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Sign in. On the home page you have two options:

• Continue with Google — one click, nothing to remember.
• Log in / Register with email — choose Register to create a new account with an email and password, or Log in if you already have one.

Anyone can sign up — you don't need an invitation to use PayUp.

Your account settings. Open the account menu (top of the screen) and go to your account settings to:

• See your plan, and upgrade or manage it.
• Pick your theme and accent color — these are saved to your account and follow you to any device.
• Set your default tip.
• Log out. If you signed up with an email and password, you can also change either of them here — if you signed in with Google, neither is offered, because Google manages both, and the page says so.

A trip groups the receipts you want to split together — a dinner, a weekend away, a group takeout order.

1. From your Dashboard, choose New Trip.
2. Give it a name (e.g. “Saturday dinner”).
3. Add the participants — the people sharing the bill. You can type several at once separated by spaces; each name becomes a removable chip you can fix or delete before creating the trip.
4. Open the trip to start adding receipts.

Your Dashboard shows your own trips alongside any a friend shared with you (labeled Shared by <name>). Once a trip is finished you can mark it completed to tuck it away — see Settling up.

Managing participants later: open a trip and use its Participants section to add or remove people at any time — the trip owner and members can both edit the list. If you try to remove someone who's already set as a payer or assigned to an item, PayUp blocks it and names the receipt to fix first; reassign those, then remove.

Adding a receipt to a trip:

1. Inside the trip, add a receipt.
2. Take a photo with your phone camera, or upload / drag in an image (JPG or PNG).
3. PayUp scans it and fills in the line items automatically — and, when it can read them, the merchant name, tax, and tip.
4. Give the receipt a quick look and correct anything the scan got wrong (see Editing receipts).

Trips are better shared — invite the people you ate with so everyone can assign their own items.

1. Open the trip and find its invite link.
2. Share the link with your friends (text, chat, however you like).
3. When a friend opens the link and signs in (Google or email), they join the trip as a member.

Once they've joined, members can view the trip and edit its receipts — assign items to themselves, fix a price, and so on. You don't have to be the trip's creator to help clean up the receipt.

Tips:

• A friend has to sign in to join — the invite link adds them to the trip after they authenticate.
• If someone says they “can't see the trip,” make sure they opened the invite link and signed in.

Scans aren't perfect, so every receipt is fully editable. Open a receipt to make changes:

• Rename the receipt (e.g. “Dinner” → “Tony's Pizza”).
• Edit a line item — fix its name or price.
• Add a line item the scan missed.
• Delete a line item that isn't real. Deleting an item also removes it from anyone it was assigned to, so there are no leftover splits.
• Set who paid — choose the person who actually covered the bill, so settle-up knows who's owed.
• Assign items — check off who shared each item. An item split by two people is divided between them; an item only one person ordered is theirs alone.
• Multi-quantity items are split for you — a line like 3 × Taco $10.00 is scanned as three separate items (price divided evenly, to the cent) so each unit can go to a different person.
• Tax and tip are filled from the scan when possible and can be edited; PayUp spreads them proportionally to what each person ordered.

Edits save as you go and update the totals immediately. If others are in the same trip, they'll see the changes live.

To remove a whole receipt, use its delete action and confirm — it's removed from the trip and the settle-up.

Reading a receipt is automatic, and it is not always right. Creased paper, poor light and unusual layouts all trip it up, and a misread price is much cheaper to fix now than after everyone has paid.

Under the fees on a receipt you will see “Did we read the receipt items correctly?” with a thumbs up and a thumbs down. Answering is optional and changes nothing about your split — it tells us which receipts the scanning struggles with, so it can be improved.

Not everything on a trip has a receipt. A taxi paid in cash, a tip left on the table, somebody covering the parking — these are costs with no receipt: you type them in instead of taking a photo.

Use Add a cost with no receipt on the trip screen. Give it a name, say who paid, and choose how it is shared:

• Split evenly — type the total and pick who it is shared between.
• Split manually — type each person's share directly. The total is whatever those shares add up to, so it always agrees with itself.

Once the receipts are entered and items are assigned, open the trip's Settle Up view.

PayUp adds up everyone's share — items, plus their proportional tax and tip — and compares it to what each person actually paid. Then it shows the simplest set of payments to square the group: who pays whom, and exactly how much, using the fewest transactions possible (no one makes three separate transfers when one will do).

How to read it:

• Each line is a single payment: Person A pays Person B $X.
• Pay those amounts however you normally do (your payment app of choice), and everyone's even.

Marking a trip done. Once everyone's settled, the trip owner can mark the trip completed. Completed trips drop off your active dashboard; tick Show completed there to see them again, or mark a trip active to bring it back.

If the numbers look off:

• Check that the right person is set as the payer on each receipt.
• Make sure every item is assigned to someone — unassigned items can skew shares.
• Confirm tax and tip are correct on each receipt.

Reading a receipt costs real money on our side, so there is a limit on how many you can add. It counts photographed receipts only — costs with no receipt are free and unmetered.

• Free plan: 3 receipts to start, kept until you use them, then 1 per calendar month.
• Paid plan: 50 receipts per calendar month.

The window is the calendar month, not a rolling thirty days — everybody's monthly allowance returns at the same moment, on the 1st, and an unused month does not carry forward. Your opening 3 are the exception: they are not a monthly allowance, so they sit there until you use them.

While you have allowance left, the trip screen shows how much: “3 of 3 receipts left this month” to begin with, counting down as you use them and settling at “1 receipt left this month” once your opening receipts are spent.

That counter says this month because it is showing what you can add this month — not a deadline. An opening receipt you do not use is still there next month, and the month after, which is why the number only falls once you have actually spent one.

When you reach the limit, the upload area is replaced by a note telling you the date your allowance returns, with the option to upgrade. Your existing receipts and trips are untouched, and you can still add costs with no receipt and settle up.

The paid plan raises the monthly receipt limit to 50 and keeps receipt photos for longer — see how long we keep your receipts. Nothing else about the app changes.

Upgrade from Account settings, or from the note that appears when you reach the monthly limit. Payment is handled by Stripe on their own secure page; PayUp never sees your card details.

Cancelling. Open Manage subscription in Account settings, which takes you to Stripe's billing portal. You can cancel there, change your card, or read past invoices.

Cancelling does not cut you off. You have paid through the end of the current period, so the paid plan keeps working until that date and then returns to free on its own — nothing is taken away early, and your trips and splits are never deleted.

We don't keep receipt photos forever. After a while PayUp removes the image automatically — you don't have to ask, and there's nothing to switch on.

• On the free tier, a receipt image is kept for 30 days.
• On the paid plan, it's kept for 90 days.

Each receipt shows its own countdown, so you can always see when that particular image is due to go.

Removal is permanent. We can't restore a deleted image, so if you need to keep a receipt — for expenses, a warranty, or anything else — save your own copy before it expires.

Deleting a receipt yourself removes its image straight away, without waiting for the retention window.