Calculator by Black Art Studio is more than a basic maths app. It handles normal sums, scientific calculations, money calculations, unit conversions, dates, age, BMI, discounts, and currency conversion in one place. Google Play shows 10K+ downloads, and the app was updated on August 10, 2026.
This can help when the calculator already on your phone does not have enough tools. A student can use scientific maths, while a family can check a loan EMI, GST amount, discount, or savings plan.
The app also keeps calculation history. This means you can look back at earlier sums instead of typing them again.
How It Ran During Testing
A true two-day Redmi test needs a specific Redmi model and direct measurements. The public listing does not provide verified figures for battery loss, phone temperature, menu lag, frame drops, or visual bugs, so those results should not be presented as measured facts.
The current version is recent, which is useful when judging an Android app. For a proper Redmi test, the key checks would be opening speed, switching between calculator modes, scrolling through history, changing themes, and running several financial calculations.
Top Features
- Basic Calculator: It handles addition, subtraction, multiplication, and division. This makes it suitable for quick daily maths.
- Scientific Mode: Scientific mode adds functions such as sin, cos, tan, logarithms, exponents, π, and e. Users can also switch between degree and radian modes.
- Money Tools: The app includes loan, SIP, investment, savings, and GST calculators. These tools can show EMI, interest, savings growth, and GST amounts.
- Daily Calculators: There are tools for currency, age, BMI, units, dates, and discounts. This gives the app uses beyond normal school maths.
- History and Themes: Past calculations can be saved, selected, deleted, or cleared. Light, dark, and system themes are also available, along with several language options.
Storage & Privacy Details
Google Play does not show a fixed MB download size for this app in the listing. It also does not provide a fixed total installed-storage figure, so giving an exact number would not be reliable.
Storage use can increase when the app keeps calculation history. The listing does not clearly state that every feature works offline, so internet-dependent tools such as live currency rates may need a connection.
Google Play says the developer declares no data collected, but it also says the app may share app information and performance data and device or other IDs with third parties. It says data is encrypted in transit and cannot be deleted through the listed data-safety option.
Alternative Apps
The closest alternatives are other scientific and financial calculator apps. Calculator has a wide list of money tools, including SIP, loan, investment, savings, and GST calculators, while many basic calculator apps focus mainly on arithmetic and scientific functions. It also includes live currency conversion, history, themes, and multiple languages, giving it a broader tool list.
Strengths and Weaknesses
Pros
- Includes basic and scientific calculation.
- Has loan, SIP, GST, and savings tools.
- Keeps calculation history.
- Supports dark and light themes.
- Offers several language choices.
Cons
- Exact app size is not shown on Google Play.
- Some tools may need internet access.
- The app may share device-related information with third parties.
- It may be more than needed for users who only want simple maths.
Who Should Get This App?
Best Fit
- Students who need both normal and scientific calculations.
- Families and workers who often check loans, GST, discounts, or savings.
Worst Fit
- Users who only need basic addition and subtraction.
- Privacy-focused users who are uncomfortable with the Play Store data-sharing disclosure.
Common User Questions
Does it have a scientific calculator?
Yes. Scientific mode includes trigonometry, logarithms, exponents, constants, and degree or radian options.
Can I calculate loan EMI?
Yes. The loan calculator can show the monthly EMI, total payable amount, principal, and interest.
Does it calculate GST?
Yes. The GST tool supports CGST and SGST calculations and different tax slabs.
Offzack Verdict
Calculator is a good choice for people who want many calculation tools in one Android app. Its recent update, financial tools, scientific mode, history, and daily calculators make it useful for more than simple sums, but users should check the current data-safety details before installing.
Download Calculator from Google Playstore
Final Scorecard
- Ease of Use: ★★★★☆ — The app puts many calculation tools into one interface.
- Performance: ★★★★☆ — The current version was recently updated, though device-specific testing is still needed.
- Features: ★★★★★ — Scientific, financial, currency, date, unit, BMI, and discount tools cover many daily needs.
- Privacy & Safety: ★★★☆☆ — Google Play reports no data collected but lists possible sharing of app performance information and device IDs.
- Value for Money: ★★★★☆ — The wide range of calculators makes the app useful for many users.
- Overall Rating: ★★★★☆ — A feature-packed calculator for people who need more than basic arithmetic.