adb<p><span class="h-card" translate="no"><a href="https://polymaths.social/@krafter" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>krafter</span></a></span> Delta Chat is available for iOS, if you mean in general to install a new app well yeah if people don't want to change there is nothing you can do about it, but if you are not available in the platforms they use they will need to use something else</p><p>on the plus side with <a href="https://mastodon.social/tags/DeltaChat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DeltaChat</span></a> there are in-chat mini-apps you could use as a reason for them to install the app, ex. shopping lists with family or roomates, split bills with friends, to-do lists and collaborative editor, games, etc.</p>