ClevCalc vs CalcNotes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Scientific calculator
- Unit converter
- Currency converter
- Loan calculator
- Health calculator (BMI, BMR)
- Date calculator
- GPA calculator
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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.
CalcNotes
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A powerful notepad that calculates each line and shows the results instantly. Quickly handle addition, subtraction, multiplication, division, and more in real time. Perfect for household budgets, balance tracking, revenue calculations, or splitting bills whenever you need to compute. ■ Calculation + Notepad Write an expression and it calculates automatically, displaying the result on the right. ■ No Equal Sign Needed You never need an '=' in your formulas. The app calculates automatically and shows the result in real time. ■ Tolerant of Extra Characters Expressions like "1,000 + 2,000" work perfectly even with commas or other characters. The app ignores what it doesn't need and still calculates correctly. ■ Copy Results Instantly Copy the calculation result with a single tap and paste it wherever you need it. ■ Unlimited Tab Management Create unlimited tabs for each category. ■ Flexible Tab Reordering Reorder tabs freely with intuitive drag-and-drop. ■ Notifications Schedule reminders with any message at the time you choose. ■ Automatic Backup & Restore Automatic backups keep your important data fully protected, even when switching devices. ■ Rich Theme Options Customize the app with a wide variety of color themes. ■ Biometric Authentication Boost app security with biometric authentication. ■ Full Offline Support Use the app anytime without an internet connection. ■ Full Dark Mode Support Switch freely between system-linked, light, and dark modes. ■ No Login Required Start using the app immediately without any login. ■ Robust Security We never send your data outside the device. All data stays securely stored on your device. No password input or storage is required. ■ Fast Support We respond quickly to your inquiries. Feel free to contact us at info@naokiotsu.com ■ Privacy Policy https://naokiotsu.com/privacy-policy ■ Terms of service https://naokiotsu.com/term-of-use
Screenshots
Verdict
The clearest difference is ads: CalcNotes at none against ClevCalc's shown. CalcNotes also leads on update cadence (weekly vs monthly). On price, in-app purchases, 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
Both are free to download. ClevCalc sells 2 in-app purchases, starting at $2.99 per month and CalcNotes sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
ClevCalc ships an update monthly, CalcNotes weekly. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.
| Parameter | ClevCalc | CalcNotes |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (14K ratings) — better | — |
| Positive reviews | 91.1% of reviews | — |
| Number of ratings | 14K — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 117 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Cleveni Inc. | Naoki Otsu |
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
CalcNotes
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ClevCalc
- Premium Subscription3 Days trial$2.991 Month
- Premium Subscription3 Days trial$24.991 Year
CalcNotes
- Premium$1.991 Month
- Premium (Pay Once)$4.99









