Starting with v4 Writing Shed uses a so called Freemium model. This means that new users (Mac and IOS) can download the app and use it for free for 14 days. All app functionality is available during the trial with the exception of iCloud Sync. At the end of the trial period users are given the option to make an In-App purchase that will give them continued access for an unlimited period. This option is also available at any point during the trial. If a user decides not to upgrade then they can continue using the app but won’t be able to add any new projects/documents.
Users who bought either app pre v4 are unaffected by this change.