Powerful domestic tool: just embody in-purchase and earn. No reserve!

The app is already translated into 29 languages.

Make it freemium. Just implement in-purchase and let the user open additional options for money. Or earn on the ads.

For sale: source code of the app and the app transfer.

First, what you need to do - it's implement in-purchase and let users to buy additional features:
1. Range of turn off = 1$.
2. Allow to switch on flashlight and screen light at the same time = 1$.
3. Different colors of screen light = 1$.

etc.

Also you can earn on the ads. 

Another way - is to enable all features for a week as a demo and close most of them, until user pays. 

The app Night Lamp turns any phone into a voice-activated lamp. 
Especially recommended to try option when activated simultaneously flashlight and the screen, and on the screen is a smooth transition of colors.

So, it'll take a week or two for you to embody all suggestions and you will start to earn after that. 

If you buy it for BIN, I'll give you source codes of two 2 almost finished, unpublished promising apps. And also I'll gift you the engine for placing your own ads in your apps. Text me for details.