Using an Instagram viewer crosses the ethical line when it transitions from casual interest to persistent monitoring or "digital trespassing." Instagram’s private settings represent a user's explicit desire to control their audience; bypassing this can undermine digital trust. However, many users rely on tools like
viewverio.com to browse public content or stories without triggering notifications or leaving a trace. While not inherently illegal to use for viewing public data, these services should never be used for harassment or stalking. Responsible use means respecting boundaries and choosing platforms that don't require your personal login, thereby protecting both your privacy and the creator's intent.