Scal(Free) is an app by Tamineer Technologies Inc in the Productivity category, listed since at least August 2019. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.
It asks for 5 permissions, 2 of them sensitive: read shared storage and modify shared storage.
What's new in v1.4
Release 1.2 : Support Android Pie Version
Release 1.1 : Initial Version
Description
From the listing uploaded by “catappult”.
SCal is Simple, Scientific, Smart Calculator that can be used by anyone (kids, student, teachers, professors, for fun, for work,..). It supports following features
Standard Operators + - *
Functional Operators ! (Factorial) ^ (Exponent) % (Percentage) @ (Remainder)
Bitwise Operators & (AND) | (OR) ~ (NOT) ^^ (Exclusive OR)
Shift Operators > (RIGTH SHIFT)
Operator Precedence PEMDOS BODMAS ( ) ^ * + -
Select Settings and Disable Precedence if you want input expression 2+3*4 to show 20.
Complex Numbers in the form of a+bi
Fraction Calculator e.g., ½ + ⅓ = ⅚
Results can be displayed in Hexadecimal, Octal, Binary , Fraction or Decimal
Current Expression can be saved using Send Or Enter Key.
Display Results in Local Language Format
Set Precision for Decimal Numbers
Results are computed after every click so need to press any Special Key to do computation - Real-time calculation
Digit Grouping : Comma (,) can be used to group digits without loosing meaning e.g,. 1,234,002 is treated as 1234002
Decimal Separator : Supports both . (Dot) and , (Comma) as Decimal Separator
Support Hexadecimal Numbers : Numbers starting with 0x or numbers containing digits A-F are treated as Hexadecimal Numbers.
Floating Point Hexadecimal Numbers are supported 0x3.a2p3
Angles can be specified in Radians or in Degrees.
Following functions are supported for real numbers
Trigonometric Functions sin, cos, tan, asin, acos, atan
Hyperbolic Functions sinh,cosh,tanh, asinh, acosh, atanh
Exponential Functions exp, exp2, log, log2, log10
Power Functions sqrt, cbrt,
Error Functions erf, erfc
Gamma Functions lgamma, tgamma
Round Integers trunc, round,ceil,floor
Absolute Functions abs
Complex Number Functions : Many real numbers functions and also complex number specific functions like abs, arg, norm, real, imag, conj.
Scientific constants supported are specified in App Keyboard.
Calculator Operates in Three Modes
1. Constant Algebraic Expression Mode ±√∿⊻
2. Polynomial Function Evaluation Mode f(x,..)
3. Statistics Mode 📈
Algebraic Expression Mode supports :
all operators, real numbers, hexadecimal numbers, floating point hexadecimal numbers, complex numbers and their related functions.
Polynomial Function Evaluation Supports maximum of five variables, variable name can be any character, for each character specified corresponding minimum, maximum and increment values are created with default value 1.
Graph are drawn for function with one variable.
Multiple functions can be displayed in the same graph, each function should be separated by semicolon
Function Mode accepts constant expression apart from variables.
In Statistical Mode input data can be list of numbers separated by space, semicolon or comma.
Following Functions are supported in Statistical mode
Sum,
Mean,
Product,
LCM,
GCD,
Minimum,
Maximum,
Median,
Mode,
Standard Deviation,
Range,
Count,
Permutation
Combination,
Percentile,
Sort Data in ascending or in Descending Order.
Constant Expressions are allowed in Statistical Mode
Statistical Data can be represented in Line Graph, Pie Graph, Bar Graph, or graph can be disabled.
Saved Expressions can be retrieved and added to current input expression using single click or double click. Single click appends result of the selected input expression while double click appends the actual selected expression.
Graphs can be saved as a PNG file and it's present under Download Directory.
Input Calculations and their results can be saved as an HTML file under Download Directory.
Labels X and Y Axis for Statistical Graphs can be specified in Settings.
User can use their own keyboard or Built In App Keyboard to enter expression, Use settings to use user keyboard.
App Keyboard lists supported functions, constants, variable name, operators, hexadecimal letters for easy access.
Help screen contains examples.
Security & authenticity
Security rating: Trusted
Signing certificate
Certificate issued to “Software Division”The developer's name — though anyone can put any name in a certificate.
Uploaded by “catappult”Platinum tier · 1,377 followers · uploading since 2018
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (5)
Scal(Free) requests 5 permissions, 2 of them sensitive.
Can I install this APK over the version I already have?
Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.
Is the Scal(Free) APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is 5b6fe20538f6e6060011c5da67d19d54.