Related Clues:

• PC sort?
• End-___ license agreement
• App purchaser
• Patron of a sort
• Tweeter, say
• Rehab enrollee
• One with an ID
• Touchpad toucher
• Not a good friend
• ___ testing (part of the beta stage)
• Not a true friend
• Client of a sort
• Employer to practise on river
• One with an instruction manual
• Pusher's customer