Sleep Time Calculator vs TimeCalc

Know the best possible times to wake up with this free app. The five stages of sleep, including their repetition, occur cyclically. The first cycle, which ends after the completion of the first REM stage, usually lasts for 90 minutes. With 8 hours of sleep you typically go through 4-5 cycles a night. Waking up in the middle of a cycle leaves you feeling groggy, but waking up at the end of a cycle leaves you feeling awake and alert. This app gives you recommendations on when to wake up in the morning to decrease the likelihood that you will feel groggy.

TimeCalc is a powerful yet simple time calculator for everyday use — add and subtract hours, track work durations, calculate future dates, and find exact age in seconds. TIME CALCULATOR Add, subtract multiple time values in sequence. Instant results, calculation history saved. Examples: 2h 35m + 3h 45m = 6h 20m 12h 20m − 4.5h = 7h 50m 4h 52m × 3 = 14h 36m 1h ÷ 20m = 3 Convert between time units: 456m = 7h 36m = 7.6h TIME BETWEEN (DURATION) Enter any start and end time to calculate the exact duration. Organize into separate categories. Export PDF reports (Premium). Examples: 11:20 AM → 12:40 PM = 1h 20m 01:30 AM → 02:30 PM = 13h Today 02:00 → Tomorrow 02:30 = 24h 30m DATE CALCULATOR (ADD & SUBTRACT) From any starting date, add or subtract years/months/weeks/days/hours/minutes to get the resulting date. Calendar-accurate arithmetic — adding 1 month to Jan 31 gives the correct last day of February. Example: Today 17:32 + (1d 2h) = Tomorrow 19:32 AGE CALCULATOR Calculate exact age in years, months, and days from a birth date. Save multiple birthdays to track. --- KEY FEATURES • Automatic light & dark mode • Supports both 12h and 24h formats • Multi-language support • No account, no cloud — 100% local data • Privacy-first — your data never leaves your device --- PREMIUM Upgrade to Premium to unlock the full experience: • Remove all ads • Unlimited Time Between categories • Export reports to PDF • Advanced time unit customization Subscription plans: Monthly, Quarterly, Yearly, or Lifetime. --- Perfect for tracking work hours, calculating durations, and managing time efficiently. Thank you for using TimeCalc! [Terms] https://www.apple.com/legal/internet-services/itunes/dev/stdeula/