• Scientific Calculator (adfree) 1
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Scientific Calculator (adfree)

TechCalc+ contains 12 computing modes in one application + a handy reference section.Modes included are:

* Basic Mode,
* Scientific Mode,
* 64-bit Programmer Mode (Hex, Oct, Bin and Dec),
* Graphing (save copy of graph to sdcard),
* Matrices,
* Complex Numbers (cartesian, polar, using Euler's identity),
* Quick Formulas,
* Quick Converter,
* Time Calculator,
* Equation Solver,
* Calculus (Derivative, Definite Integral, Taylor Series & Indefinite Integral)
- requires Android version 2.3 or higher
* Financial

+ the Periodic Table of Elements!

Features include:


* All Trigonometric operations (radians, degrees or gradients)
* Powers & Roots
* Logs and Antilogs
* Factorial, Modulus & Random Numbers functions
* HCF, LCM, Prime factorization
* Pol() & Rec() Functions
* Permutations (nPr) and Combinations (nCr)
* Statistics
* Fractions Mode
* A wide range of conversion categories and constants
* 20 Memory Registers in each of the calculation modes
* Detailed calculation history
* Extensive Help and Reference
* Highly customizable via the Settings

The reference section includes:


* Physical Laws
* Names in the Metric System
* Mathematical Tables
* Elementary & Linear Algebra
* Trigonometric Identities
* Differentiation & Integration Rules
* Statistics Formulas
* Vector Mathematics
* ASCII, Fractional Bits, Roman Numeral & Number Base Converters
* pH, Interpolation, Body Mass Index (BMI), Percentage, Proportion & Molecular Weight Calculators
* Sigma & Pi Notation
* Balancing Chemical Equations
* Statistics (Grouped Data)
* Integer Sequences

Please email any questions that are not answered in the Help section.

Category : Tools

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Reviews (29)

Jam. B. Sep 5, 2020     

Love it!! Does all you could imagine and more. Cheaper than buying a dedicated calculator. I do have a question. I'd love to copy the answer to a problem to the clipboard to use in other apps. I convert decimal to binary frequently and this would be very handy. I don't see how to send values to the phone clipboard

Ian. G. Feb 9, 2021     

This really is the best calculator app going but it's so much more than that. After years of using it I've just stumbled across an entire reference section that I didn't even realise was buried in there. Amazing! I love the interface, please don't ever change it :) I don't think it can be bettered. It's not gimmicky like so many other attempts at this sort of thing it just works, efficiently and elegantly. Proper 5 stars, thanks for making such a great app.

Utt. K. S. Mar 27, 2019     

Missing the sandwich menu to select different types of calculators, settings etc. if we slide from right we get the menu but in my redmi note 6 pro full screen mode im unable to slide it from left as in full screen mode gesture control is enabled and that sliding leads to go back. So everytime i use Techcalc+ i have to switch to button mode. please fix this. Thanks. Update: Found the menu. In full screen mode we need to slide from left to right on top (area where calculations are displayed).

Chi. S. Jan 30, 2022     

Great calculator. One small issue with Sci Calc mode and RPN. Power key is labeled x^y but for RPN it should be labeled y^x to match the labels of the registers.

Kas. G. May 16, 2022     

excellent app but the ui is old....please change its ui. Please add vector calculator

Kar. D. Jan 4, 2020     

Overall, great calculator! My problem from before was promptly responded to and is now resolved! 5 stars for sure! The thing keeping this from 5 stats however is the comma placement in large numbers. Commas should be placed after every third digit, not second, which is what you have and it makes it very difficult to read larger numbers.

Hen. L. Oct 31, 2021     

I'd tried many good & very good Calculator Apps out there, and I found TechCalc+ is one of the Best. It is not just a scientific calc, it has built-in variety of extended complex calculation capabilities & references: math learning, financial calc, time calc, unit converters, etc. • Overall, definitely highly recommended excellent educational product. • A friendly price for a quality product. Highly recommended. • Thank You ツ

GEN. L. Jun 21, 2019     

one of the best and most useful calculator apps available. very versatile and well thought out user interface. It gets updates from time to time, so is constantly evolving for the better.

