Shared expenses
— fair down to the line item.
WonderBon doesn't just split totals. WonderBon understands the receipt. Assign individual items, split costs individually or share the whole shop — all in a single tap.
One shop. So many questions. Who pays what?
Shared expenses are rarely as simple as "let's split everything 50/50". A supermarket receipt holds shared food, personal snacks, toiletries, deposits and odds and ends. Four classic discussion lines:
"That was for both of us, wasn't it?"
Sounds like consensus — but really, was it for both? Without a clear assignment, it's gut feel, and gut feel is rarely balanced.
"The sweets were yours, though."
A receipt has 23 lines, three of them personal. Sort them out manually? No one does. So it gets stamped 50/50.
"The shampoo was just mine."
dm receipt with two people on it: household items shared, personal care individual. Mathematically clear — in practice an hour's work.
"Forget it, it's fine."
The closing line that ends 90 % of splitting discussions. Sounds easy-going — but it's rarely fair.
WonderBon doesn't just split totals. WonderBon understands the receipt.
Many apps split a total amount between people. WonderBon goes deeper: the app recognises products, prices and categories on the receipt — and makes each line assignable individually. That's the decisive difference.
A real shop, cleanly split
| Bread | €3.49 | Shared |
| Milk | €1.29 | Shared |
| Shampoo | €4.99 | Anna |
| Energy drink | €1.79 | Jonas |
| Cat food | €8.49 | Household |
| Chocolate | €2.49 | Jonas |
| Deposit | €3.00 | Separate |
That's how a fair settlement happens — without anyone having to pick the receipt apart by hand.
Three ways to split costs fairly.
Not every expense is alike — so not every expense should be split alike. WonderBon offers three flexible modes you can combine line by line:
Assign items
"This belongs to one person only."
Individual products get assigned directly to a person, a household or a category. One tap on the avatar — and the product lands in the right column.
- Shampoo → Person A
- Energy drink → Person B
- Cat food → Pet
- Nappies → Family
Share evenly
"This belongs to all of us."
The whole receipt or individual items get split evenly — 50/50 between two people or per head in larger households.
- Weekly shop → 50/50
- Flat cleaning supplies → per head
- Streaming subscription → shared
- Electricity → household
Split individually
"We split this one differently."
Not everything has to be split equally. WonderBon allows proportional splits — by income, by usage or by fixed amounts.
- 70/30 by usage
- Proportional by income
- Fixed amounts per person
- Mix: one item private, rest shared
Who owes whom — explained in four steps.
After the split, WonderBon automatically works out the balance between household members. A concrete example makes it tangible:
Anna pays for a €85.00 shop.
From a 23-item receipt to a clean split.
dm, a joint shop: 23 lines on one receipt. Seven personal (shampoo, deodorant, makeup), fourteen shared (toilet roll, cleaning supplies, washing powder), two for the cat. Who picks that apart by hand?
In WonderBon: photograph the receipt, the lines get recognised, tap the avatars, done. What used to be 20 minutes of discussion is now 60 seconds of swiping through the receipt. And the result is demonstrably fairer — because no line gets handled in bulk.
"We used to try doing this in our heads, then switched to 50/50 — even though it was never really 50/50. Now we split by item and it turns out it's closer to 60/40." — from beta-phase user feedback
For couples, families and flatmates.
Three constellations, three specific advantages — but the same logic underneath:
For couples
Separate accounts. Shared life. Clear split.
Many couples have separate accounts but shared expenses. That's where most of the confusion happens. WonderBon cleanly separates shared and private — per line, not per receipt.
For flatmates
Toilet roll shouldn't be a flat-share argument.
Cleaning supplies, deposits, shared food, electricity — in flat-shares the shared costs are small but constant. WonderBon makes them splittable per head, lets you exclude personal items, and keeps the balance traceable.
For families
Family costs are more than one total.
Groceries, kids' essentials, toiletries, leisure, school, pets — family expenses mix on every shop. WonderBon makes kids' essentials shared, personal purchases separate, and household items clearly assignable.
Why WonderBon does more than a classic splitting app.
Splitting apps like Splitwise are made for trips, restaurants and one-off events — with totals. For everyday household life they're missing the crucial layer:
| Feature | WonderBon | Classic splitting app | Excel | Banking app |
|---|---|---|---|---|
| Line-item splitting | Yes, automatic | No | Manual | No |
| Receipt recognition | Yes, AI-based | No | No | No |
| Shared & private mix on one receipt | Yes | No | Manual | No |
| Balance calculated automatically | Yes | Yes | Manual | No |
| Categories & merchant analysis | Yes | No | Manual | Limited |
| Built for everyday household life | Yes | Partial | High effort | No |
For a holiday, a total is enough. For a household, you need the detail.
Settle up once a month. Live the rest more easily.
A lot of split receipts turn into one simple month-end summary — no Excel, no discussion, no gut feel.
"Who paid what? Which balance is still open?"
Frequently asked questions
How do I split expenses?
With WonderBon you split expenses shared, private or individual. You can split whole receipts or assign individual lines to people, categories or household roles — directly on the recognised receipt, by tapping the person's avatar.
Can I split a receipt?
Yes — that's exactly the WonderBon USP. The app recognises every receipt line individually and makes it assignable. You can assign individual products to one person or split between several — groceries shared, shampoo private, chocolate for one only.
Can I split expenses 50/50?
Yes. You can split expenses 50/50, per head in a flat-share, by individual proportions (e.g. 70/30), or by your own rules. If all avatars on a line are selected, the split goes evenly across all of them automatically.
Can I separate private and shared expenses?
Yes — that's the central strength. Individual lines can stay private while other lines on the same receipt are split together. The amounts are also calculated that way in the balance.
Does WonderBon calculate the settlement amount?
Yes. Based on all assigned and split expenses, WonderBon works out who carries which share and whether a settlement is needed between people. At month's end you get a clear amount to settle — no discussion, no gut feel.
Does this work for flat-shares?
Yes, particularly well. Flatmates can split shared costs per head (cleaning supplies, toilet roll, electricity), exclude personal items and settle shared costs traceably. Toilet roll shouldn't be a flat-share argument.
Does this work for couples with separate accounts?
Yes, WonderBon is built exactly for this constellation: separate accounts, shared everyday life. You can split shared shops cleanly, keep personal toiletries private and see a clear amount to settle at month's end.
How is WonderBon different from Splitwise & co?
Splitwise splits totals between people — great for trips or one-off events. WonderBon goes deeper: the app recognises every individual receipt line and makes it splittable. That's decisive for everyday household life, where a shop is rarely entirely shared or entirely private.
One receipt. Many items. Fair split.
Fairness doesn't start with the total — it starts with the line items. WonderBon turns every receipt into an honest settlement. With a tap. No Excel. No arguments.
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