Comparison

Time Jump vs Date.Time Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Time Jump

Easily calculate the difference between dates, including business days, with side-by-side calendars. Add or subtract time periods and integrate with your device's calendar for event viewing and management.

Highlights
  • Calculate days between dates
  • Business day calculations
  • Side-by-side calendar view
  • Add/subtract time periods
  • Integrates with device calendar
  • Customizable holidays and days off
Features
Read full description

Date Calculator Time Jump for iPhone & iPad is a full-featured date calculator (counts the days between two dates) that uses side-by-side calendars to allow you to flip backward and forward in time. Tap on dates and instantly see the time difference between them in days and business days as well as the total time in years, months, weeks and days. Based on a recent customer request, results are also displayed in weeks & days. Don't want to flip through calendars? Double-tap on the selected date above either calendar and use the date picker to select a specific date – your birthday, a project deadline, an anniversary – anything. Time Jump supports dates up to 2,000 years in the past or the future. You can always tap days directly on the calendar to fine tune your selection. Time Jump's DateCalc When you need to do a specific calculation - like 180 days from a date, 45 business days before a date, 40 weeks from a date, etc. - use the DateCalc feature that allows you to add/subtract days, business days, weeks, months or years to/from any date. Business Day Calculations In addition to calendar days, Time Jump quickly and easily calculates the number of business days between two dates – this can be essential for project managers, shippers, attorneys, software developers, manufacturers – anyone working in business days. Time Jump can take US Federal and State holidays into account (skipping them) when calculating business days and you can select exactly which holidays to skip. You can also add your own custom days off (Personal Days) that are skipped for business day calculations. You can even set which days of the week are considered business days if you need to use something other than Monday through Friday. Integrated with Your iPhone/iPad Calendar Time Jump - with your permission - can be fully integrated with your iPhone/iPad calendar. You can see events - and even create or delete them - from within Time Jump. A tap on the selected date above either calendar and you will see a list of the calendar events you have chosen to view from within Time Jump in the Date Detail View. Use the Time Jump settings to select one, some or all of your calendars - including your Google calendar. Create Custom Days Off for Business Day Calculations As mentioned above, in addition to standard business day calculations, you can also add your own custom days off - Personal Days - (vacations, travel, school schedules, etc.) and Time Jump will treat these days as non-business days in the business day calculations. Of course, you can use settings to turn this feature on and off. Time Jump allows you to create your days off directly from within the app - and then they will appear in your selected iPhone calendar. Time Jump Date Detail View The Date Detail View shows you more details about a selected date: holiday information and/or a list of activities from your iPhone/iPad calendar (if you've given Time Jump permission to take a look). Once you've done a calculation you may wonder what's on your calendar and you can see your schedule from within Time Jump. Who's Time Jump for? Project managers Planners & schedulers Attorneys & paralegals Scientists Procurement managers Logistics specialists Shippers Investors & bankers Historians Educators Time explorers Anyone interested in time Follow us in Twitter: http://www.twitter.com/timetheoryapps Time Jump does not use a network connection during normal operation - use it anywhere, anytime. It does use a network connection if you access our website from within the app or provide app feedback directly to us.

About

Date.Time Calculator

Calculate date and time differences, intervals, and perform unit conversions with a pure calculator interface. Useful for determining future or past dates, calculating total time for multiple events, and converting between various time units and POSIX time.

Highlights
  • Date and time point calculations
  • Time interval calculations
  • Unit conversion of time
  • POSIX time interconversion
  • Time zone mutual conversion
  • Arithmetic operations with time
Features
Read full description

Date.Time Calculator lets you easily perform calculations involving dates, times, and time intervals, as well as convert between units of time — all with the familiar feel of a calculator. Date.Time Calculator supports the following operations: * Basic arithmetic with numbers (integers and decimals) * Arithmetic with numbers and Time Intervals * Operations between Time Intervals (addition, subtraction, and division) * Operations between Time Intervals and Time Points (addition and subtraction) * Operations between Time Points (calculating the difference) * Conversion between units of time * Conversion to and from POSIX Time * Conversion between time zones Date.Time Calculator is especially useful for questions such as: * What date is 100 days from today? * What date and time was it 32,768 seconds ago? * If one lap takes 1 minute 32.6 seconds, how long will 62 laps take? * What time will it be after those 62 laps? * How many days have passed since January 23 of this year? * How many days are 100,000 seconds? * What date and time does POSIX Time 1234567890 represent? * What is the current time in POSIX Time? And with a little creativity, Date.Time Calculator can be useful in many other situations as well.

Screenshots

Time Jump4 screens
Date.Time Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: Time Jump at 100% against Date.Time Calculator's 0%. Time Jump also leads on update cadence (every 2 months vs every 5 months). Date.Time Calculator's advantage is price ($0.99 vs $7.99) and iOS requirement (15.6 vs 17.6). On ads, in-app purchases, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Time Jump costs $7.99 and Date.Time Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Time Jump ships an update every 2 months, Date.Time Calculator every 5 months. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
Time Jump versus Date.Time Calculator: the parameters behind the verdict, then further details
ParameterTime JumpDate.Time Calculator
Price$7.99$0.99 — better
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings5 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.6 — better
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperTime Theory SoftwareNoriaki HASHIBA

Customer experience

Time Jump

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Date.Time Calculator

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Time Jump

No in-app purchases

None

Date.Time Calculator

No in-app purchases

Questions

Is Time Jump free?
Time Jump costs $7.99, with no in-app purchases.
Is Date.Time Calculator free?
Date.Time Calculator costs $0.99, with no in-app purchases.
Do Time Jump or Date.Time Calculator have ads?
Neither Time Jump nor Date.Time Calculator shows ads.
Which is updated more often, Time Jump or Date.Time Calculator?
Time Jump ships an update every 2 months, and Date.Time Calculator every 5 months. Most recently, Time Jump was updated on October 2, 2026 and Date.Time Calculator on October 13, 2026.

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