Calc88 電卓＆メモ

📱 Calc88 | A multi-function calculator for your business

No ads, no personal information collection.
This secure calculator app runs entirely on your device.

Designed for accurate and efficient calculations for work, business, and everyday tasks.

🔐 Safe and secure design

・No ads
・No personal information collection
・No unnecessary permissions
・Calculation history is stored on your device

Focus on your calculations without unnecessary communication distractions.

🧮 Practical calculator features

✔ Tax-inclusive/tax-exclusive calculations
✔ Calculate working hours and task times
✔ Hour:minute:second arithmetic operations
✔ Convenient for estimates and work calculations

Example:
1:20:30 + 4:50:00 = 6:10:30

✏️ Undo and edit formulas

You can undo formulas even after using "=".
You can make edits on the spot and recalculate immediately.

📜 Utilize your history

・Display calculation history at a glance
・Recall with one tap
・Select multiple calculations to add up

Useful for household management, business calculations, DIY materials calculations, and more.

🎯 Calc88 Concept

Calculator × History × Practical Use

Not just a calculator,
Designed for practical use.

Simple and reliable.
Please give Calc88 a try.