementation for recurring tasks starts at KRW 150,000 and seven days; intake screens and AI approval flows use separate packages. Review KRW 10,000 · 3 days / build from KRW 150,000 · 7 days See details → -
SERVICE Academy services A responsive academy homepage with course and teacher introductions plus a contact button starts at KRW 350,000 and 10 days. The KRW 10,000, 15-day academy management package is only an estimate and schedule document, not delivery of a management app. Homepage KRW 350,000 · 10 days / management plan KRW 10,000 · 15 days See details → -
MOTION Motion promo videos 10–15 second promo videos made from your app's screens. Quoted per project See details →
More services Small AI-assisted toolsDesktop setup All services
START SMALL
Start workflow automation with a review
Review one sheet and prepare an automation plan and estimate: KRW 10,000 · 3 days
This package is a planning document; it does not build or deliver an automation program.
Implementation for three recurring tasks starts at KRW 150,000 · 7 days.
HOW IT GOES
Scope → build → check → handover
- 01
Scope
You show me the task; I write down what the tool will and won't do before anything is built.
- 02
Build
I build it inside your Google Workspace or as a small web app, whichever we agreed.
- 03
Check
You run it against the agreed scope. Revision count and scope follow the agreed package or quote.
- 04
Handover
Files, source and a short usage note move to your account.
DEV LOG
Notes from building small tools
English guides on automation, apps and the details that keep small tools useful.
Four Tutor Homepage Styles, Adapted from Live Sites
See four tutor homepage concepts based on site designs that are built and operated today.
Export CSV from Google Sheets without losing IDs or breaking notes
Use the values people see, quote commas and line breaks correctly, and import identifier columns as text so leading zeroes survive.
Preview Google Sheets imports by ID before adding order rows
Compare incoming orders with the sheet by a stable business ID, surface duplicates and conflicts, and review every candidate before anything is written.
Apps Script triggers: 6 traps that make a script run twice, late, or not at all
Simple onEdit vs installable triggers, the 9 AM trigger that runs at 9:40, stacked triggers, and the Status column + lock pattern I use so a repeat run never sends anything twice.
ARRAYFORMULA in 2 minutes: 5 one-liners and the traps that fill your sheet with zeros
One formula in row 2 that fills the whole column: totals, labels, auto IDs, buckets and checks. Every formula ran in a real Google Sheet, including the ones that go wrong.
Google Sheets QUERY cheat sheet: 8 strings I reuse, 4 traps that return nothing
Filter, sort, total per customer, mini pivot and date ranges with QUERY. Every formula ran in a real Google Sheet, including the ones that fail quietly.
Send the task that repeats most.
One sentence is enough — I reply with a written scope and price.