Time Tracker Pro vs PrefixCalc

Take control of your time with Time Tracker Pro — the minimalist and powerful tool that helps you understand where every minute goes. Whether you’re working, studying, exercising, or just taking a break, Time Tracker Pro makes it effortless to track and analyze your daily activities. Start a timer with a single tap — and let the app handle the rest. Key Features One-Tap Tracking Track any activity instantly. Simple, fast, and distraction-free. Clear Insights & History View your complete timeline of tracked sessions and see exactly how you spend your day. Summaries by Day, Week & Month Discover patterns, improve habits, and stay consistent over time. Custom Categories Create personalized activity types with your own names, colors, and icons. Minimal & Elegant Design Clean interface with soothing tones and subtle pink accents. Fully supports dark mode. Smart Reminders Stay on track with gentle nudges to start or stop tracking when you need it most. Built for Focus No clutter. No ads. Just a calm, intuitive experience to help you be more mindful and productive. Time Tracker Pro is more than a tracker — it’s your time awareness companion. Gain clarity, improve focus, and make every minute count. Start tracking your time today and take charge of your day — one tap at a time.

This calculator supports Metric‑prefix such as kilo and giga. The calculator supports quetta (10^30) and quecto (10^-30), which were added in 2022. Main Functions ・Support for arithmetic operations (+ - ×÷) ・Results converted to Japanese numerals for display ・Delete one character at a time with the "DEL" button 　Press and hold to delete all ・Press and hold to copy calculation formulas and results 　English (Short scale, Long scale) and 　Chinese numerals can also be selected. ・Calculations that include prefixes such as 2M+1k, 2M×1μ, etc. Note: ・Very large numbers that exceed 200 digits may be rounded off for display and calculation purposes. 　Please note this when precision is required. ・Short scale and Long scale are currently supported up to 10^198. ・Kanji notation is supported up to 10^72. 　If it is greater than the number, it will be displayed in Arabic numerals.