Dr
Pretty accurate app, gives you an idea of what might be the problem. Not very good English translation though, but that can improve in the future.
Not enough ratings yet to assess Doctor31.
Doctor31 - Symptom Checker appears legitimate, with a few gaps. AppsHunter Legitimacy Score for Doctor31 is 73/100.
Based on 73 of 100 points across 7 verification signals from App Store and developer data.