Upgrade two important components: unit converter & currency converter. Both support more data (600+ common units & 140+ currency) and implemented a powerful search function. I also release the standalone version for them (if you like, search “handyConverter” and “handyCurrency” in Market).

handyCalc 0.40 is the first version for the 0.4x. It does not has much improvements, but you can see a new on screen keyboard, which saves runtime memory and more easily for you to operate. I hope you like it.

More improvements is under development and need more time to merge to the main project. And the performance will be optimized to reduce the startup time and improve the graph plot in the version 0.4x.

The keyboard issue in cupcake has been fixed in this version. Further cupcake support will come in the future version.

And the % button in the screen keypad has been removed. People always complain about 100-25% doesn’t equals 75%, while handyCalc take 25% as 0.25 (there is no data type for percentage in the core). The logic is confusing, so I do not recommend to use it. But you can still type % in your hardware keyboard to use it.

There is a serious calculation bug in the math core of v0.38, sorry about that.
The latest version v0.38b has fixed that. Please update.

handyCalc v0.38 released, with some bug fixed, and following changes:

• math core improvements, with more solving ability.
• fix the graph drag problem.
• tutorial (auto update, more tutorial will be added in the future)
• turn off currency exchange rate update.
• more…

BTW: part of the user who install handyCalc in Feb. 2009 will probably fail after update. Reinstall the application from the Market can solve this problem.

here is a complete video which introduce the math related features of handyCalc. not all the features, but the most valuable i think.

BTW: version 0.38 is on the way.

The new version of handyCalc release in the chinese new year with the following improvements:

• several bugs fixed (thanks for those who send bug report to me)
• keypad change with % button and available in both orientation
• solving improvements
• math core improvements
• graph efficiency improvements
• other minor improvements to make it a better application

if you think handyCalc is helpful to you, you can help in several ways:

• report bugs. handyCalc is a complicated program, and there are lots of bugs in it. report bugs to mmin18@gmail.com, and the next version of handyCalc will be more stable. (btw, handyCalc will generate a bug report each time it crash or catch serious exceptions, and will notify you to report it by email.)
• visit wiki site http://sites.google.com/site/handycalcsite/ to see if there is any improvements you can help. read the instructions in the homepage first.
• donate handyCalc

• bug fix
• no more overlap
• bigger keypad button
• draw graph in new activity (can choose in the preferences)

handyCalc 0.32, the first release on Android Market, in 2008-12-3.

Applications -> Productivity

update list:

• use database instead of files to manage the pages
• press enter key to show the result directly
• menu shortcut, like Menu+C to copy, Menu+V to paste
• use system clipboard, now you can copy and paste formulas into text format
• keypad visibility in both landscape and portrait mode.
• zoom mode and goto function
• support for non-decimal bases (hex, octal, binary)
• multiplication symbol on the G1 keyboard (×)
• updated demo (help->demo)
• factory reset in preference’s menu
• improvements to make handyCalc more easier and more stable

handyCalc is free, but i haven’t decided to open source yet.