How Much Does a LINE-Integrated App Cost?

“How much does it cost to build an app that integrates with LINE?”
Many business owners and developers ask this before starting.

This article clearly explains the average development costs of LINE-integrated apps from a professional's viewpoint.
From simple bots to booking and payment features, we'll share real examples and cost-saving tips.

Read this guide to avoid common pitfalls and prepare your budget wisely.

Typical LINE App Development Costs

Summary: Costs range from 0 to ,000+

Common types and estimated cost (EN)

• Notification-only bot: $500 – $2,000
• Chatbot with webhook: $3,000 – $8,000
• LINE login + backend app: $8,000 – $15,000
• Booking/payment-enabled LINE system: $20,000 – $30,000+

Government data:

According to METI Japan, average small business app cost is about 1.8 million yen.
Source: https://www.meti.go.jp/policy/it_policy/jinzai/itjinzai2023.html

Core Technologies Used in LINE Integration

Summary: Learn LINE Messaging API, Webhooks, and LIFF

• Use LINE Developers Console to issue channel credentials
• Handle messages with LINE Messaging API
• Use webhooks to pass data to your server
• Add LINE Login for authentication
• LIFF lets you create UI apps inside LINE

Sample (Python Flask)

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

Common LINE App Use Cases

• Notification bot for internal use (like Slack)
• Reservation system (eg, hair salons) via LIFF + calendar API
• Order system with LINE Pay for restaurants
• Event check-in using QR code + message push

5 Ways to Reduce Development Cost

• Start with just the Messaging API
• Use LIFF templates for faster UI
• Connect with Google Apps Script
• Use Firebase for serverless backend
• Try automation tools like Zapier

Common Errors and Fixes

Conclusion: Cost Depends on Scope and Purpose

• LINE app cost Varies by feature complexity
• Notification bots are affordable, payment apps are costly
• Define your goals and trim extra features to control costs