# Sales Tax Calculator: Dual POS — Business & Retail Tax Solution

> Business & Retail Tax Solution (iPhone/iPad app by Long Nguyen.)

- Source: https://appshunter.io/ios/app/sales-tax-calculator/id6739559416 (this page in markdown: same URL + `.md`)
- Developer: [Long Nguyen](https://appshunter.io/developer/1413645547)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 9 MB
- Languages: English, Japanese, Korean, Chinese
- Released: 2025-03-03
- Data updated: 2025-12-31
- User reviews in markdown: https://appshunter.io/ios/app/sales-tax-calculator/id6739559416/reviews.md

## What is Sales Tax Calculator?

Double-Sided Calculator with Two Tax Rate Options - Perfect for Business

Transform everyday transactions with our innovative double-sided calculator designed for face-to-face interactions!

KEY FEATURES:

• Dual Display Technology
- Main display for you
- Reverse display for your customer
- Perfect for retail, restaurants, and service businesses

• Dual Tax Rate Calculator
- Easily switch between two tax rates
- Ideal for countries with multiple tax systems (like Japan's 8% and 10%)
- Quick tax calculations with a single tap

• Readable Number Format
- Large numbers are easier to read (e.g., 1,234,567,891,000 → 1T 234B 567M 891K 000)
- No more confusion with long digits
- Perfect for handling large sums quickly and accurately

PERFECT FOR:
- Retail stores
- Restaurants
- Service providers
- Market vendors
- Anyone handling face-to-face transactions

Make your calculations transparent and professional. Build trust with customers by letting them see the numbers in real-time!

Simple to use, professional results. Download now and enhance your business transactions!

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Plan | $0.99 | one-time |



## Version history (last 5 releases)

### 1.10 — 2025-06-09

Minor Bug Fixes

### 1.9 — 2025-04-30

Minor Bug Fixes

### 1.8 — 2025-04-09

Fix minor issues

### 1.7 — 2025-04-04

Fix minor issues

### 1.6 — 2025-03-22

- Configure default tax rates specific to each region.
- Enable users to toggle the rotated display on or off.
- Support iOS 16+
- Update display name

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## More apps by Long Nguyen

- [English for Kid - Play & Learn](https://appshunter.io/ios/app/english-for-kid/id1413645548)
- [Tracer Crime](https://appshunter.io/ios/app/tracer-crime/id1557611079)
- [Paint Life](https://appshunter.io/ios/app/paint-life/id1557620478)
- [WHacky: Phrase to Story Game](https://appshunter.io/ios/app/whacky/id6651832632)
- [Petpa: AI Pet Art Magic Studio](https://appshunter.io/ios/app/petpa/id6749382979)

All apps by Long Nguyen: https://appshunter.io/developer/1413645547

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2025-12-31.*