C.P. L. Dec 28, 2018     

Adfree version at only MYR4 is a steal. It is much more than a sci-calc with so many sci and math references, physical & chemical laws and equations, tables and a detailed Periodic Table of Element. Extensive Help included. Simply a one-stop app for science reference.

A. G. u. Sep 17, 2021     

Worth the modest fee. If you are a computer engineer be aware that data storage calculations use the IEC "standard" so 1 kilobyte is converted to 1000 bytes and not 1024 which makes no sense since it not a power of 2/binary number). This will throw off your calculations if you use the actual 1kb=1024 bytes conversion (the practicing standard). I've been a computer engineer for 35 years and have never seen anyone in IT convert 1 kb to 1000. I wish I had the option to not use the IEC values.

Dud. F. Apr 12, 2019     

I love this little (!) calculator. I love Euler's equivalence in the icon. It's great to have so much data built in. to the app. The haptic feedback on the buttons is reassuring. Really can't fault it. Well done guys!

Ken. P. Sep 18, 2019     

Mostly very useful but navigation and graphing is extremely slow. Added another star for the welcome addition of RPN modes. Great work.

Gab. P. Oct 17, 2020     

This is it. Do not search further. What is missing, it will be added by the programmer giving him some time. Responsive and robust piece of math art.

Dr.. R. M. Dec 14, 2019     

This is an excellent calculator having all the features in one. You will get everything in it. It's lot more than a scientific calculator. There is no any other calculator which can beat this.

Ram. P. Jun 30, 2019     

One of the best calculator apps. You can completely customise the color of user interface and create custom formulas. It has all functions that one can look for: scientific, statistical and financial including generating table of EMI for loan

Gar. C. May 23, 2021     

It's terrific. I'm not in any way a scientist or mathematition but I find this app has the answers to so many questions that arise in the course of everyday life. Everything from basic sums to the periodic table.

Car. S. Jan 7, 2019     

The BEST! This calculator is simply stated, THE BEST. It does everything and is easy to use. 99 cent upgrade cost is minimal. Wow!

A. G. u. Jan 7, 2019     

Best calculator ap I've found yet. Plus it does other things, far too many to put in a review. Also it's not expensive. Only $1.29 (CND)

Ste. W. Dec 6, 2019     

Quite the best calculator app that I have ever found. It does everything I need it to do and much else besides. I have been using it for several years with no problems.

Aam. M. Jan 14, 2022     

the best you can imagine! Please, add LCM and HCF calculator also to make it most valuable tool for students of all grades...

Pet. K. Nov 28, 2019     

Perfect. Nothing more needs be said. Regularly maintained & updated, brilliant. Just keeps getting better

Don. E. Apr 25, 2021     

This is an excellent algebraic calculator. The multiple calculators make in useful for general or specific calculations the ability to view graphs adds greatly to the usefulness

Ear. D. J. Dec 29, 2018     

Featured packed and highly customizable. I was happy to make a one time purchase of this app.

Oni. S. Nov 17, 2018     

Best scientific calculator. It has equation solver, financial calculator, many built in scientific formula and constants, matrices, complex number function, even periodic table!

Old. M. Oct 3, 2020     

Just skimmed thro funcs ,impressively featured for few bucks. Have powerful calc if I need it eng ,tech ,uni, highschool etc. Thx .

Jac. B. A. Aug 28, 2020     

Powerful, easy-to-use, helpful and good for all users types

Mri. S. Sep 25, 2018     

Cool app, just few problem, can you add an option to decrease font size in setting?

Fir. L. May 30, 2020     

PEMDAS!!! This thing ignores operator precedence completely. Has lots of nifty features, but ignoring the precedence order is UNFORGIVABLE. WHAT IS the derivative of 2x^2 divided by itself??? It is ZERO, but this thing forces you to fill your equation with () or you get a ridiculous result. Should get refund. Wasted money.

Pet. v. H. Aug 27, 2019     

This app has everything I need, everything I could ever think I need and tops it with some more.