How much does it cost to develop a LINE integrated app?

"I want to create an app that links with LINE, but how much will it cost?"
There are many people who feel this way.

In this article,A professional explanation of the average development costs for LINE-linked appsI will.
From simple notification bots to reservation, ordering and payment systems,We also introduce costs and development examples for different purposes..

We also summarize pitfalls to be aware of before development and ways to reduce costs.

Average development costs for LINE-linked apps

Conclusion: Prices range from 50,000 yen to 3 million yen

Common configurations and price guideline (Japan)

• Notification-only bot: 50,000 yen to 200,000 yen
• Chatbot + Webhook integration: 300,000 to 800,000 yen
• Web system with LINE login function: 800,000 yen to 1.5 million yen
• Apps that allow ordering and payment via LINE: 2 million to 3 million yen or more

Public data sources

According to a survey by the Ministry of Economy, Trade and Industry,The average development cost for a business app is about 1.8 million yen (for small and medium-sized enterprises).
Source: https://www.meti.go.jp/policy/it_policy/jinzai/itjinzai2023.html

Technologies used in LINE app development

Conclusion: Understanding the LINE Messaging API and Webhooks is important

• Publish a channel on the LINE Developers console
• Reply to the user with the Messaging API
• Connect to the server via Webhooks
• User authentication via LINE Login
• UI can also be provided using LIFF (LINE Front-end Framework)

Development example (Python)

from flask import Flask, request import json app = Flask(__name__) @app.route("/callback", methods=['POST']) def callback(): body = request.get_data(as_text=True) print("Received:", body) return "OK"

Common development patterns and construction examples

• Internal contact notification bot → Easier than Slack integration
• Reservation management (beauty salon, etc.) → LIFF + Calendar API
• Order reception (restaurants, etc.) → LINE Pay integration
• Event registration and participation confirmation → Manage with QR code

5 ways to reduce development costs

Conclusion: Partial development without outsourcing + template utilization is the key

• Start with a bot using only the Messaging API
• LIFF UI uses templates
• Reduce costs by integrating with Google Apps Script
• Serverless operation in combination with Firebase
• Use with no-code tools (such as Zapier)

Common errors and solutions

Summary: Costs vary depending on purpose and scale

• How much does the LINE linked app cost?Varies greatly depending on contentI will
• Notification bots are inexpensive, but those with payment functionality tend to be expensive
• Clarify your purpose,Narrowing down the necessary functions is the first step in cost reduction.is