Verified by our team and matched with recent HappyMod user reports.
2510DRK44C Xiaomi
Android 15
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The original All-In-One Calculator for Android It's a FREE, complete and easy to use multi calculator & converter.
What does it do? Designed with simplicity in mind, it helps you solve everyday problems. From simple or complex calculations, to unit and currency conversions, percentages, proportions, areas, volumes, etc... it does it all. And it does it good!
This is the PERFECT Calculator Passionate development combined with constant feedback we receive from our users resulted in that we think is the best multi calculator on the store. Featuring over 75 FREE Calculators and Unit Converters packed in with a Scientific Calculator, it's the only calculator you will need from now on on your device.
Oh, and did we say it is completely FREE? Yes, it is free. We think everyone should enjoy this.
If you are a student, teacher, engineer, handyman, contractor or just somebody who struggles with math & conversions, you really should give this one a try. • Use it for simple or complex calculations • Convert units or currencies in the same app • Enjoy easier homework or school assignments
So, on with the features...
MAIN CALCULATOR • Clear design with big buttons • Multiple calculator layouts • Editable input & cursor • Copy & paste support • Scientific functions • Fraction calculator • Calculation history • Memory buttons • Home widget
75 CALCULATORS & CONVERTERS • Algebra, Geometry, Unit Converters, Finance, Health, Date & time • Currency converter with 160 currencies (available offline) • Instant results delivered as you type • Smart search for faster navigation
Algebra • Percentage calculator • Proportion calculator • Ratio calculator • Average calculator - arithmetic, geometric and harmonic means • Equation solver - linear, quadratic and equation system • Greatest common factor & Lowest common multiple calculator • Combinations and permutations • Decimal to fraction • Fraction simplifier • Prime number checker • Random number generator
Geometry • Shape calculators for square, rectangle, parallelogram, trapezoid, rhombus, triangle, pentagon, hexagon, circle, circle arc, ellipse • Body calculators for cube, rect. prism, square pyramid, sq. pyramid frustum, cylinder, cone, conical frustum, sphere, spherical cap, spherical frustum, ellipsoid
Unit converters • Acceleration converter • Angle converter • Length converter • Energy converter • Force converter • Torque converter • Area converter • Volume converter • Volumetric flow converter • Weight converter • Temperature converter • Pressure converter • Power converter • Speed converter • Mileage converter • Time converter • Digital storage converter • Data transfer speed converter • Numeric base converter • Roman numerals converter • Shoe size converter • Ring size converter • Cooking converter
Finance • Currency converter with 160 currencies available offline • Unit price calculator • Sales tax calculator • Tip calculator • Loan calculator • Simple / Compound interest calculator
Health • Body mass index - BMI • Daily calories burn • Body fat percentage
Date & time • Age calculator • Add & subtract - Add or subtract years, months, days, hours and minutes from a date • Time interval - Calculate the difference in time between two dates
Miscellaneous • Mileage calculator • Ohm's law calculator - voltage, current, resistance and power
Developed in Transylvania
● Paid Features Unlocked ● No ads ● Stable mod ● Debug info removed ● Multiple languages available ● No active trackers or advertisements ● Requires android 5.0 and up ● CPUs arch: arm64-v8a ● Optimized and cleaned resources for fast loading.
Version
3.8.0
Version Code
380
Permission
INTERNET
ACCESS_NETWORK_STATE
VIBRATE
WAKE_LOCK
READ_GSERVICES
FOREGROUND_SERVICE
DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Is HappyMod App on HappyMod.work works better than other site?
Yes, the HappyMod on HappyMod.work has no ads with faster download spped. All the Mod APKs keep updating.
What is XAPK? How to install?
XAPK is a package format that combines APK and extra data files. Download and and install HappyMod App to install it.
The download link is broken!
Try refreshing the page, switching your network connection, or selecting an alternative mirror. If the issue persists, please submit a report so we can update the link as soon as possible.
What causes mods not to work properly?
Common causes include version mismatches, unsupported device architecture, or missing system permissions. To ensure stability, always match the mod to your specific game version and perform a clean installation.
How to fix the "App not installed" error?
Uninstall any conflicting builds of the app, clear your installer's cache, and ensure you have sufficient internal storage. Once cleared, retry the installation using the original installer package.
How to update mods without losing data?
If the digital signatures match, you can simply install the update directly over the existing app. However, it is highly recommended to back up your game files before upgrading to prevent any accidental data loss.
Data Safety
Safety starts with understanding how developers collect and share your data.
No data shared with third parties
This app may collect these data types: Location, Personal info, and 3 others
