# Staying up to date, and upgrade policies

Updates of Noise Ninja are posted at www.picturecode.com/download.htm

Different versions of Noise Ninja are numbered using a decimal scheme, where the number to the left of the decimal is the major version and the number on the right of the decimal is the minor version. For instance, version 2.0 has a major version of 2 and a minor version of 0.

When you purchase a license for Noise Ninja, it will work with all subsequent minor version updates for the same major version. For instance, if you purchase a license for version 2.0, it will also work with 2.1, 2.2, and so on. Just download the update, and your existing key will work with it. You do not need to purchase a new key.

Major version updates -- for instance, from 2.1 to 3.0 -- might require purchase of a new license key. The new key might be offered with an upgrade discount. Also, each key has an issue date encoded in it, so the discount might vary according to when the key was issued. (For instance, you might not be charged, or you might receive a larger discount, if you purchase a key 30 days before a major update.) Realize, however, that the discount policy for major upgrades is not fixed, and any discounts will be determined uniquely for each major release.