Free on Android and the web
Split expenses, stay friends.
Bunsu keeps the running tab for a trip, a flat or a dinner. Add expenses as they happen, see who owes what, and settle the whole group with the fewest payments. For trips, the itinerary lives right next to the money.
No ads. Friends without the app can follow along through a link.
How Bunsu works
Step 1
Create a group
A house, a trip, a dinner. Invite friends, or add guests who do not have the app yet.
Step 2
Add expenses as they happen
Split equally, by shares, by exact amounts, or by item. Every line shows who paid and what your share is.
Step 3
Settle up in one tap
Bunsu simplifies the debts automatically, so fewer payments cover everyone.
Trips
Plan the trip in the same place you split it.
Most expense splitters stop at the money. A trip in Bunsu also has dates, a calendar of every day, the places you sleep, and the things you must not miss: the flight, the train, the dinner you booked, each with its time and a reminder before it starts. Tickets and bookings go on the day as PDFs or photos, so nobody digs through email at the gate.
- A countdown until you leave, then day 4 of 10 while you are there.
- Stays laid across the calendar, with tonight's marked.
- Shared with everyone on the trip, and linked to the group where the expenses live.
- Free, on Android and on the web.
Twelve expenses. Five friends.
Two payments.
Bunsu nets what everyone paid against what they owe, then works out the fewest transfers that bring every balance to zero. A trip ends with one or two bank transfers, not a group chat full of arithmetic.
- Balances update the moment an expense lands, for everyone in the group.
- Paid someone back? Record it in a tap and the numbers move.
- Works in any currency, with conversion for mixed trips on Master.
Someone does not have the app? Send a link.
Add them to the group as a guest and share the link. They see every expense and every balance in a browser, with no account and nothing to install. If they get the app later, they take their place over, history included.
Bunsu Master
Everything you need stays free. Master adds the power tools.
- AI receipt scan: photo in, line items out
- AI chat scan: paste the group chat, get the expenses
- Split by item, tip and tax in proportion
- Recurring expenses
- Spending insights and budgets
- CSV and PDF export
- Currency conversion
- Four animated skins: Sakura, Tsukimi, Koi, Akari
Subscribe in the Android app through Google Play. It unlocks on the web with the same account.
Cannot agree who pays? Race for it.
Rooftop Race is a two-thumb pixel runner inside the Android app. Left thumb jumps, right thumb slashes, farthest run wins. For honor, or for the money.
Questions
Is Bunsu free?
Yes. Groups, expenses, every split type, settle-up and share links are free, on Android and on the web, with no ads. Bunsu Master is an optional subscription for the AI features and power tools.
Do my friends need the app?
No. Add anyone to a group as a guest, and send the group link to whoever wants to follow along: they see every expense and balance in a browser, without an account. If they install the app later, they take their place over.
Is there an iPhone app?
Not yet. The native app is Android. The web app works on any phone, including iPhone, from the browser or added to the home screen.
How does settle-up decide who pays whom?
Bunsu nets what everyone paid against what they owe, then finds the fewest transfers that bring every balance to zero. Twelve expenses between five people usually end in two payments.
What is Bunsu Master and how do I pay?
Master adds AI receipt scan, AI chat scan, split by item, recurring expenses, spending insights, budgets, CSV and PDF export, currency conversion and four animated skins. You subscribe in the Android app through Google Play, and it unlocks on the web with the same account.
Can Bunsu plan the trip itself?
Yes, and this is where it differs from the other splitters. A trip has dates, a calendar of every day, stays with check-in and check-out, and events and notes on each day with times, reminders and attached tickets or bookings. It is shared with the people on the trip and links to the group where the expenses live. All of it is free.
Is Bunsu a Splitwise alternative?
Yes. It does the same job: shared groups, every kind of split, balances and settle-up, all free with no ads and no limits, plus share links for people without the app and a web app on the same account. What it does not have yet is an iPhone app.
What happens to my data?
Your groups and expenses are yours. Bunsu shows no ads and sells nothing about you. You can delete your account, and everything in it, from Settings at any time.