Graphmatica for iPad/iPhone beta test

• Graphmatica for iDevices requires an iPhone, iPod touch, or iPad running iOS 5.0 or newer. If your device doesn't have this version installed, you may be able to download the update from Apple for free and install it via iTunes. iOS5 runs on iphone 3GS and newer, 3rd and 4th gen iPod touch devices, and all iPads.
• I need your device ID in order to authorize you to run the app on your phone or iPad. Sign up at my beta-test recruiting page and the folks at TestFlightApp.com will take care of collecting that information for me and notifying you when I've updated the build so you can run it.
• Apple only allows me to authorize 100 testers per year as an iOS developer, and I'm down to the last 10, so please only sign up if you can take some time to actually use the app for a while and send me your feedback. If you are just kicking the tires and want to see what Graphmatica can do, I ask that you download the free trial version for the Mac or Windows instead.
• Should you run into a bug or graphing error, please send me the document you were working on using the Email <curent graph document> item in the Edit menu to send mail with the document attached to support@graphmatica.com.
• I need your feedback not only about bugs, but also about any usability issues that are unique to the tablet format:
  • Do the custom virtual keyboards for equation editing and numeric data entry make it easier to enter these inputs than the standard system keyboard? Does the keyboard layout for the equation editor make it easy to find keys and enter equations with the minimum amount of finger travel and typos requiring correction? Or can you suggest better locations for some keys or additional keys that would make it easier?
  • Do the dialog layouts make efficient use of screen real estate? Or can you suggest alternate arrangements that would let you see more information at once?
  • Are there any dialogs where the keyboard obscures the text field you're trying to type into?
  • Can you easily find all of the features you normally use in the desktop version of the program? Or would an alternative access path help?
  • For iPhone 4 and "new iPad" users with the Retina display, are there any places where text shows up in the wrong size or things look worse instead of the same or better on your high-resolution screen?
• If you'd like to help translate the new version, I have a number of translations of the Windows version available to work from, so the work will mostly just be a lot of copy-and-paste. Contact me if you'd like to participate.

Sign up on your iPad/Phone/iPod touch here!

1. This program is a work in progress. Be prepared to hit a crash and potentially lose work. If you experience a hang or a crash, please email me with any information you can record about what you were doing at the time (and a saved .gr file if you can reproduce the problem). When you are online, the current build of the program will send crash reports back to TestFlight automatically for me to peruse, but it will still help me to know the context.
2. The beta test version will eventually expire a year from the build date and will no longer be runnable at that point. I should have a version available in the app store before then, and will provide a promo code to get the final version for free as a thank you for the first 25 people who provide feedback during the beta period.
3. Please report any bugs you encounter, no matter how small, by emailing me at ksoft@graphmatica.com. I will post a list of known and fixed issues here as the beta-test period proceeds. But if I don't know about it, I can't fix it.

You need not write me to report these; I am already planning to address them as soon as my schedule permits.

1. A limited subset of the online help is available. You can browse the complete set of help pages for the Mac/Windows versions on my web site.

In general, I've tried to match the features and layout of the PC/Mac versions of the program when possible. In some cases, though, I have made adjustments to comply with Apple's Human Interface Guidlines, work around the lack of certain controls in the iPad UIKit library, or otherwise better integrate with the iPad user experience.

1. The toolbar/menus at the edge of the screen only contains commands for actions that don't really pertain to a specific curve or part of the grid. To find the rest of the commands, try tapping on various parts of the grid:
   • Tap on the labels area outside of the grid boundary or x/y axes labels to see labels-related actions
   • Tap on the legends to see legends-related actions
   • Tap on a curve to delete or hide it, or access any of the numerical evaluation features (point evaluate, find intersection, and all calculus features).
   • Tap on the point tables to see tables-related actions.
   • Tap on the background to add an annotation or clear the whole screen
   • Tap on an annotation to edit or delete it, or hold and drag an annotation to move it. (Note that with this feature and in-place editing, the Annotations dialog box no longer seemed necessary, so it is gone.)
   • Hold and drag the dot marking the point on the curve for a tangent line to compute and display the tangent line for another point on the same curve. Hold and drag the point on a curve the start or end of the area integrate to change the integration region.
2. All zooming/scrolling around the grid is accomplished via direct manipulation fo the grid using the standard "pinch zoom" and drag-to-scroll gestures. You can still fine-tune the displayed grid range using the Grid Range dialog or revert to the default grid.
3. To change to a non-square grid, use the Grid Range dialog to enter the domain and range by hand, or turn off the AutoSquare feature (Settings -> Preferences -> General Settings) and pinch-zoom along the axis that you want to change. (Pinch-zooming on a diagonal will always scale both axes equally.) To get back to a square grid, use the Default Range button or leave 1 or 2 coordinates blank in the Grid Range dialog.
4. All modeless dialogs (point tables, data plot editor, calculation-oriented dialogs) are displayed next to (rather than obscuring) the grid. In portrait orientation, they assume a horizontal layout stacked on top of the grid; in landscape, they are arranged vertically to the right side. Only one modeless panel will be displayed at a time.
5. Most dialog box choices involving radio buttons have been switched to use segmented buttons instead. Additional settings related to specific radio button choices have been moved below the segmented button. In some cases, these controls are now hidden unless you select the related setting in the master button.
6. The Point tables columns (and pane) are not resizable. Also, exactly one equation is always displayed per table.
7. The Set Initial Value feature has not been implemented on iPad. The interaction design for this feature basically requires a mouse, and I am skeptical that a touchpad-oriented design would actually be any easier than just typing the initial value directly using the domain-specifier notation "{t,x,dx, etc.}"

1. The Point Evaluate, Find Intersection, Find Critical Points, and Data Plot Editor features are implemented as full-screen modal views. There is simply not enough screen space on the phone to display the grid and the results side by side.
2. I've omitted the Fonts tab of the Graph Paper settings. Let me know if you don't like any of the font choices I've made for you.
3. Some dialog boxes don't quite fit comfortably on the screen in either portrait or landscape mode. But you should be able to scroll them one way or another to see all of the settings.