iPhone screenshot

Version 2.9.1 - 29.9.2011

  • Improvement: Reduced startup time.
  • Improvement: Show the legend in exported images and PDFs of plots.
  • Improvement: Make a "y=" prefix force a cartesian and "r=" a polar plot.
  • Improvement: Removed the occasional prompts to rate the application.
  • Bugfix: Improve compatibility with upcoming versions of iOS.
  • Bugfix: Fix a possible crash when opening the menu.
  • Bugfix: Make PocketCAS pro for iPhone work properly on iPad (but still with a frame).
  • Bugfix: Fix some glitches with popovers in PocketCAS for iPad.
  • Bugfix: Align line coloring in the plot legend with the corresponding plot colors.

Version 2.9 - 28.4.2011

  • New feature: You can now reset the coordinate system of a plot in the menu of the plot.
  • New feature: Plots now show a legend of the functions plotted.
  • Improvement: PocketCAS now has a new icon. We hope you like it!
  • Improvement: Updated some of the internal libraries used by PocketCAS. This leads to improved performance and stability.
  • Improvement: You can now change the settings of PocketCAS from within the application.
  • Improvement: Improved the keyboard layouts (both for portrait and landscape mode) in PocketCAS for iPhone.
  • Improvement: In PocketCAS for iPhone, double-tapping the gray function usage bar in the calculation editor now shows the function list.
  • Improvement: The gray function usage bar above the calculation editor can now be hidden.
  • Improvement: Tips are displayed less frequently now. They can also be disabled after dismissing the first tip.
  • Improvement: Users of PocketCAS lite should now experience less 'This feature is only available in PocketCAS pro' messages.
  • Improvement: Plotting e.g. 'y=x^2' (rather than just 'x^2') now also works.
  • Improvement: Removed the (useless) setting 'New keyboard style' from PocketCAS for iPad.
  • Improvement: Made the '1st steps' tutorial even simpler.
  • Bugfix: Fixed some minor errors in the FAQ and the tutorials.
  • Bugfix: Corrected the 'lg' button to output 'log10()' in PocketCAS for iPad.
  • Bugfix: PocketCAS will now properly recognize changes made in the application's settings (especially regarding disabling the tips).
  • Change: 'Graph' renamed to 'Plot'.

Version 2.8 - 25.11.2010

  • New feature: Graph tracing capability. Tap and hold on a graph to trace a point along the curve!
  • New feature: Extremes and zeroes are now highlighted in graphs. Tap an extreme (or a zero) to show its location!
  • New feature: Fullscreen mode for graphs.
  • New feature: Run charts. Just plot e.g. [1,2,3],[2,3,5] to connect the points (1,2), (2,3) and (3,5)!
  • New feature: Share menu for graphs. In a graph, tap the share button to show a menu with the following options:
    • Save to photos: Saves the current graph to the saved photos album.
    • Email PDF (iOS 4 and iPad only): Lets you send the current graph as PDF via email.
    • Copy PDF (iPad only): Copies the current graph as PDF to the clipboard so you can paste it e.g. into Pages.
    • Print graph (iOS 4.2 and later only): Print the current graph in high resolution - directly from your device!
    • Show value table: Shows a list with x-values and the corresponding function values for cartesian plots.
    • Email value table: Lets you send the value table in CSV format via email.
  • New feature: An all-new tips system with more useful, context-sensitive tips that are less intrusive! When upgrading to this version, tips will be re-enabled once. You can disable them again in the Settings application.
  • New feature: Support for astronomical constants: solar mass, solar luminosity, solar radius, earth mass, mean earth radius, astronomical unit, parsec, lightyear, sidereal day and sidereal year.
  • New feature: Documents now remember their name and are saved with that name automatically.
  • New feature: When trying to overwrite a document with a different name, you are asked for confirmation now.
  • New feature: Documents can now be sent via email.
  • New feature (iOS 4 and iPad only): Documents can now be opened from Mail and other applications.
  • Improvement: Updated to the newest version of the CAS kernel.
  • Improvement: Moved the 'Main' section of the portrait keyboard in PocketCAS for iPhone to the middle, so you have to swipe less in order to reach the 'CAS' section. Also improved the loading time of the keyboard.
  • Improvement: External display output on the iPad has been improved.
  • Improvement: Some minor improvements to the function reference.
  • Improvement: On iPhone 4 and iPod touch 4G, memory warnings should appear much less frequently now.
  • Bugfix: inf^inf is now inf rather than undef.
  • Bugfix: Minutes are used with _min rather than _mn now.

Version 2.6.2 - 4.8.2010

  • Change: Added iAds to PocketCAS lite.
  • Improvement: Some minor cosmetical improvements.
  • Bugfix: Fixed an issue leading to errors with limit(), desolve() and laplace().
  • Bugfix: Fixed an issue with the iPhone 4's retina display.

Version 2.6.1 - 9.7.2010

  • Bugfix: Improved the keyboard behavior on iOS 4.
  • Bugfix: Some more minor bugfixes.

