Under Branding in the app, you set your logo, colours and fonts. The report adopts them, as do the client report and the PDF.
The branding applies only to the reports. The app itself remains Snaglist.
Under every report, there is a small line that says "Made with Snaglist". With Agency, this line disappears.
You can upload your own font as a WOFF2 file. The report then loads it, so it looks the same for your client as it does for you.