Basic Calculator vs Modulo Calculator, iCalcModulo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Basic Calculator
A free, classic calculator app with large, easy-to-press buttons and customizable skins. It supports basic arithmetic, memory functions, and can handle very large numbers without using scientific notation. Multitasking is also supported on compatible devices.
- Large, easy-to-press buttons
- Multiple beautiful skins
- Basic arithmetic operations
- Standard memory functions
- Supports large numbers (up to 60 digits)
- Multitasking support (Split View, Slide Over)
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Calculator Free is a great free calculator with beautiful HD graphics and multiple skins! Features: - Supports multitasking on iPad devices - Split View and Slide Over features - Multiple beautiful skins - General calculations: adding, subtracting, multiplying, dividing, square-rooting - Standard memory functions: Memory Addition, Memory Subtraction, Memory Recall, Memory Clear - Thousands separators option - Can handle very large numbers - up to 60 digits! (never displays in scientific notation) - Large, easy to press buttons - Copy / Paste buttons - Key click sound effect The user interface is translated in the following languages: English, Spanish, French, Italian, German, Portuguese, Russian, Japanese, Chinese (simplified and traditional), Dutch, Norwegian, Danish, Korean, Turkish, Indonesian, Finnish, Swedish, Greek, Polish, Czech, Hungarian, Slovak, Bulgarian.
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.
- Division remainder calculation
- Calculation history
- Formula display
- Clipboard copy/paste
- Percent calculations
- Familiar calculator operation
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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
Verdict
The clearest difference is in-app purchases: Modulo Calculator, iCalcModulo at none against Basic Calculator's 1. Modulo Calculator, iCalcModulo also leads on rating (5.0 vs 4.8) and iOS requirement (12.0 vs 15.0). Basic Calculator's advantage is ratings volume (3.2K vs 1) and review sentiment (74% vs 50%). On price, update cadence, ads 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
Both are free to download. Basic Calculator sells 1 one-off in-app purchase. Modulo Calculator, iCalcModulo asks for nothing beyond the download.
Modulo Calculator, iCalcModulo holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Basic Calculator has 3.2K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 74% of Basic Calculator'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.
Basic Calculator ships an update every 2 months, Modulo Calculator, iCalcModulo every 6 weeks. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.
| Parameter | Basic Calculator | Modulo Calculator, iCalcModulo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (3.2K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 74.3% of reviews — better | 50.0% of reviews |
| Number of ratings | 3.2K — better | 1 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 93 MB | 14 MB |
| Age rating | +4 | 4+ |
| Developer | MobArts | Takao Ichimura |
Customer experience
Basic Calculator
Modulo Calculator, iCalcModulo
Bugs and requests
Basic Calculator
Reported bugs
2 issues- Crashes or freezes after iOS updates
- Percent key not functioning correctly
Requested features
3 requests- Reinstate iPhone version
- Add scientific calculator functions
- Improve memory retention
Modulo Calculator, iCalcModulo
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Basic Calculator
- Banner Ad Removal$0.99
Modulo Calculator, iCalcModulo
No in-app purchases
Questions
Is Basic Calculator free?
Is Modulo Calculator, iCalcModulo free?
Which has better reviews, Basic Calculator or Modulo Calculator, iCalcModulo?
Do Basic Calculator or Modulo Calculator, iCalcModulo have ads?
Which is updated more often, Basic Calculator or Modulo Calculator, iCalcModulo?
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