What is the best alternative to 23andMe - DNA Testing on iPhone?

Ancestry: Family History & DNA, S tier, #1 in genealogy.

Is there a free alternative to 23andMe - DNA Testing?

Yes: Ancestry: Family History & DNA (S tier, #1) is free to download, with in-app purchases.

Yes. 3 apps rank above it in genealogy: Ancestry: Family History & DNA (#1), FamilySearch Tree (#2), MyHeritage: Family Tree & DNA (#3).

23andMe - DNA Testing is S tier, #4 of 6 in genealogy. Here is everything that competes with it on iPhone, in tier order.

1
Ancestry: Family History & DNAS
Free + IAP · ★ 4.8 · 655,317 ratings · score 98
Free genealogy app for building a family tree, searching records, uploading family photos, and viewing AncestryDNA.
2
FamilySearch TreeS
Free · ★ 4.8 · 504,737 ratings · score 98
Build a shared family tree, add photos, stories and audio recordings, and link ancestors to FamilySearch historical.
3
MyHeritage: Family Tree & DNAS
Free download · ★ 4.9 · 66,375 ratings · score 97
Builds family trees, searches historical records, shows DNA ethnicity results, and animates photos with AI.
5
Family Tree PhotoA
Free download · ★ 4.7 · 2,359 ratings · score 88
Draws a family tree from members you add, including ancestors, descendants, aunts, uncles and step siblings.
6
Family Tree*A
Free + IAP · ★ 4.6 · 7,127 ratings · score 86
Genealogy app for building an interactive family tree, storing family memories and running evidence-based research.

What is the best alternative to 23andMe - DNA Testing on iPhone?: Ancestry: Family History & DNA, S tier, #1 in genealogy.
Is there a free alternative to 23andMe - DNA Testing?: Yes: Ancestry: Family History & DNA (S tier, #1) is free to download, with in-app purchases.
Does anything rank above 23andMe - DNA Testing?: Yes. 3 apps rank above it in genealogy: Ancestry: Family History & DNA (#1), FamilySearch Tree (#2), MyHeritage: Family Tree & DNA (#3).