Modulo Calculator has a remainder calculation function that is convenient for dispensing work at a pharmacy and picking work at a distribution warehouse.
Modulo Calculator shows two input numbers and the result after calculation so that the user can check input numbers with the result, therefore, the accuracy of calculation is greatly improved.
Modulo Calculator equips the set memory in addition to the general independent memory. The set memory automatically memorizes calculation history of all sets of calculated input numbers, an arithmetic operator and a result number.
Modulo Calculator doesn't require any special operations. Anyone can use Modulo Calculator easily.

Dentaku™ series has the following variations.
• Dentaku - General basic calculator
• IndiaCalc - Indian numbering system adapted
• ArabiCalc - Arabic numerals(٠١٢٣٤٥٦٧٨٩) adapted
• Modulo Calculator - Quotient and remainder of division
• MediCal - Calculation of required number of sheets and tablets in dispensing

For example in a dispensing work, a calculation when counting 3 tablets a day and 90 days with 14 tablets per sheet is "3 × 90 MOD 14 =", the result 19-4(19 sheets and 4 tablets) is displayed at the result display. And 270(tablets) from 3×90 is displayed at 1st display and 14(tablets per sheet) is displayed at 2nd display. So input numbers and the result can be checked at a glance.

It is easy to calculate by changing one input number after a calculation. For example after a remainder calculation, in the case you would like to change the tablet number per sheet of 2nd input number, tap the 2nd input number and input a new number and tap the result display(or tap=) to finish the calculation.

To recall calculation history, tap ▼older key until you find the history you want. After you tapped ▼older key, if you want to recall a newer history, tap ▲newer key until you find it.

To clear the calculator completely including calculation history, close Modulo Calculator.

To clear the calculator except for the set memory and the independent memory on MR-line, tap C key and then tap AC key appeared, that is, double tap C key.

To clear the independent memory on MR-line, tap MR key and then tap MC key appeared, or swipe on MR-line.

To completely clear the number you have just input on 1st-line or 2nd-line, tap C key.

To erase a right end number at 1st-line or 2nd-line framed in the input mode, swipe on the line.

Modulo Calculator
Ⓒ 2020 Takao Ichimura

What’s New

Version 1.2.2

Updated for improvement


Takao Ichimura
21.3 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Japanese

Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

More By This Developer

You May Also Like