뚝딱 POS 프로그램 금액계산기 : N빵 장부정리 통계

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About this app

Only the essential functions for buying and selling, all in one mobile phone.

When buying, calculate the total product price, discounts, split payments, and split payment ratios.

When selling, manage product calculations, change, sales ledgers, inventory, and sales statistics.

Even without a POS machine, everything from calculations to sales management flows seamlessly in one place.

The Dduk-ddak Calculator is not just a standard calculator that calculates numbers and stops there. It focuses on the actual flow of buying and selling: adding items to a cart, settling accounts, recording sales, and checking inventory and statistics.

Use it as a portable POS calculator in small shops, marketplaces, flea markets, and event booths; and as a calculator for product prices and settlements for daily grocery shopping, group purchases, and gatherings.

[Calculations Required When Purchasing Items]

- Add multiple items to the shopping cart to check quantities and total amounts
- Apply discounts and surcharges per item
- Split the cost among multiple people
- Calculate each person's share based on a desired ratio
- Settle together even if items were purchased separately
- Organize who needs to send how much to whom
- Immediately verify that the received change is correct

[Calculations and Management Required When Selling Items]

- Save frequently sold items to favorites and quickly add them to the shopping cart
- Modify prices, quantities, and discounts for each item
- Calculate amounts based on payment methods such as cash, cards, and gift certificates
- Verify change to be returned based on the cash received
- Save the current shopping cart to the sales ledger
- Correct incorrectly saved sales, save them again, or process refunds and corrections
- Automatically deduct inventory for selected items during sales
- Match stock inflows, deductions, and actual inventory, and check for items with low stock levels

[Sales Ledger and Sales Statistics]

- Check sales records by day, month, and year
- Check sales quantities and amounts by item
- Check net sales, number of transactions, quantity, and average per transaction

- Identify best-selling items and high-value products

- Check busy times and sales changes compared to previous periods

- Instantly identify items with low stock levels in the statistics

[Even without a POS machine or internet]

Key calculation, ledger, and inventory functions operate without internet access or an account. Input data is stored on the device, and you can create backup and sales history files to keep a record yourself.

A shopping and settlement calculator for buyers,

A portable POS calculator in your hand for sellers.

Solve everything from product calculation to sales management with just your mobile phone using the Dduk-dak Calculator.

※ The Dduk-dak Calculator is a POS auxiliary tool that assists with product price calculations and sales recording. It does not provide actual card approval/payment processing, receipt issuance, or barcode scanning functions.
We focused on the exact features needed for buying and selling goods. From shopping and settlement to product calculation and sales management, handle everything with just your mobile phone, without a POS machine.
Updated on
Aug 26, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

• 가로·세로 화면 맞춤 기능을 개선했습니다.
• 장바구니와 주요 버튼이 다양한 화면 크기에서 안정적으로 표시되도록 개선했습니다.
• N빵 정산의 계산 정확성과 진행 과정을 대폭 개선했습니다.
• 비율 결제와 결제수단 입력을 더 간결하고 편리하게 다듬었습니다.
• 숫자 입력과 진동 피드백을 개선하고 여러 오류를 수정했습니다.
Content rating
Everyone
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App support

About the developer
조영호
baikin1019@naver.com
South Korea