[Android Apps and Games] StupidIdea:
It does NOT modify system files. If something unplanned happens, just reboot your device and it will restore your stock navigation bar.

Note: If you don't have root but you have KitKat or Android L you should try: GMD Full Screen Immersive Mode (no root) instead. It uses native KitKat immersive mode. You can find it in PlayStore and XDA.

This app can hide navigation bar without reboot and modifications.

It worth on devices with Phone UI, Phablet UI and devices with hardware keys.

It does not work on Tablet UI.

Thanks oode for video review:

[YOUTUBE]yWEspW14aac[/YOUTUBE]

Unique Features:

- Hide just navigation bar and keep notifications bar.

- Show Quick NavBar and click soft button with one simple swipe.

- Theme Quick NavBar.

- Adjust trigger size and position.

- Integrate with Gesture Control or Tasker using Shortcuts.

- Stock firmwares and Paranoid Android supported.

- No system modifications are done

- No reboot required to hide/show stock keys.

Differences to other status bar hiding apps:

* Does not remove notification bar

* Does not modify system

* No need to reboot

* Stock Notification panel and settings panels are fully working

* Stock recent apps list is fully working

* No problems with receiving phone calls

Known problems:

* Sometimes resets wallpaper to default.

Play Store: https://play.google.com/store/apps/details?id=com.gmd.hidesoftkeys

Google+ Beta testing community - JOIN to automatically receive latest beta version

Even if you download from XDA you can still purchase PRO key and key will be managed by Play Store. This means that once unlocked, app will always be unlocked - no matter if it is installed from XDA or Play Store. You can switch between XDA/PlayStore version any time without loosing key.

Changelog:

2.0:

Android 4.4.3 support

Fully customizable buttons actions

Customizable QuickBar color

Customizable buttons color

Customizable buttons icons

UI update﻿

1.3:

- Fixed start on boot.

- Fixed reported FC.

1.2-beta:

- KiKat support

1.1:

- Added Landscape Side Mode - by default ON for smaller than 7'' devices

- Added CM 10.2 support

1.0:

- Android 4.3 support.

0.9.11:

- Fixed: Previous button stays on screen after pressing Back

- Fixed: Inverse button option

- Button spacing will take advantage of Menu button being hidden

- Added option to hide Expanded desktop key on PA and CM.

0.9.10-dev3

- Improved button layout formula.

- Pac Rom support

- Added more themes: Zenyth (by Arz Bhatia), Airbrush, Facebook.

0.9.10-dev2

- CyanogenMod support

0.9.10-dev1

- Added Hide QuickBar shortcut.

- Added Close All for PA

0.99

- Added trigger mode option: SWIPE or TOUCH (default now)

- Added option: Hide Soft Keys. Uncheck it if you have other means to hide soft keys and just want to use Quick NavBar.

- Added Haptic feedback option on button press.

- Added 'Close All' for PA rom too (was added for stock earlier).

- Improved service life time.

- Fixed some text labels.

0.99-dev1:

- Added trigger mode option: SWIPE or TOUCH

- Added option: Hide Soft Keys. Uncheck it if you have other means to hide soft keys and just want to use Quick NavBar.

- Improved service life time.

- Fixed some text labels.

0.98:

- Bug fixes

0.97:

- Improved stock buttons ON/OFF speed

- Fixed: some options changing to old value

0.96:

- Quick NavBar animation

- New ring buttons (similar to Google Now) - Previous, Close All, Screen Off

- Menu button ON/OFF option

- Instant ring button show when swiping up from soft key.

- Fixed: Quick NavBar not hiding in some rare cases.

- Fixed: hide Quick NavBar on screen off.

0.95:

- Trigger now auto hides (become transparent) in full screen apps like YouTube, video and games. You can still show Quick NavBar with swipe in full screen.

- Added built in themes: NEXUS, NEXUS2, GALAXY, XPERIA, RAZR, HONEYCOMB

- Custom... theme - user can select custom images for buttons.

0.95-dev1

- Trigger now is hidden automatically in videos and other full screen apps. It still works with swipe up.

- Fixed: Google Now button sometimes stays on screen.

0.94:

- Theming. Select any PNG for buttons: http://xdaforums.com/show....php?t=1413582

- Shortcut to show Quick NavBar. If you like Quick NavBar, now you can disable trigger and use GMD Gesture Control to show it.

- Short Google Now button delay.

- Button spacing slider

- Trigger color picker and transparency slider.

- Support for devices without soft buttons - Galaxy Note's and similar phones.

- Changed auto hide delay slider to milliseconds.

0.94-dev2:

- Added theming. Select any PNG for buttons. You can find soft keys collection here, but any other transparent PNG will work too.

http://xdaforums.com/showthread.php?t=2005937&highlight=soft+buttons

- Added shortcut to show Quick NavBar. This is mainly for integration with Gesture Control. If you like Quick NavBar, now you can disable trigger and show it with any custom gesture.

- Reduced Google Now delay. If you had problems before, let me know if this version improves the delay.

0.94-dev:

- Added button spacing slider

- Added 0.5s delay for Google Now button

- Added trigger color picker and transparency slider. Also decoupled trigger sensitivity slider from trigger visible height. Visible height will be always the same now.

- Added support for devices without soft buttons - go figure :o, some users asked option to use Quick NavBar on Note's and similar phones.

- Changed auto hide delay slider to milliseconds for finer adjustment.

- other small bug fixes.

0.93:

- Added Google Now button when Home is hovered. Added animation.

- Added option to hide QuickNav bar when empty space on bar is pressed.

- Added option to keep/hide QuickNav bar when pressed anywhere else on scren.

- Added option to delay bar hide after pressing soft button. Pressing new button resets delay.

0.93-dev:

- Added Google to Home button.

0.92:

- Added Quick NavBar transparency slider.

- Uploaded new version to Play Store.

0.91-dev:

- Added Paranoid Android support

- Added Extended Mode (full screen) button to Quick NavBar in Paranoid Android.

0.9:

- Added IAP key purchase.

- Published in Play Store: https://play.google.com/store/apps/details?id=com.gmd.hidesoftkeys

0.8:

- New icon

- Added auto start on boot option

- Added launcher shortcuts: show, hide, toggle soft keys

0.7:

- Added Trigger position, width and size options.

- Added Quick NavBar size option.

- Added option to auto hide NavBar when selected buttons are clicked.

0.6:

- Fixed: FC in some cases.

0.5:

- Added 'Spoof soft keys' option.

- Added notification option with soft keys toggle.

0.4:

- Added UI mode detection.

- Fixed: status bar replacement stop working.

- Adjusted buttons size.

0.3:

- Added ability to swipe on buttons after showing autohide bar without releasing screen.

- Bugfixes

0.2:

- Fixed buttons layout.

Versions ending with "-dev" are development versions. Latest stable version is 0.9.11