Android
Open BikriBook in Chrome, tap the ⋮ menu, then "Add to Home screen".
BikriBook runs in your browser, so there is nothing to download or update. Add it to your home screen and it behaves exactly like an app.
Open BikriBook in Chrome, tap the ⋮ menu, then "Add to Home screen".
Open in Safari, tap the Share button, then "Add to Home Screen".
Works in Chrome, Edge, Firefox and Safari. Just bookmark it.