Questions, bug reports and feature requests for the iOS, Android and web apps go to the public support tracker:
You need a GitHub account to post. Issues are public, so never paste an API key, and leave out anything you would not want others to read.
Some results are missing, or an index shows an error. Each of the six indexes can be slow or rate-limited on its own; Semantic Scholar answers HTTP 429 when its shared keyless limit is busy. A failing index never fails the search. Retry, or add a free Semantic Scholar key in Settings.
Summaries are extracted, not written by Claude. The phone apps extract summaries on the device by default. To use Claude, add your own Anthropic API key in Settings and choose Claude; the app asks before every search that would call it.
A summary says it read only the abstract. Deep read reaches open-access full text from Europe PMC only. Papers available only as PDFs are summarised from their abstracts.