Version 2.6 - 18.6.2010

  • New feature: In PocketCAS pro for iPad, the display will be mirrored to any external screen now.
  • New feature: Added Bessel functions of first and second kind.
  • New feature: You can now share documents via iTunes in order to transfer them to other devies (iOS 4 and iPad only).
  • New feature: Added singular value decomposition (svd) and QR factorization (qr) for devices with iOS 4.
  • Improvement: Improved the keyboard appearance on the iPhone.
  • Improvement: The DiGamma function (also known as Psi function) can now be plotted.
  • Improvement: Updated to the newest version of the CAS kernel.
  • Improvement: You can send support requests from inside the application now.
  • Improvement: Removed some almost unused settings.
  • Improvement: Optimized compatibility with iOS 4 and iPhone 4.
  • Improvement: Added a list of differences between PocketCAS lite and PocketCAS pro.
  • Improvement: You can upgrade to PocketCAS pro from within the application now. There's also a bundle for iPad + iPhone at a discounted price.
  • Bugfix: Improved the reliability of the alphanumeric keyboard.
  • Bugfix: Improved the reliability of function plots.
  • Bugfix: Plotting e.g. x^x now works properly.
  • Bugfix: PocketCAS no longer crashes when saving documents containing variables with units.
  • Bugfix: Saving functions in a document works properly now.
  • Bugfix: Several minor bugfixes for the iPad version.

Version 2.5 - 14.4.2010

  • PocketCAS pro for iPad is now available! Have a look at the App Store!
  • Improvement: Some minore improvements related to the iPad version.

Version 2.2 - 24.3.2010

  • New feature: Parametric plotting! The command "x^2,x" will plot a parabola for example. See the plotting tutorial for more details.
  • Improvement: Removed some useless units.
  • Improvement: The CAS section of the new keyboard shows more buttons now.
  • Improvement: Appropriate tips will now be shown when pressing the keyboard, ^(-1), hyp and trigonometric keys for the first time.
  • Improvement: If there is no last session available, the default tutorial will be loaded instead.
  • Cosmetical Change: Renamed the 'back' button from 'Session' to 'Cancel'.
  • Cosmetical Change: Renamed sessions to documents.
  • Cosmetical Change: Pressing 'Save' rather than 'Go!' will now erase the result in the document view.
  • Bugfix: Rotating with the iPhone keyboard will not mess the keyboard up anymore.
  • Bugfix: Fixed integration of periodic functions.
  • Bugfix: Fixed erf(x) for x < -3.
  • Bugfix: Some other bugfixes on the CAS kernel.

Version 2.1 - 12.2.2010

  • Improvement: Reduced the delay after the first press of a keyboard button.
  • Improvement: The axis system will now be shown when dragging a graph.
  • Improvement: Tutorials can now be edited in PocketCAS lite.
  • Improvement: New short "1st steps" tutorial with very basic instructions.
  • Improvement: Added separate symbols for _epsilon0_ and _mu0_.
  • Improvement: You can now choose the "Classic" design in Settings.app which feels slightly faster.
  • Improvement: Added links to rate PocketCAS and for email support to the app.
  • Change: Made the new keyboard style the default. You can still select the old style in the Settings application.
  • Bugfix: Improved display of custom functions like (x)->x^2.
  • Bugfix: Improved display of lines that are wider than the display.

Version 2.0 - 19.1.2010

  • New feature: Added 2D cartesian and polar plotting functionality with a corresponding tutorial.
  • New feature: Added a physical unit calculator with constants, plus a tutorial for it.
  • New feature: Added a new keyboard design with swiping features. You have to enable it in Settings.app.
  • New feature: Added a 'please rate PocketCAS' dialog.
  • New feature: Added tips that will be shown on startup.
  • New feature: Added 'New' and 'Delete' controls to the session view.
  • New feature: When you tap the title of the calculation editor's navigation bar, the iPhone keyboard will show up.
  • Improvement: Made the interface a lot more beautiful.
  • Improvement: The UI is more responsive now.
  • Improvement: Added some fancy animations to the text selection.
  • Improvement: The calculation editor's font size can be changed now.
  • Improvement: Added German translations for some undo actions and FAQ.
  • Improvement: Enabled comments to begin behind the beginning of a line.

Version 1.2.0 - 1.12.2009

  • Added a landscape mode with bigger keys: the landscape keys are 28% larger than those in portrait mode.
  • Added preferences for even larger keyboards (up to 25% bigger, 60% in total). You can find them in Settings.app.
  • Added descriptions to Undo operations.
  • You can now undo changes, inserts and deletes of calculations.
  • Updated to the newest version of the giac CAS kernel.
  • Created a German localization. FAQ, About and Function Reference are still in English.
  • Several minor improvements to make everything work more smoothly.

  • Changed the keyboard sound to have the iPhone's default keyboard tock volume
  • Save session allows uppercase file names now
  • Fixed erf() to be evaluated numerically
  • Improved behavior of ∞ symbol
  • Added a magnifying glass for easier text selection
  • Created a new application icon
  • Minor improvements to keyboard, function reference and FAQ

Version 1.1.0 - 21.10.2009

  • improved the keyboard's visual appearance
  • smoother scrolling and faster searches in the Function List
  • function lists automatically enter the search term on sub-lists
  • operator symbols are colored now, too (similar to parenthesis coloring)
  • memory warnings should appear less frequently now