About the project

PassimPay is a cryptocurrency payment service that also offers a wallet for personal use. We designed the wallet's mobile app: the total balance screen, the coin portfolio, individual asset pages, transaction history and withdrawal details.

Challenge

A crypto wallet user holds many assets, networks and transactions at once, and amounts are written as long fractions. We needed to make the essentials — how much money there is and what can be done with it — readable at a glance, while keeping details such as the network, fees and transaction status available but out of the way.

Home screen and portfolio

At the top are the wallet and account selector and the total balance in dollars with a button to hide the amount. Right below are three main actions: Deposit, Exchange and Send. The Dashboard / Portfolio toggle separates the overview from the list of assets. In the portfolio, each coin is a card showing the current rate, the 24-hour change, the number of coins and their value. The bottom bar duplicates the key scenarios, with exchange placed in a round central button.

The Wallet Summary screen is the full list of available assets with search. Tokens are labeled with their network, such as TRC 20, next to the rate and the percentage change, highlighted in red when the price drops.

Asset page

Each coin opens on its own page in its brand color: orange for Bitcoin, green for Tether. The header shows the current price and a chart with periods from 24 hours to one year. Below, the Deposit, Exchange and Withdraw actions are repeated, and the balance is shown in two values: in coins and in dollars.

The About tab describes the asset: daily volume, liquidity, market cap and a short description. This helps users check basic coin data without leaving for third-party services.

The History tab is the asset's transaction history with Income, Outcome and Exchange filters and search. The transaction type is recognizable by a colored icon, and the amount is shown both in the coin and in its equivalent.

Withdrawal details

Tapping a transaction opens the Withdrawal details sheet: amount and network, transaction status, PassimPay fee, network fee and the final amount to be received — each value in a separate field labeled with its currency. The screen includes an error status and a button to share the transaction details.

Result

We delivered a mobile wallet design in which users see their total balance and portfolio, quickly move to deposit, exchange and withdrawal, explore individual assets and break down every transaction down to the fees. The per-asset color system and the consistent page structure keep the interface predictable even with a large number of coins.