Time & Date Calculator ++

Time & Date Calculator ++

Add, Convert & Track Date/Time

1 ratings
90 reviews
$0.99 Free
In-App Purchases

Lowest price: Free 10 months ago (-100%)


Price history


Details

  • Released
  • Updated
  • July 25, 2011
  • June 17, 2026

Features

Time & Date Calculator ++ screenshot #1 for iPhone
Time & Date Calculator ++ screenshot #2 for iPhone
Time & Date Calculator ++ screenshot #3 for iPhone
Time & Date Calculator ++ screenshot #4 for iPhone
Time & Date Calculator ++ screenshot #5 for iPhone
Time & Date Calculator ++ screenshot #6 for iPhone
Time & Date Calculator ++ screenshot #7 for iPhone
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About

This app provides a fast and accurate way to perform calculations involving dates and times, eliminating the need for manual methods or spreadsheets. It's ideal for professionals who need precise results for work hours, payroll, billing, and more, with a clean interface and offline functionality.

Add and subtract time instantly
Convert time formats (HH:MM, decimal hours, total minutes)
Accurate payroll and billing calculations
Persistent calculation history
Clean, calculator-style interface
Works fully offline
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What's New in Time & Date Calculator ++

40

June 17, 2026

Thank you for using the Time & Date Calculator app and pushing it toward the kind of tool people can trust for real work. This update is focused on clearer screens, fewer duplicate controls, better calculator labels, and faster access to the tools you use most. This update brings a major refresh to the way the app handles everyday time math, date tracking, work-hour calculations, and Pro workflows. The goal is simple: make the tools easier to find, easier to trust, and faster to use when you are checking real numbers under real pressure. Favorite calculators: - Add frequently used calculators to Favorites - Keep Favorites at the top of the calculator menu - Long press a calculator to favorite or un-favorite it - Reorder favorite calculators with drag and drop - Use the Favorites help button for quick instructions NEW CALENDAR TAB: • Added a calendar view for tracked dates. • Mark saved dates directly on the year calendar. • Long-press marked days to inspect saved date details. • View the selected day in Christian, Hebrew, and astrology calendar systems. • Turn calendar systems on or off in Settings. • Fixed year display so calendar years never show commas. • Added saved-date counts and marked-day counts. IMPROVED APP NAVIGATION: • Updated the first tab to Calcs for a shorter, cleaner label. • Renamed the calendar tab to Cal. • Kept Dates, Cal, and More separated from the calculator list. • Reduced tab label crowding on smaller phones. • Cleaned up sheet controls in Settings. TRACKED DATE IMPORT AND EXPORT: • Import replaces the current tracked-date list. • Export creates a shareable tracked-date file. • Import and export are now Pro features. MORE PRO VALUE: • Tracked Dates now supports a free daily date before Pro is required. • Free users can add 1 tracked date per day. • Pro unlocks heavier date-tracking workflows. SETTINGS UPDATES: • Improved Settings layout. • Calendar source toggles now explain what they control. • Hid internal product identifiers from the Pro Status section. • Kept purchase restore and status controls visible. • Added tracked-date import and export controls. • Improved feedback after successful imports. TIME AND DATE READABILITY: • Date-distance rows now avoid unnecessary hour details for older or farther-away dates. • Saved-date text is easier to read when the date is months or years away. • Time-of-day appears only when it helps. • Calendar summary numbers are cleaner. WORKFLOW POLISH: • Added edit support for tracked dates. • Editing preserves the existing saved date record instead of creating a duplicate. • Add Date and Edit Date now share the same familiar form. • The form pre-fills values when editing. • Save replaces Add when editing an existing date. UNDER-THE-HOOD IMPROVEMENTS: • Tracked dates are backed by the app's persistent storage. • Calendar markings refresh from saved date records. • Import, export, add, edit, and delete use the same tracked-date store. This release is especially useful for anyone who tracks deadlines, anniversaries, payroll dates, shift schedules, project dates, historical dates, aviation timing, or work-hour records. The app is still fast, direct, and practical, but now the date tools feel much more connected to the rest of the time calculators.

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Subscription plans

Monthly Pro

Get all Pro calculators with a monthly subscription.

$1.991 Month
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2

In-App Purchases

$14.99

Lifetime Pro Unlock

Unlock all Pro calculators with unlimited calculations.

User reviews

Easy to use and calculate time units

I have this app handy so I can get it out for quick calculations

Greed

I had to pay to get this app a few years ago, now I have to pay a subscription to use the app? I would understand if the app was free from the beginning.

The new features are great

It gets better with every release. This one is very stable.

Every update it gets better

Been enjoying this app for over a decade now

Works great for lists of time calculations

There are lots of ways of using it that I enjoy to be extra productive. Also the overnight and work day calculators are a real life saver for not having to use a random website or load up all of a spreadsheet just for what should be simple problems using just this app

Developer apps

FAQ

What does the Date & Time Calculator Plus app do?

The app is a professional tool designed for accurate date and time calculations. It allows users to instantly add and subtract time, convert between different time formats, and track work hours, payroll, or billing logs without manual guesswork or spreadsheets.

What are the key features of this time calculator?

Key features include instant addition and subtraction of hours, minutes, and seconds, easy conversion between HH:MM, decimal hours, and total minutes, and precise calculations for payroll and billing. It also offers a persistent calculation history and a clean, distraction-free interface that works offline.

Is this app free to use?

Yes, the app is available for free. Based on the provided information, there are no in-app purchases or advertisements, and it does not require network connectivity to function.

What devices is the Date & Time Calculator Plus compatible with?

This is a universal app and is compatible with iPhone, iPod Touch, and iPad devices. It supports all iPhone models and screens, and the latest version of iOS.

Who would benefit most from using this app?

The app is ideal for freelancers, contractors, consultants who bill by time, payroll and accounting professionals, aviation and transportation users, and office workers tracking work hours and overtime. Anyone needing precise time math without manual effort will find it useful.