Comparison

Calculator Plus #1 vs Modulo Calculator, iCalcModulo

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

Head to head
About

Calculator Plus #1

A straightforward calculator app designed for everyday math, school, budgeting, and shopping. It offers essential functions, a clear interface with large buttons, and a history log for reviewing past calculations. Advanced features include memory functions, percentage calculations, and multi-window support for efficient workflow.

Highlights
  • Basic arithmetic operations
  • Calculation history
  • Memory function
  • Percentage calculations
  • Large buttons and display
  • Customizable themes
  • Multi-window mode
Features
Read full description

All-in-one basic calculator app for iPhone and iPad. Calculator Plus combines a basic calculator and a scientific one, percentage and tax calculator, financial and date calculator, currency and unit converter in one easy-to-use app. Stop switching between multiple calculator apps. Calculate faster, stay organized, and get accurate results with Calculator Plus. * Looking for a basic calculator with history and memory? * Calculator Plus automatically saves calculations so you can review results, continue calculations later, compare numbers, track expenses, and avoid repeating work. * Need a scientific calculator for school, engineering, or advanced math?* Use logarithms, trigonometric functions, exponents, algebra, scientific formulas, parentheses, and multi-step equations in one powerful calculator. * Need a percentage calculator while shopping? * Whether you’re asking “How much is 20% off?” or “What tip should I leave?”, Calculator Plus delivers accurate answers. Quickly calculate discounts, sales tax, tips, markups, profit margins, percentage increases, and percentage decreases. * Looking for a budgeting and finance calculator? * Track expenses, calculate bills, compare prices, plan budgets, and organize calculations with notes and history. * Need a currency converter and calculator in one app? * Convert currencies and measurement units while performing calculations - ideal for travel, shopping, business, and everyday use. * “How many days until my trip?” * Need a date calculator? Count days, calculate age, track deadlines, plan vacations, and manage important events. * Calculator Widget * Add the widget to your home screen for instant access. * Notes and Saved Calculations * Attach notes to saved calculations to organize expenses, transactions, tax records, budget plans, and currency conversions. * Perfect for: * — Everyday calculations — Scientific calculations and algebra for students — Shopping discounts and percentages — Budgeting, bills, and expenses — Tax and financial calculations — Currency and unit conversion — School homework and study — Multi-step equations with history — Date, age, and days calculations * Why Do Users Choose Calculator Plus? * Many calculator apps focus on only one task. Calculator Plus combines a scientific calculator, financial calculator, percentage calculator, tax calculator, currency converter, unit converter, date calculator, notes, history, widget, and multi-window support in one app. * Who Is Calculator Plus Designed For? * — Students and schoolchildren — Engineers and technical professionals — Business owners and freelancers — Finance professionals — Travellers and shoppers — Families managing household budgets Whether you need a calculator for budgeting, taxes, shopping, school, business, travel, engineering, or everyday math, Calculator Plus gives you all the tools you need in one app.

About

Modulo Calculator, iCalcModulo

This utility app provides a familiar calculator interface with the unique ability to calculate division remainders. It offers a calculation history, formula display, and clipboard functions for efficient use. Ideal for tasks requiring precise division with remainders.

Highlights
  • Division remainder calculation
  • Calculation history
  • Formula display
  • Clipboard copy/paste
  • Percent calculations
  • Familiar calculator operation
Features
Read full description

iCalcModulo is a simple and easy-to-use calculator with a familiar operation system, plus a remainder calculation function (division with a "remainder"). It can be calculated by the same operation as real calculators. (Compliant with calculator of company C) It also has functions unique to the calculator app, such as displaying calculation history and calculation formulas. There is ⓘ button to display the information page that describes instructions. Thank you for using iCalc. (Instructions) The operation for Arithmetic Calculations, Root Calculations, Constant Calculation and Independent Memory Calculation are the same as real general calculators. (Compliant with calculator of company C) The original operations and functions are as follows. - When performing division by pressing [MOD] instead of [÷] to calculate, the quotient and remainder will be displayed. The remainder is calculated so that it is greater than or equal to 0. - For example, when calculating the quotient and remainder of 30 ÷ 7, if you operate [3] [0] [MOD] [7] [=], the calculation result '4-2', which means the quotient is 4 and the remainder is 2, is displayed on the result display. - For example in a dispensing work, a calculation when counting 3 tablets a day and 90 days with 14 tablets per sheet is [3] [×] [9] [0] [MOD] [1] [4] [=], the result '19-4', which means 19 sheets and 4 tablets, is displayed. - If the result of calculation with the [MOD] key is used for the next calculation, the value of the quotient will be used. - After calculation with the [=] key, the result is displayed on the main display and a white frame is added. - If you tap an operator key instead of [=] key to calculate, the operator turns white, indicating that you are preparing for the next calculation. - The calculation formula is displayed below the main display. - Flipping the main display while inputting, the minimum digit of the displayed input value will be erased one by one. - Flipping the MR display for independent memory to erase the value in independent memory. - Call the calculation history with [▼older] key. Repeat tapping to call older history. If you called a calculation history that was too old, you can use [▲newer] key to return to newer history. - Tapping [C] key to erase the entered value. And [C] key changes to [AC] key. - Tapping [MR] key to enter the value of the independent memory. And [MR] key changes to [MC] key. - [copy] and [paste] keys for clipboard. - Percent Calculations What is 25% of 100? [1] [00] [×] [2] [5] [%] → 50 25% of what number is 100? [1] [00] [÷] [2] [5] [%] → 400 What is 100 increased by 25%?   [1] [00] [+] [2] [5] [%] → 125 What is 100 decreased by 25%?   [1] [00] [−] [2] [5] [%] → 75 (Others) - The calculation range is −999,999,999,999 ~ 999,999,999,999. - The maximum number of digits is 12. - The developer assumes no responsibility for any loss or claims by third parties which may arise from the use of this app.

