App design concept for a fictional business, created by Alden Chappell as a portfolio sample. Not a real app.

Crumb & Theory app

Regulars check what's in the case, order ahead for a pickup time, request whole cakes, and collect a stamp with every visit.

Crumb & Theory

In the case

Updated 7:40 am by Priya. Open until 3 pm.

  • Butter croissantPlain or almond (+$1)
    $4.25
  • Cardamom bun4 left
    $4.75
  • Sweet potato sconeBack tomorrow at 7
    Sold out
  • Seasonal fruit tartPear and cranberry
    $5.50
  • Country sourdoughSliced on request
    $9
  • Brown butter cookieGluten-free on Fridays
    $3
Today's case. What's on the shelves right now, with low and sold-out items marked.

Pickup order

When should it be ready?

We start your coffee about 5 minutes before your time, so it's hot when you walk in.

In your bag

  • Butter croissantWarmed up, $4.25
    1
  • Cardamom bun$4.75
    1
  • CortadoOat milk, $4.25
    1
Subtotal
$13.25
Tax
$1.13
Total
$14.38
Visa ending 4242

This order adds a stamp to your card.

Order ahead. Pick a pickup time, check the bag, and pay with the saved card.

Whole cakes

Hummingbird cake

Banana, pineapple and pecan with cream cheese frosting.

Pickup day

Cakes need 3 days, so Friday is the earliest.

Pay $44 at pickup. Free to cancel until Wed, Oct 28.

Whole cakes. Choose a size and a day, and the calendar starts at the first day it can be ready.

Stamp card

A stamp for every order, at the counter or in the app.

Your free pick at 10 stampsAny pastry or slice, plus any drink. We add it to your next order for you.
  • Today, pickup order 214+1 stamp
  • Sat, Oct 24, at the counter+1 stamp
  • Thu, Oct 22, pickup order 187+1 stamp
Stamp card. Every order stamps the card, and the tenth stamp is a free pastry and drink.

Your order is ready

It's on the pickup shelf left of the register, with your name on the bag.

  1. Sent7:53 am
  2. Packing8:19 am
  3. Ready8:27 am

Order 214 for Sam 8:30 pickup

  • Butter croissant, warmed$4.25
  • Cardamom bun$4.75
  • Cortado, oat milk$4.25

Paid $14.38 with Visa ending 4242

Stamp added. You're at 8 of 10, two away from a free pastry and drink.
Order ready. A clear "come get it" with where to look, the receipt, and the new stamp.

What it does

Built to stay small

Five screens around two habits: the morning pickup and the stamp card. No delivery, no gift cards, no menu builder.

Payments, tax, tickets and the stamp count stay in the bakery's existing POS and loyalty system. The app reads from it and sends orders to it.

Ships to iOS and Android from one codebase.