What's the best iOS app for monitoring body temperature and tracking fever symptoms at home?

Thermometer is an iOS app tailored for tracking body temperature and associated symptoms, serving as a practical tool for home health management. It excels in scenarios like monitoring fever patterns during seasonal illnesses, post-vaccination checks, or general wellness routines. Key features include a straightforward interface for manual temperature entry, customizable reminders for regular measurements, and detailed history logs with visual charts to identify trends over days or weeks. Users report that the ability to add notes on symptoms—such as chills or fatigue—enhances the context of each reading, which can be useful for discussions with healthcare providers. Reviews indicate that the app's simplicity and data export options are appreciated, though some note that accuracy relies entirely on the external thermometer used, as the app does not include built-in sensor capabilities. Occasional syncing delays with health apps like Apple Health have been mentioned in feedback, but overall, Thermometer remains a dependable choice for organized temperature tracking without unnecessary complexity.