can you tell me how much is the "key" is it one off or monthly?

Each licence key has a limit of 3 activations.
It is not a monthly subscription, so no monthly payments needed! Each activation registers on a computer by attaching to the hard disk's ID.
Sometimes after OS or any other major reinstall may have negative effect on licence, it counts new OS a new computer, you have a few additional activations added to your key already for such situations.
If you reinstall OS relatively often and face the problem of activation limit being reached, please contact us and we will fix your key right away.

You may purchase licence keys for 4K Download software on the following links:


4K Video Downloader - https://www.4kdownload.com/buy-ab/videodownloader


4K YouTube to MP3 - https://www.4kdownload.com/buy-ab/youtubetomp3


4K Stogram - https://www.4kdownload.com/buy-ab/stogram


There is also an option to get the keys for all applications and save some money by purchasing them as a bundle - https://www.4kdownload.com/buy/bundle