Note: The NtK Model for Freeware contains Stages, Steps and Gates that may vary across the five sub-categories, as described in the five columns below.

Freeware Fee App Freemium/>$5 Free  DIY Fee DIY/Training
Minimum requirement is App store or Marketplace  Additional distribution channels should be explored (beyond App Store/Marketplace) Additional distribution channels should be explored (beyond App Store/Marketplace) Consider distribution through suppliers of adjacent information
Multiple distribution channels should be explored