A plan that opens on the gym floor
Plans sent as email attachments get opened once at the desk and then lost. On the gym floor, between sets, with one bar of signal, the client needs the plan in two taps. A link does that: it opens the PDF in a viewer in the phone's browser, no app to install, no login to remember, and it can sit on their home screen like an app icon. Pages are easy to flick through and zoom into when the font is small.