Mobi Calculator

87.9K reviews
Content rating
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About this app

Handiness universal percentage calculator for simple and engineering calculations. Ad Free!

Mobi Calculator is a free calculator for android for everyone who appreciate great usability and functionality.

Working with the calculator brings pleasure, since the easy to use interface is thought through to trifles. This is a simple calculator that will suit both school childrens, students and in work, and for everyday household calculations.

- no ads!
- time calculator
- correct percentage calculator
- realtime result
- this is calculator with full featured history of calculations, comments and sharing of calculations
- classical memory feature (M+, M-, MR)
- multiple string expressions
- big buttons and beautiful themes
- multilanguage
- customizable buttons on main screen
- spends very small memory space
- high accuracy, up to 30 digits
- HEX/BIN/OCT mode, up to 64 bits in PRO-version
- does not require unnecessary permissions like Internet connection, geo-position, contacts and SMS

It's not "All in one" tool. We appending only really essential features that usable during work and everyday household calculations.

Other features:
- calculation modes: operation priorities, rounding, etc.
- modern Material and battery safe dark themes
- trigonometrical functions, sine, cosine, etc.
- radians, degrees calculations with DMS displaying mode (degree-minute-second)
- logarithmic and other functions
- basic features, square/cube/n-th root, power, percentages

In the PRO-version only:
* Ability to store records of the history (up to 1000, FREE - 50)
* Ability to edit expression with up to 7 lines on the screen (FREE - 5)
* Additional themes (Business, Ice Cream Sandwich)
The list will be increased!

Thanks to our translators:
Chinese (Simplified) (免费计算器) - Nexus Sun
Chinese (Traditional) - Whale Majida
French - NEVEU Sylvai
German - Breaz Marius
Hellenic - Kaparos Spiros
Hungarian - István Kriskó
Italian - Claudio Percky
Korean - Jo Joon Hee (Gomdolius, [](
Polish - acosh(i)
Russian (русский калькулятор) - olgapol
Slovak (partial) - Loránt Gerencsér ([](
Turkish - Burak Çelik (Synertic)
Ukrainian - Vlad Borovik ([](
Updated on
Nov 1, 2018

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
87.9K reviews
Mika M.
July 17, 2022
I tried out ten or so calculator apps, and this one is the winner. It has haptic feedback, some history, customizability, a backspace button, no ads, and the ability to use scientific functions. My only complaints would be details-- the themes don't look good, I don't like the app icon, you have to press a button rather than swipe from the display menu for history, etc. And it hasn't been updated in 4 years. Still, best for my purposes!
29 people found this review helpful
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October 29, 2022
There aren't too many things left that are truly free of any monetary cost. And, other than the NBC Sports Predictor app, this Mobi Calculator app is the only other one I can think of that is 'truly free.' It is able to perform more operations than I will ever use. And, it's History saving capability is really very cool. So, if one needs it to perform advanced Calculus or just the most basic add/subtract ops, I recommend the Mobi Calculator without hesitation!
6 people found this review helpful
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Rick A.
December 16, 2022
WARNING AD POP-UPS! This calculator "was" awesome. Until now without warning, I keep getting ridiculous pop up ads constantly showing, forcing me to wait, thus preventing me from using Calc right a way. Remove those annoying ads or its time to look for a better Calc app. If you're not knowledgeable on the subject, "ads" constantly slow down productivity when trying to complete a task. Bc of that it went from a 5 star to now a 1 star.
18 people found this review helpful
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What's new

- Few small improvements and fixes