Screenshots

Calculator Plus #14 screens
Modulo Calculator, iCalcModulo1 screens

Verdict

The call

Calculator Plus #1 and Modulo Calculator, iCalcModulo both sit at 4.8 stars, but that hides the real split: 89% of Calculator Plus #1's written reviews are positive against 50% of Modulo Calculator, iCalcModulo's. Calculator Plus #1 also leads on ratings volume (5.1K vs 1). Modulo Calculator, iCalcModulo's advantage is in-app purchases (none vs 7) and iOS requirement (12.0 vs 15). On price, rating, update cadence and ads 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

Both are free to download. Calculator Plus #1 sells 7 in-app purchases, starting at $0.99 per month. Modulo Calculator, iCalcModulo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Modulo Calculator, iCalcModulo holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Calculator Plus #1 has 5.1K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 89% of Calculator Plus #1's written reviews are positive against 50% of Modulo Calculator, iCalcModulo's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Calculator Plus #1 ships an update every 5 weeks, Modulo Calculator, iCalcModulo every 6 weeks. The most recent releases landed on October 1, 2026 and September 12, 2026 respectively.

Scorecard5 real differences · 5 level
Calculator Plus #1 versus Modulo Calculator, iCalcModulo: the parameters behind the verdict, then further details
ParameterCalculator Plus #1Modulo Calculator, iCalcModulo
PriceFreeFree
Rating4.8 (5.1K ratings)5.0 (1 ratings) — better
Positive reviews88.5% of reviews — better50.0% of reviews
Number of ratings5.1K — better1
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1512.0 — better
Further details — not scored
Size157 MB14 MB
Age rating4+4+
DeveloperDigitAlchemy LLCTakao Ichimura

Customer experience

Calculator Plus #1

All ratings5,067 ratings
Positive97.2%
Neutral1.5%
Negative1.3%
Written reviews1,300 reviews
Positive88.5%
Neutral3.0%
Negative8.5%

Modulo Calculator, iCalcModulo

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Bugs and requests

Calculator Plus #1

Reported bugs

2 issues
  • App crashes or doesn't open
  • Ads still show up even after paying to remove them

Requested features

3 requests
  • Add brackets/parentheses for arithmetic operations
  • Improve arithmetic operator priority
  • Add more algebraic and trigonometric functions

Modulo Calculator, iCalcModulo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Calculator Plus #1

Subscriptions4
  • Calculator with History7 Days trial$0.991 Month
  • Calculator with History7 Days trial$1.491 Month
  • Simple Calculator - No Ads7 Days trial$6.291 Year
Show 1 more
  • Simple Calculator - No Ads7 Days trial$8.991 Year
One-time3
  • Remove ads$3.99
  • Multiple Basic Calculations$8.99
  • Multiple Basic Calculations$12.99
None

Modulo Calculator, iCalcModulo

No in-app purchases

Questions

Is Calculator Plus #1 free?
Calculator Plus #1 is free to download, with in-app purchases available.
Is Modulo Calculator, iCalcModulo free?
Modulo Calculator, iCalcModulo is free to download, with no in-app purchases.
Which has better reviews, Calculator Plus #1 or Modulo Calculator, iCalcModulo?
Modulo Calculator, iCalcModulo is rated higher. Calculator Plus #1 averages 4.8 out of 5 from 5.1K ratings, while Modulo Calculator, iCalcModulo averages 5.0 from 1 ratings.
Do Calculator Plus #1 or Modulo Calculator, iCalcModulo have ads?
Both Calculator Plus #1 and Modulo Calculator, iCalcModulo show ads.
Which is updated more often, Calculator Plus #1 or Modulo Calculator, iCalcModulo?
Calculator Plus #1 ships an update every 5 weeks, and Modulo Calculator, iCalcModulo every 6 weeks. Most recently, Calculator Plus #1 was updated on October 1, 2026 and Modulo Calculator, iCalcModulo on September 12, 2026.

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