What is the best alternative to HealthAssistance on iPhone?

Ada - your health portal, S tier, #1 in symptom checking.

Is there a free alternative to HealthAssistance?

Yes: Ada - your health portal (S tier, #1) is free, with no in-app purchases.

Yes. 5 apps rank above it in symptom checking: Ada - your health portal (#1), WebMD: Symptom Checker (#2), Kinsa (#3) and more.

HealthAssistance is F tier, #6 of the 6 tiered apps in symptom checking. Here is everything that competes with it on iPhone, in tier order.

1
Ada - your health portalShigher tier
Free download · ★ 4.8 · 62,430 ratings · score 96
Free app that gives access to Ada Assess, a symptom assessment listing possible causes and guidance on level of care.
2
WebMD: Symptom CheckerShigher tier
Free download · ★ 4.7 · 149,537 ratings · score 93
Checks symptoms, sets medication reminders, screens drug combinations, finds doctors and compares prescription prices.
3
KinsaAhigher tier
Free download · ★ 4.8 · 46,079 ratings · score 86
Tracks family temperatures, symptoms and medication, with age-specific fever and symptom guidance.
4
Dockti - Med. Symptom CheckF
Free + IAP · ★ 3.1 · 30 ratings · score 49
Stores personal medical files and family profiles, and suggests possible diseases from entered symptoms.
5
Buddydoc: Pet Symptom CheckerF
Free download · ★ 5.0 · 3 ratings · score 47
Free dog and cat symptom checker that gives risk levels, general advice and possible diagnoses for 150+ symptoms.

What is the best alternative to HealthAssistance on iPhone?: Ada - your health portal, S tier, #1 in symptom checking.
Is there a free alternative to HealthAssistance?: Yes: Ada - your health portal (S tier, #1) is free, with no in-app purchases.
Does anything rank above HealthAssistance?: Yes. 5 apps rank above it in symptom checking: Ada - your health portal (#1), WebMD: Symptom Checker (#2), Kinsa (#3) and more.