Do date and time calculations, in a simple date calculator app! Works just like a calculator! Two main operations:

1. Subtract two dates (time difference)
2. Add days (or other time unit) to a date
3. Subtract days (or other time unit) from a date

Common uses:

"How many days until my next birthday?"
....[your next birthday] - [today] = ________

"How many days old am I?" (or hours, minutes, etc.)
....[today] - [your birthday] = ________

"What date does that 90-day warranty expire?"
....[today] + 90 days = ________

"When is 1 million seconds from now?"
....[today] + 1000000 seconds = ________

Power-user shortcuts:

** On startup, pressing "+" or "-" auto-enters "Today" as the first expression

** "1/1/2016" + "XX days" can be reversed as "XX days" + "1/1/2016"

** Like a regular calculator, operations can be chained together (e.g. "1/1/2016" - 50 days + 2 months - [Today]).

What's New

Version 1.7.22

Startup bug fixed.

Ratings and Reviews

No longer working


I used this app everyday at work and it was great. As of the last IOS update, it no longer works. Please fix it.

Developer Response

Update is live in the store now - might have to update. Sorry for the outage.

Was a good app before iOS update


This app no longer works with iOS 11.2.5.

Developer Response

Update is live in the store now - might have to update the app. Sorry for the outage!

No Leap Year figured in much less YMWHMS!


This app is a great help in determining the next date 70 days from the last date I picked up a commemorative coin or perhaps the time between two special events, I think however this app lacks 2 things: first, it doesn't correctly figure the number of days between dates if one or both are in a Leap Year such as 2000, 2008, or 2016 for example. second, why have just days when you can also have years, months, weeks, hours, minutes, and even seconds or at least a menu letting me choose between 1 and all 7 from years to seconds! Please consider adding one or both suggestions in case you happen to update this app🤗. :)Thanks very much:)

Developer Response

Can change months/days/hours/... units after a calculation is made (when some units are displaying in the result). If you have an example of days count calculating incorrectly, please send it to us at


Pluribus Web LLC
3.9 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Pluribus Web LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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