About this app
A three-tab calculator that lets you keep multiple calculations going at the same time. The A, B, and C tabs each work as an independent calculator. Switch between them without losing your current expression or result. Use A for the pre-tax price, B for the tax-inclusive total, and C for the discounted price—all without writing down intermediate numbers or clearing your work. Ideal for estimates, invoices, shopping, splitting bills, comparing unit prices, and everyday calculations. ■ Three Independent Calculators Switch between A, B, and C with one tap. Each tab keeps its own expression and result, so you can work on three calculations in parallel. ■ Calculation History Review your recent expressions and results. Tap a history entry to copy its result instantly. ■ Copy and Paste Tap the result display to copy or paste. Touch and hold to clear it. Moving numbers between the calculator and other apps is quick and easy. ■ Tax Calculation Calculate tax-inclusive and pre-tax prices with a dedicated button. The tax rate can be changed in Settings. ■ Essential Calculator Functions Supports basic arithmetic, square root (√), square (x²), percentages (%), sign change (±), parentheses, and a 00 key. ■ Large, Clear Display Large numbers, high contrast, and automatic thousands separators make expressions and results easy to read. ■ No Ads, No Account No banner ads or full-screen interruptions. No sign-up or account is required—just open the app and start calculating. ■ Perfect For • Checking estimates and invoices • Comparing pre-tax, tax-inclusive, and discounted prices • Calculating sales tax and shopping discounts • Splitting bills and calculating per-person costs • Comparing unit prices • Adding inventory and quantities ■ Privacy Your calculation history and settings are stored only on your device. The app does not collect personal information or send your data to external servers. ■ Try the Free Version An ad-supported free version, “TriTab Lite,” is also available. Try the free version first, then choose this version for an ad-free experience.
Latest release
What’s New
• Long calculations can now be scrolled horizontally. Your latest input always stays visible on the right, and you can swipe to review earlier entries. • Improved the display of long calculations and history, making them easier to understand at a glance. • You can now contact us more easily through “Feedback & Requests.” • You can now discover more apps from the same developer in Settings. We’ll continue improving the app to make it even easier and more enjoyable to use.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 5, 2026 · 7:40 PM Free
Screenshots
