Comparison

ClevCalc vs Dev Calc

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

Head to head
About

ClevCalc

This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.

Highlights
  • Scientific calculator
  • Unit converter
  • Currency converter
  • Loan calculator
  • Health calculator (BMI, BMR)
  • Date calculator
  • GPA calculator
Features
Read full description

This calculator allows you to easily handle all the calculations necessary for everyday life with a single application. A free calculator app with a clean interface and practical functions! List of calculators currently supported: 1. Calculator ( + Scientific Calculator ) • Supports the four fundamental arithmetic operations, square, root, parentheses and percentage operations. • Supports scientific operations such as trigonometric, exponential and logarithmic functions. • Possible to modify incorrectly entered expressions with a freely movable cursor. • Simple and easy. • History available. 2. Unit Converter • Supports length, weight, width, volume, time, temperature, pressure, speed, fuel efficiency, and the amount of data. • Supports all unit conversions commonly used in everyday life. 3. Currency Converter • Supports 135 currencies in the world, including dollar, euro, yen, yuan, etc. • Automatically calculates using the real time exchange rate. 4. Percentage Calculator • You can easily calculate the percentage increase or decrease. • You can also calculate what percentage one number is of another. 5. Discount Calculator • Get a discount price by entering the original price and the discount rate. 6. Loan Calculator • You can calculate the total interest and total payments by entering the loan principal and interest rate. 7. Date Calculator • A feature that calculates the specific date or anniversary to be remembered! 8. Health Calculator • You can measure the body mass index (BMI) and the basal metabolic rate (BMR). 9. Automobile Fuel Cost Calculator • You can calculate the fuel costs required for driving a car or traveling. • Enter a distance and a fuel efficiency to get a fuel cost. 10. Fuel Efficiency Calculator • Enter the amount of fuel used to get the fuel efficiency. 11. GPA Calculator • You can correctly calculate your GPA! 12. Tip Calculator • The tip amount to be added will be automatically calculated if you enter the billing amount and tip percentage. • There is a function not to calculate tips on tax. • You may calculate the amount per person by dividing final amount by the number of people. 13. Sales Tax Calculator • Get a total price by entering the original price and the tax rate. 14. Unit Price Calculator • Enter the price and the quantity and you will get the unit price. • You can compare unit prices of various goods. 15. World Time Converter • Transforms the time of 400 or more cities around the world. • Daylight savings time will also be reflected in this calculation. 16. Ovulation Calculator • Calculates the time of ovulation and fertility using the menstrual cycle! • You can also create notes by date. 17. Hexadecimal Converter • Converts between decimal and hexadecimal with ease and convenience. 18. Savings Calculator • If you enter deposit amount, interest rate and time period, the interest after tax and final savings balance will be calculated. [ Terms of Use ] https://www.apple.com/legal/internet-services/itunes/dev/stdeula [ Disclaimer ] Cleveni Inc. makes no warranty as to the accuracy or reliability or suitability of any calculation results or information provided through the ClevCalc app. Cleveni Inc. is not also responsible for any damages, direct or indirect, which may occur by the calculation results or information provided through the ClevCalc app.

About

Dev Calc

This app assists developers and programmers with immediate numeric conversions between binary, octal, decimal, and hexadecimal formats. It also provides tools for generating color codes from RGB, HSL, and HSV values, with a color picker and preset options.

Highlights
  • Numeric conversion (Bin, Oct, Dec, Hex)
  • Signed/Unsigned options
  • Adjustable bit sizes (8, 16, 32, 64)
  • RGB, HSL, HSV color code generation
  • Color picker
  • Preset color options
Features
Read full description

You can convert numeric to Bin, Oct, Dec, Hex immediately with Signed, Unsigned. ** Introduction ** This is a calculator app to help System Developers and Programmers. Convert numeric to binary, octal, decimal, hex immediately. You can set conversion bit number and signed/unsigned, so you can adjust settings for binary, short, int, long. Also you can get clolor code for system application from RGB and Color Picker. And you can choose preset color simply. ** Overview ** - Convert numeric to binary, octal, decimal, hex immediately. - You can edit each digits for detailed confirmation. - You can get color code from RGB, HSL, HSV and Color Picker. - Using preset color, you can get color code quickly. ** Characteristics ** >> Numeric conversion - You can input numeric in binary, octal, decimal, hex. - You can choose bits size from 8bits, 16bits, 32bits, 64bits. - You can choose signed numeric or unsigned numeric. - you can edit each digits directly. >> Color code - You can see a color code in Hex, RGB, HSL and HSV. - Support alpha channel of color. - You can get a color code from RGB, HSL, HSV adjuster and Color Picker. - You can get a color code just by choosing a preset color. ** Terms of Use ** https://coconutsdevelop.com/en/terms/terms_of_use.html ** Developer website ** https://coconutsdevelop.com/

Screenshots

ClevCalc4 screens
Dev Calc4 screens

Verdict

The call

The clearest difference is rating: ClevCalc at 4.7 against Dev Calc's 2.0. ClevCalc also leads on review sentiment (91% vs 60%) and ratings volume (14K vs 2). Dev Calc's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, 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

Both are free to download. ClevCalc sells 3 in-app purchases, starting at $2.99 per month and Dev Calc sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ClevCalc holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: ClevCalc has 14K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 91% of ClevCalc's written reviews are positive against 60% of Dev Calc's.

UpkeepUpdate frequency

ClevCalc ships an update monthly, Dev Calc every 2 months. The most recent releases landed on September 24, 2026 and June 4, 2026 respectively.

Scorecard4 real differences · 6 level
ClevCalc versus Dev Calc: the parameters behind the verdict, then further details
ParameterClevCalcDev Calc
PriceFreeFree
Rating4.7 (14K ratings) — better2.0 (2 ratings)
Positive reviews91.1% of reviews — better60.0% of reviews
Number of ratings14K — better2
Update frequencyMonthly — betterEvery 2 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size117 MB51 MB
Age rating4+4+
DeveloperCleveni Inc.Toshiya Hondo

Customer experience

ClevCalc

All ratings13,551 ratings
Positive93.7%
Neutral2.7%
Negative3.6%
Written reviews1,410 reviews
Positive91.1%
Neutral2.6%
Negative6.3%

Dev Calc

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

Bugs and requests

ClevCalc

Reported bugs

2 issues
  • Keystrokes not always registering
  • Compatibility issues with older devices

Requested features

4 requests
  • Dark mode option
  • Ability to save/recall calculations
  • More customization options
  • Integration with other apps/platforms

Dev Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

ClevCalc

Subscriptions2
  • Premium Subscription3 Days trial$2.991 Month
  • Premium Subscription3 Days trial$24.991 Year
One-time1
  • Premium version$13.99
1 purchases

Dev Calc

Subscriptions1
  • Remove Ads (Monthly)$1.991 Month

Questions

Is ClevCalc free?
ClevCalc is free to download, with in-app purchases available.
Is Dev Calc free?
Dev Calc is free to download, with in-app purchases available.
Which has better reviews, ClevCalc or Dev Calc?
ClevCalc is rated higher. ClevCalc averages 4.7 out of 5 from 14K ratings, while Dev Calc averages 2.0 from 2 ratings.
Do ClevCalc or Dev Calc have ads?
Both ClevCalc and Dev Calc show ads.
Which is updated more often, ClevCalc or Dev Calc?
ClevCalc ships an update monthly, and Dev Calc every 2 months. Most recently, ClevCalc was updated on September 24, 2026 and Dev Calc on June 4, 2026.

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