Comparison

Between Dates Calendar Math vs Prime Factors Of

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

Head to head
About

Between Dates Calendar Math

Calculate the number of days between two dates with a simple interface. Save, recall, sort, and remove date calculations. Add or subtract days from selected dates for quick date projections.

Highlights
  • Calculate days between dates
  • Save and recall date calculations
  • Sort and remove saved dates
  • Add or subtract days
  • Copy dates to start/end
  • Reset dates to current
Features
Read full description

Between Days was written to quickly tell how many days are between two dates. It uses a simple interface to get these answers in the quickest way possible. Underneath the simplicity, Between Days is one of the most feature rich date apps in the app store. Don’t let the simple interface fool you, this app does show a lot of information in a clean and easy to use format. To use the app simply set the start date and end date and it will display the number of days between those two dates. To select which date to edit you can either touch the date you want to change, or press the setting start date/ setting end date button. The selector will automatically change to display the date selected. It will also display the current day of the week showing on the calendar selector. If you would like to save the date for later, simply press the save button on the bottom. To recall a date, or to view saved dates press the view dates button on the bottom. Once you are at the list of dates you can sort or remove them. You can also press on a date to use it as the current date, or press done to return to your previous dates. There are also add and subtract buttons. This is useful if you need to find what the date is before or after a certain number of days, month or years. The copy to end date/copy to start date button will set both the start date and end date to the selected date. The reset button will set the beginning and end date to the current date, but will leave your saved dates alone. I hope you enjoy this app and find it useful! If you have any questions or comments send me an e-mail at Don.Espe@gmail.com Please rate this app so I know if there is enough interest to develop new features for it.

About

Prime Factors Of

Features
Read full description

I love numbers. And finding Prime Numbers, which are numbers that can be divided by only 1 and themselves. When I find numbers, I usually try to determine if it is a Prime Number or what Prime Numbers are the factors of it. So to help myself in doing that calculation, I created this app which will show all the Prime Numbers that are factors of the entered numbers, along with the LCM (Lowest Common Multiple) and HCF (Highest Common Factor) for the numbers entered.

Screenshots

Between Dates Calendar Math4 screens
Prime Factors Of2 screens

Verdict

The call

The clearest difference is update cadence: Between Dates Calendar Math at every 4 months against Prime Factors Of's every 13 months. Between Dates Calendar Math also leads on device support (4 vs 2) and iOS requirement (13.0 vs 18.6). On price, ads and in-app purchases 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

Between Dates Calendar Math costs $0.99 and Prime Factors Of $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Between Dates Calendar Math ships an update every 4 months, Prime Factors Of every 13 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Between Dates Calendar Math versus Prime Factors Of: the parameters behind the verdict, then further details
ParameterBetween Dates Calendar MathPrime Factors Of
Price$0.99$0.99
Rating4.8 (42 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings42 — better—
Update frequencyEvery 4 months — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better18.6
Further details — not scored
Size1 MB51 MB
Age rating4+4+
DeveloperDucky Planet LLCAnthony Caggiano

In-app purchases

None

Between Dates Calendar Math

No in-app purchases

None

Prime Factors Of

No in-app purchases

Questions

Is Between Dates Calendar Math free?
Between Dates Calendar Math costs $0.99, with no in-app purchases.
Is Prime Factors Of free?
Prime Factors Of costs $0.99, with no in-app purchases.
Do Between Dates Calendar Math or Prime Factors Of have ads?
Neither Between Dates Calendar Math nor Prime Factors Of shows ads.
Which is updated more often, Between Dates Calendar Math or Prime Factors Of?
Between Dates Calendar Math ships an update every 4 months, and Prime Factors Of every 13 months. Most recently, Between Dates Calendar Math was updated on November 1, 2026 and Prime Factors Of on November 3, 2026.

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