What is the best alternative to Sun position and path on iPhone?

Sun Seeker - Sunlight Tracker, S tier, #1 in sun tracking.

Is there a free alternative to Sun position and path?

Yes: Sunrise Sunset Time SolarWatch (A tier, #2) is free to download.

Yes. 3 apps rank above it in sun tracking: Sun Seeker - Sunlight Tracker (#1), Sunrise Sunset Time SolarWatch (#2), Lumos: Sun and Moon Tracker (#3).

Sun position and path is A tier, #4 of 6 in sun tracking. Here is everything that competes with it on iPhone, in tier order.

1
Sun Seeker - Sunlight TrackerShigher tier
$11.99 · ★ 4.8 · 12,963 ratings · score 91
Sun Seeker is a solar tracking and compass app showing sun position, sun path, sunrise and sunset times, and twilight.
2
Sunrise Sunset Time SolarWatchA
Free download · ★ 4.7 · 6,051 ratings · score 90
Shows sunrise, sunset and twilight times, with customizable solar alarms, AR mode and map overlays for photo planning.
3
Lumos: Sun and Moon TrackerA
Free + IAP · ★ 4.7 · 3,721 ratings · score 89
Predicts sun and moon positions and rise/set times for any time and place, using AR, maps, and a calendar.
5
Helios - Sun & Moon TrackerA
Free + IAP · ★ 4.8 · 1,837 ratings · score 83
Sun and moon tracker showing sunrise, sunset, golden hour and blue hour times, with map and AR camera views.
6
LumyB
$7.99 · ★ 4.8 · 2,410 ratings · score 79
Sun and moon tracker and outdoor activity planner showing sunrise, sunset, golden hour and moon phases.

What is the best alternative to Sun position and path on iPhone?: Sun Seeker - Sunlight Tracker, S tier, #1 in sun tracking.
Is there a free alternative to Sun position and path?: Yes: Sunrise Sunset Time SolarWatch (A tier, #2) is free to download.
Does anything rank above Sun position and path?: Yes. 3 apps rank above it in sun tracking: Sun Seeker - Sunlight Tracker (#1), Sunrise Sunset Time SolarWatch (#2), Lumos: Sun and Moon Tracker (#3).