TCalc Scientific Calculator for iPhone and iPodTouch

Contact: T.Breitenstein@gmx.de

TCalc is a calculator with a huge number of functions. You can perform date, time and degree operations, calculations with complex numbers and prime number arithmetics. Statistical functions, unit conversions and physical constants are also included.

Getting help

tapping on the two white points on top opens the help screen.

Known issues

are (hopefully) going to be fixed within the next version (1.2) [probable release date 1/11/2008]. See update information...

problems with degree, hours or date input might appear after deleting values with
C
maximum and minimum value might not work correctly if a data point is subtracted
Phase is in rad and not converted to DEG
Determination of prime numbers is limited to 10000000 (later versions will include a probabilistic prime number test for bigger values)
Random numbers might turn out bad results, if a negative number is set in M

Examples

conversion of degrees and time

12°22'30" are

Result: 12.375

14:30:32 (i.e. 14 hours 30 minutes and 32 seconds) are (type in with

inv

Result:14.50888888 hours

Calculation with Complex numbers

Squareroot of -1:

+/-

sqrt()

Result: i

exp(i*Pi):

3.1415926539

exp

Result: -1

Date calculation

how many days between 15.6.1980 and 23.7.2008:
23.7.2008

15.6.1980

Result: 246360 (hours)

toTime

Result: 10265 days

What day of week was 3.10.1970?

3.10.1970

Day

Result: Saturday

Prime numbers

Is 124561 prime?

124561

isPrime

Result: yes

what are the prime factors of 16783?

16783

P.fac

Result: 13

P.fac

Result: 1291

P.fac

Result: -1
e.g. 16783 = 13 * 1291

what is the next prime to 56299?

56299

nxPrime

Result: 56311

Random numbers

To get random numbers between 0 and 1 just type "ran"
If you need integer random numbers between 1 and 6 (for a dice) just load the Memory "M+" with 6 and then "ran" will produce the appropriate numbers.

Statistical data

What is the average and the std deviation of this data set: 2,5,6.7,8,2.1
Just add all data with the

Data+

key
then get the average with

" Result: 4.76
and the std deviation with

inv

s k

Result: 2.693139
if you are interested in the geometric an harmonic means:

geom

Result: 4.076
and

harm

Result: 3.447

Unit conversions

How many gallons are 12.3 liters?
12.3

inv

l2gal

Result: 3.249316