Receiving payments while tracking inventory

UX Design · UI Design · Product Strategy


Every day there are more entrepreneurs willing to take the leap to open stores and start selling their products. Most commonly in small villages, entrepreneurs face challenges that make it hard for them to run their business such as inventory and transaction management. Sellast is targeting these individuals and tries to make their entrepreneurial journey a lot easier.


- New sellers purchase a bunch of items so they have a huge inventory stored somewhere but keep track of it through an overwhelming spreadsheet.

- When customers are in store, it's difficult at times to remember the price of the items and more often than not they have to make them wait until they look for the product in the spreadsheet and give them the price.

- While making the sale, they would need to write in a notebook what the customer is ordering so that it doesn't get lost when they are filling out their sales report.

- When the day is over, they need to stay longer because they have to reconcile transactions. If using a card terminal, they need to reconcile all the receipts. If receiving cash, they need to make sure their balance match.


Create an app that allows businesses manage and track their inventory and receive payments with ease.

Adding inventory

One of the main pain points for sellers is that they need to do everything manually. Not only is this time consuming but it also can lead to accidentally recording incorrect updates, causing confusion for the whole operation.

Solution: They can import their spreadsheet into the app and match the data they want to import with what the app asks per item. This way they don't have to add items one by one (although that's an option too for specific cases).

The item details allows merchants to track the stock per item which automatically updates with every sale.
Merchants can update items and their inventory from the iPad Point of sale app as well

Receiving payments

More often than not, merchants have to keep their customers waiting until they find the price of an item in their spreadsheet, specially with items that are not top sellers.

After making a sale, they have to write it down in a notebook so they don't forget each sale before they record it in their sales report.

Solution: Merchants have two ways of charge their customers: they can record a custom amount or add items to the customer's cart. If items are added then the stock is automatically updated. If custom amount is the way to go, they still can add notes to indicate what they are selling.

Products and custom amounts are just one tap away and the cart gets updated every time they add an item to the sale or add a new amount.

Depending on the nature of the business, merchants can ask for tips to increase their average ticket. This step is fully customizable in the settings of the app.

The payment method screen connects with the card terminal so it's ready to receive a payment using the customer's debit or credit card. There is also an option to receive cash instead and it shows specific amounts depending on the currency and the amount to pay.

After payment is made, merchants can send a receipt to their customers using an email, phone number or via a shareable link.

Sell In-Store · Point of Sale

The point of sale experience is pretty much the same. Sellast is allowing merchants manage their inventory and receive payments on the go or in-store.

Merchans have the same functionalities in both apps

The idea of the iPad mount is that the screens turns to the customer so they handle the checkout. They select the tip they want to add and follow the instructions in the card terminal.

The goal here is to encourage card payments to make the experience faster.

The option to allow customers handle checkout is fully customizable in settings. There may be merchants that want to provide this experience while others prefer to handle it themselves.

Managing sales

When the day is over, employees need to stay longer because they have to reconcile transactions. If using a card terminal, they need to reconcile all the receipts. If receiving cash, they need to make sure their balance match.

Solution: A single list of all the sales during the day. The app also helps them see the payment method used so it's easier to track. At the same time, they know how much they make per day. Every sale is accounted and items inventory updated immediately.

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