Touch RPN for iOS: Settings

To open the new Settings pane, press the ON button, then "Settings" at the right top corner, to access the preferences panel.

Figure 1: Settings pane

Number format: decimal and thousands separator. Three formats are available: USA, European and Indian.
Layout: in Auto mode, layout follows phone orientation. In modes Landscape or Portrait, layout is locked to horizontal or vertical, respectively.
Tactile feedback: Sound and/or vibration (haptic) on every keypress.
Visual feedback: When enabled, shows a small green rectangle on every keypress.
Fast program execution: When enabled, programs run at maximum possible speed. When disabled, programs run in a speed similar to a real calculator.
Don't sleep: When enabled, the display will stay fully lit and unlocked while the app is on-screen.
Stretch to fill screen: how much the interface is "stretched" to fill most of the screen. Using more screen estate means easier typing, but looks more distorted.
Restore Purchases: Normally the purchases are downloaded automatically. If you feel it's taking too long, this button tries to contact App Store immediately.
Reset to Defaults: Resets all settings to post-install defaults. Even the flavor goes back to Financial (with ads). Note that purchases are always preserved, as well as memories saved in iCloud.