You can use these calculators to calculate x-number, logarithms, roots, trigonometry, and more..

**X-Number
**

Calculator with extended numerical keyboard capable of entering a number in the same way as it is pronounced verbally.

Digits Calculator is much more than a simple calculator. It is a more of a calculating tape that can be edited and refined as you do your math. The tape allows you to go back and change numbers. Another amazing feature is the ability to label your entries, which makes it great for remembering what that number is for. Multiple tapes are supported in the app, which help you carry out multiple calculations.

**Calc for iPhone
**

The idea of »Calc« is quite simple: a table calculator that is not overloaded with keys and functions but one that provides an easy to use interface with just the operations you need the most. »Calc« intentionally includes just the basic airthmetic operations. The whole computation path is always visible next to the number keys.

**Soulver - the notepad calculator
**

Soulver is the ultimate app for doing quick calculations and figuring stuff out on the iPhone. It's a far more elegant way to work with numbers than a traditional calculator.

**TouchCalc
**

TouchCalc is a comfortable calculator program and offers several different modes.
- The scientific mode offers all the usual functions and operations like the basic arithmetical operations, power, logarithm, roots, trigonometry etc.
- The bit/integer mode offers logical operations (AND, OR, XOR, >>, etc.) on bit level. All values can be displayed as binary, octal, decimal or hexadecimal numbers. Calculations can be done in 8, 16 32 or 64 bits.
- In the statistics mode you can create a sample by adding several values and then calculate mean, median, quantil values, variance, standard deviation, range etc.
Colorized keys will help to distinguish between the different categories of the functions and operations.

Digits Calculator is much more than a simple calculator. It is a more of a calculating tape that can be edited and refined as you do your math. The tape allows you to go back and change numbers. Another amazing feature is the ability to label your entries, which makes it great for remembering what that number is for. Multiple tapes are supported in the app, which help you carry out multiple calculations.

**Calc for iPhone
**

The idea of »Calc« is quite simple: a table calculator that is not overloaded with keys and functions but one that provides an easy to use interface with just the operations you need the most. »Calc« intentionally includes just the basic airthmetic operations. The whole computation path is always visible next to the number keys.

**TouchCalc
**

TouchCalc is a comfortable calculator program and offers several different modes.
- The scientific mode offers all the usual functions and operations like the basic arithmetical operations, power, logarithm, roots, trigonometry etc.
- The bit/integer mode offers logical operations (AND, OR, XOR, >>, etc.) on bit level. All values can be displayed as binary, octal, decimal or hexadecimal numbers. Calculations can be done in 8, 16 32 or 64 bits.
- In the statistics mode you can create a sample by adding several values and then calculate mean, median, quantil values, variance, standard deviation, range etc.
Colorized keys will help to distinguish between the different categories of the functions and operations.