On BetaReader.io we always try to keep our readers in focus and want their reader experience to be as good as possible while still making it secure to share an unfinished manuscript with them.
To have a high security standard we don't allow readers to download work from BetaReader.io.
Our supported reading platforms are:
Web - Mac/PC - Official support latest version Chrome (IE, Firefox & Safari will work but are not as heavily tested)
Mobile web iOS/Android (no inline-comment support)