FAMI-KAN(ファミカン)

Group Vacation Expense Split App — Auto-Calculate by HouseholdCabin trips are chaotic.
The finances shouldn't be.

FAMI-KAN is a free browser tool that balances Airbnb and vacation costs across couples, singles, and families. No sign-up required. Group by household and split fairly.

The ultimate ledger for large group retreats.No registration, 100% free

Any of these sound familiar?

Don't let tedious money calculations ruin a great memory.

Q.

A couple should pay more than a single person for the Airbnb.

A.

Group people by household! A couple counts as 2 units, a single person as 1. FAMI-KAN divides the massive Airbnb bill correctly by unit weight.

Q.

Handling foreign currency on international trips is impossible.

A.

Not anymore! Select a base currency (like USD or EUR) for your event. FAMI-KAN makes traveling abroad simple by consolidating the math in your native currency.

Q.

I can never remember who paid for lunch on day two.

A.

Log it as it happens! Our mobile-friendly UI makes it incredibly fast to add an expense while you're still waiting for the check at the restaurant.

How FAMI-KAN Compares

Spreadsheets / ManualWith FAMI-KAN
Splitting adults & kids
Difficult & awkward
Automatic by custom ratio
Tracking multiple receipts
Easily lost or confusing
Shared ledger link (Real-time)
Settling debts
Countless micro-transfers
Optimized 1-tap transfer route

Why we built FAMI-KAN

At the end of a fun trip, the worst part is figuring out who owes what. Pulling out receipts, calculating, and remembering who paid for what brings a cold, administrative feel to great memories.

Existing split-bill apps are useful, but often too complex or force everyone to download an app. We wanted something simpler and more welcoming.

FAMI-KAN is not just a calculator. By letting the system handle the math, you can focus on the fun conversations and memories. It's a partner that preserves the joyful afterglow of your events.

Frequently Asked Questions

Use FAMI-KAN's group feature to set household compositions. Whether it's couples, families of four, or solo travelers, set ratios and costs are auto-distributed fairly. Once set, the ratios apply to all expense items, so you don't need to recalculate for each one.

Set weight ratios per participation type — e.g., 2.0 for couples, 1.0 for singles. Room costs and shared meals are then split proportionally by headcount. You can also split meals evenly while splitting lodging by ratio — each item can have different participant settings.

Set a family of 4 at ratio 4.0, couples at 2.0, and solos at 1.0 for fair headcount-based splitting. If kids should pay half, set adults at 1.0 and children at 0.5. Once configured, the ratios apply across all expenses automatically.

Enter who paid and how much. FAMI-KAN auto-calculates net balances so everyone sees exactly who owes whom. Share the live URL for full transparency. Even when multiple people cover different costs, all entries are netted to minimize the number of transfers needed.

Log expenses in real-time during the trip via the shared URL. Everyone can see running totals on their phone, which prevents forgotten charges and disagreements later. FAMI-KAN always shows 'who has paid how much so far,' eliminating the 'I thought you paid for that' moment after returning home.

Share FAMI-KAN's URL with everyone before the trip. Every payment is logged and visible in real-time, so there's no room for 'someone got a bad deal' suspicion. The settlement is mathematically optimized, which eliminates emotional feelings of unfairness.

Yes. Select a base currency (36 options including USD, EUR, JPY) when creating the event. Enter local expenses in local currency and settle in your base currency. No manual exchange rate math needed. Note: one event uses one currency, so create separate events for multi-currency trips.

Register the person who paid the deposit as the 'payer' and enter the amount. It's automatically combined with other trip expenses in the final net settlement. From advance deposits to day-of grocery runs, all expenses can be consolidated in one event regardless of timing.

No. FAMI-KAN is a browser-based tool. Just share the URL — no app store download, no email registration required. It's completely free with no upsell pitches. Works identically on iPhone, Android, and desktop browsers.

Event data is stored on the server until you delete it. You can revisit the shared URL anytime to review past settlements. Manage multiple trips as separate events and look back at your expense history whenever you want.

FAMI-KAN's biggest advantage is that nobody needs to install an app — just share a URL and everyone can join. No account creation required. It's also specialized for household and headcount-based proportional splitting, making it ideal for mixed groups of families, couples, and solo travelers. No daily limits like Splitwise's free tier.

Yes, all features are 100% free forever. No registration required, and no hidden premium plans.

No. It runs entirely in your web browser. Just share the link and everyone can access it immediately on their phones.

Yes, you can select the currency when creating an event (supports 36 currencies). You can unify calculations easily for trips abroad.