There are two versions of SnipNotes:
- SnipNotes for iOS (iPhone, iPad, Apple Watch) is a free download. After 7 days, a one-time activation for $3.99 is required
- SnipNotes for macOS (MacBook, iMac etc.) costs $4.99 on the App Store and doesn’t offer a free trial period at the moment
You can use both versions on as many devices as you like. Apple doesn’t provide a way to bundle iOS and Mac apps into a single purchase yet, unfortunately.