X-BASIC for iOS is on sale.
It was a plan to charge for sprite function initially.
However, I could not understand implementation of the "In-App purchases".
So this is the thank-you price.
Updated portion of V1.71 or later is as follows.
Change in V1.80
Add : program list print out
Add : key screen is almost reproduce at RUN screen display
Add : Hard copy function(output to AirPrint/PDF/JPEG/PNG/Album)
Add : keysns()
Fix : beep2(13) sound is illegal
Change in V2.00
Add : sprite and BG functions
Add : Enable to display two-stage function key in the portrait of iPod touch and iPhone.
Add : bitmapImageFile()
Add : bitmap functions can use same area as usual graphics functions.
Add : Scroll in text screen
Fix : osVersion() sometime returns illegal value.
Fix : Display of float value is not same as X-BASIC/68.
Fix : It is not rounded when you display float with no decimal digit in the "using"
Fix : Illegal setting at keyRepeatTime()
Fix : At 3.5 inches devices (iPod touch 4 and iPhone 4), the bottom of the screen is cut off.
Fix : tborder() is not display until print any contents.
Fix : It may fall at using float arrays.
Fix : The startAngle and endAngle of circle() is misinterpreted.
Fix : It may fall with repeating the selection of program
Fix : minor bugs
Fix : Bugs of sample BASIC programs
Fix : Manual mistake(many)
Some HTML grammar problem have been discovered in built-in manual on iPad.
I think that there is no hindrance to display the time being, but if there is a problem, refer to the latest version of the following: