This app was removed from the App Store.
i41 CAS RPN Calculator
iOS iPhone Productivity
*** AVAILABLE ONLY FOR A LIMITED TIME, DON'T MISS OUT! ***
* Now with the i41CX+ CAS engine! *
To celebrate i41CX+'s second anniversary, we are making this special edition of i41 with the i41CX+ CAS engine available for a limited time. The CAS engine in this release is functionally identical to the one in the critically acclaimed i41CX+ with just a few limitations.
i41 is based on the highly rated i41CX+ but with its keyboard pre-configured to meet the needs of casual and moderate RPN scientific calculations. i41 is a showcase of the power and flexibility of its fully featured parent, i41CX+. Even without the advanced features of i41CX+, i41 CAS is a powerful RPN calculator for the iPhone and iPod touch that will meet many users' calculation needs in a comfortable portrait form factor.
• RPN logic with 4 element stack
• Powerful and flexible Computer Algebra System (CAS) supporting symbolic, arbitrary precision, scalar, vector, and matrix algebra calculations, 2D/3D plotting, and much more
• Full-screen text editor with configurable font style and size, color scheme, and 15 key macro keyboard pre-configured for simple CAS use
• Arithmetic, trigonometric, mathematical, time, and statistical functions
• 52 main memory registers for temporary storage of data
• Statistical functions (MEAN, SDEV)
• Time functions (HMS, HR, HMS+, HMS-)
• 12 character display
• Copy and paste support
• Option to hide mini stack (X, Y, Z, LastX) display and use the iPhone/iPod touch status bar instead
• Automatic decimal and thousands delimiter separator style
• User adjustable feedback sounds volume
• Extremely responsive and animated key clicks with optional glow feedback effect
• Beautiful and clean user interface optimized for the iPhone and iPod touch portrait mode screen aspect ratio and to maximize the keypad area while still providing for a full featured scientific keypad
NOTE: Because i41 does not have a persistent state, the FIX/SCI/ENG setting is set to 4 decimal places every time the application is launched. Data registers are also cleared every launch. If persistent state is important to you, please consider purchasing i41CX+.
*** NEW in this release ***
Powerful CAS: To celebrate i41CX+'s second anniversary, we are making a limited version of the i41CX+ CAS available in i41 for a limited time.
• Built for iOS 4.
• Incorporated i41CX+ I41CXED full-screen text editor and CAS engine.
• Added iAds.
• Fixed bug in the 3.0 release that under certain conditions could cause a black screen when updating from a previous version.
*** NOTE To Users of Previous Versions ***
This update contains iAds that are displayed in the top portion of the calculator display area (except when the CAS or back view screens are active). Therefore, please take this into consideration before you update from a previous version.