Comparison

ClevCalc vs Image PDF Maker

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

Image PDF Maker

Features
Read full description

Image PDF Maker APP can convert images to PDF for sharing or printing. You can use the system or other APP to open the PDF for editing. Steps to use this APP: Step 1: Click the top left button to add one or more images. Step 2: Click the top right button to share the PDF file.

Screenshots

ClevCalc4 screens
Image PDF Maker4 screens

Verdict

The call

The clearest difference is price: ClevCalc at Free against Image PDF Maker's $2.99. ClevCalc also leads on update cadence (monthly vs every 19 months). Image PDF Maker's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement 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

ClevCalc is free to download; Image PDF Maker costs $2.99 up front. ClevCalc sells 2 in-app purchases, starting at $2.99 per month. Image PDF Maker asks for nothing beyond the download.

UpkeepUpdate frequency

ClevCalc ships an update monthly, Image PDF Maker every 19 months. The most recent releases landed on November 12, 2026 and November 7, 2026 respectively.

Scorecard4 real differences · 6 level
ClevCalc versus Image PDF Maker: the parameters behind the verdict, then further details
ParameterClevCalcImage PDF Maker
PriceFree — better$2.99
Rating4.7 (14K ratings) — better—
Positive reviews91.1% of reviews—
Number of ratings14K — better—
Update frequencyMonthly — betterEvery 19 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size117 MB1 MB
Age rating4+4+
DeveloperCleveni Inc.永文 胡

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

Image PDF Maker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

ClevCalc

Subscriptions2
  • Premium Subscription3 Days trial$2.991 Month
  • Premium Subscription3 Days trial$24.991 Year
None

Image PDF Maker

No in-app purchases

Questions

Is ClevCalc free?
ClevCalc is free to download, with in-app purchases available.
Is Image PDF Maker free?
Image PDF Maker costs $2.99, with no in-app purchases.
Do ClevCalc or Image PDF Maker have ads?
ClevCalc shows ads; Image PDF Maker does not.
Which is updated more often, ClevCalc or Image PDF Maker?
ClevCalc ships an update monthly, and Image PDF Maker every 19 months. Most recently, ClevCalc was updated on November 12, 2026 and Image PDF Maker on November 7, 2026.

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