Overview

Smart Time & Date Calculator is an all-in-one calculator suite for time, date, forecasting, workdays, age, time zones, and countdowns. It is designed for precise planning and engineering-style calculations with fast input, clean results, and a consistent UI.

Core Features

Smart Time Calculator

• Time-based arithmetic with a custom keypad
• Supports multiple operations with an easy input flow
• Keeps history with duplicate prevention

Time & Simple Calculator

• Quick time addition and subtraction
• Lightweight mode for fast calculations
• History and record support

Date Calculator

• Add or subtract days from a date
• Useful for planning and scheduling

Date Difference

• Calculates the difference between two dates
• Useful for timeline and duration tracking

Age Calculator

• Calculates age from birth date and reference date
• Shows years, months, and days

Workdays Calculator

• Counts business days between two dates
• Excludes weekends and optionally holidays

Time Zone Converter

• Convert time between time zones
• Keeps history for repeated conversions

Countdown Timer

• Create multiple countdowns
• Notifications and history

Time & Date Forecast (Advanced)

Time Forecast

• Custom keypad input for time fields (no system keyboard)
• Calculates: current component hours, life remaining, inspection/servicing due at AF/Eng hours

Date Forecast

• Choose base date: Manufacture date OR Installed date
• Inspection/servicing due: numeric (supports decimals), unit (Years, Months, Weeks, Days)
• Calculates: inspection/servicing due on (date), life remaining (years, months, days)

History System

Each calculator maintains its own history.

• History entries store all valid inputs and results
• Duplicate prevention is applied
• Free users keep the latest 10 entries
• Premium users have unlimited history
• Each history card can include tag, component name, timestamp, inputs, and results

Premium Features (If Enabled)

• Removes ads
• Unlimited history storage

Available on: Google Play (Android) | iOS, macOS, watchOS (coming soon)

For step-by-step instructions and screenshots, see Learn how to use. For support, use the “Send Feedback” option inside the app Settings, or contact us.

← Back to all apps