Have you ever had a headache figuring out how to split expenses after a trip?

Who pays for the hotel, who buys food, who fills up gas — in the end, no one remembers clearly, and the calculations never seem to add up. chiatien.net was created to address just that issue.

Key features:

• ✅ Enter the list of group members
• ✅ Record each expense & who paid
• ✅ Automatically calculate who owes whom and how much
• ✅ Clear and transparent results — no need for Excel, no need for a calculator
• ✅ Completely free, usable right in your browser

With just a few steps, everyone in the group knows who needs to transfer money to whom. Simple, quick, and fair.

1️⃣ Explanation of the calculation logic for splitting expenses

How does chiatien.net work?

Suppose a group of 4 people goes on a trip:

• An pays for the hotel: 800,000 VND
• Bình pays for food: 400,000 VND
• Chi pays for gas: 200,000 VND
• Dung hasn't paid anything

Total expenses: 1,400,000 VND → Each person needs to pay: 350,000 VND

The system automatically calculates and provides the optimal result:

• Dung transfers to An 350,000 VND
• Bình transfers to An 100,000 VND (because Bình has already paid 400k, only missing 50k... the system optimizes the number of transfers)

The algorithm minimizes the number of transfers — instead of everyone transferring money to each other chaotically, chiatien.net finds the shortest way to balance the finances of the whole group.

2️⃣ Use cases beyond travel

chiatien.net is not just for travel — whenever there are shared costs in the group, this tool is effective:

• 🏠 Shared housing / renting a room — splitting monthly electricity, water, internet, and shared supplies costs
• 🎉 Organizing friend events — birthdays, year-end parties, gatherings — who bought what, who paid for what
• 💼 Group projects / team building — managing group funds, office supply costs, shared meal costs
• 🎓 Study groups / classes — splitting costs for materials, renting classrooms, gifts for teachers
• 🛒 Joint purchases — pooling money to buy equipment, group gifts, ordering online as a group

Just need 2 or more people and expenses to share — chiatien.net can handle it all.

3️⃣ Quick usage guide (blog / onboarding style)