Two one-tap Apple Photos app tools used as a starting point before manual slider edits:
Found under Filters; converts a photo to black and white to remove color as a distraction, drawing more viewer attention to the photo's details. Applied as a judgment call — used when a given photo looks better without color — and applied before the manual detail sliders.
A single tap that adjusts all the editing sliders (Sharpness, Definition, Noise Reduction, Vignette, exposure, etc.) at once to produce a more visually impactful baseline version of the photo. Used as a quick starting point, then followed by manual fine-tuning of individual sliders — see iPhone Photos App Sharpness vs Definition (Micro-Contrast Editing) and Noise Reduction via Light-Information Density (iPhone Photos App) — rather than as a final, standalone edit.
Mono filter (if applicable) → Auto tool (baseline) → manual slider tuning (Sharpness, Definition, Noise Reduction, Vignette).