Running a small business means dealing with paperwork, and faxing is still part of that for me. I tested several iPhone fax apps because I needed something dependable for legal documents. Some apps looked good but failed when I needed them most. What finally helped me choose was this guide: https://geekflare.com/software/best-fax-iphone-apps/. It compares the best fax apps for iPhones in 2025 with a focus on business features. Based on that and my own testing, I picked an app that offers clear scans, delivery receipts, and secure transmission. Since then, faxing has been smooth and stress-free, without any physical machine or office setup.