According to G2 reviews of WriteUpp, the overwhelming majority of reviewers are small businesses with 50 or fewer employees, spanning health, wellness, mental health care, and allied health industries. WriteUpp's Solo pricing tier suits independent practitioners — therapists, foot health practitioners, counsellors — who need diary management, online booking, and secure records without multi-user complexity. The Group tier fits small multi-clinician clinics needing scalable licences and shared workflows. G2 reviewers in mental health care and health and wellness segments consistently extract the most value. WriteUpp's pricing structure is less optimised for large enterprises or non-healthcare businesses, despite occasional mid-market adoption noted in G2 data.