Role

Product Designer & Mobile Developer

Timeline

2026 · iOS-first MVP

Tools
iOS SwiftiOS Swift
React Native
Could've
CHAPTER 01

The Idea

QUESTIONABLE FINANCIAL LOGIC INCLUDED

Save money
you never had.

Could've turns resisted purchases into a playful balance—useful enough to motivate, absurd enough to expose the logic.

Could've main app home screen
A moment of restraint becomes a product.
CHAPTER 02

The Product Loop

Turn the choice not to buy into an immediate, spendable reward.

01

Almost buy

Pause before checkout.

02

Record it

Add a name and price.

03

Earn credit

Turn restraint into balance.

04

Link to real-world app

Use the balance in familiar services.

Could've screen for recording a fifteen yuan purchase not made
INPUT / ONE QUICK DECISIONRecord it.

Add a name, amount and optional photo.

Could've reward screen crediting 97 percent of an avoided purchase
OUTPUT / IMMEDIATE REWARDEarn credit.

See the reward and new balance instantly.

Link to Real-World Apps

Use one fictional balance across shopping, mobility and delivery.

ONE BALANCE
THREE APPS
Guobao shopping screen inside Could've
01 / COMMERCEGoubao

Spend with intention.

Ride-hailing concept screen inside Could've
02 / MOBILITYDache

Turn savings into a ride.

Food-delivery concept screen inside Could've
03 / DELIVERYWaimai

Trade restraint for a small reward.

CHAPTER 03

UX & Visual

UX PRINCIPLE 01

Keep the next action visible.

Balance, recent saves and app links stay on one clear path.

UX PRINCIPLE 02

Let users set the absurdity limit.

Users set the overdraft limit and keep the experiment in their control.

Could've home screen directing users to commerce, ride and delivery experiences
FLOW / DIRECT TO APPChoose where it goes.
Could've settings screen with a user-controlled overdraft limit
CONTROL / OVERDRAFTSet your own limit.
Could've profile screen summarizing account behavior
REFLECTION / PROFILESee the pattern.
VISUAL SYSTEMAcid fields. Hard outlines. Oversized numbers.

Bold color energizes rewards; paper-white screens keep stats and settings calm.

CHAPTER 04

Built Like a Real App

01

Ledger

Saved transactions and totals

02

Commerce

Cart, checkout and history

03

Native feel

Haptics, motion and reminders

04

Quality

Types, lint and tests

05

Platforms

iOS and Android builds

06

Privacy

On-device accounts and photos

iOS SWIFT / REACT NATIVEFake money.
Real product decisions.
MORE WORK ↓

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