What's the best iOS app for professional-level photo editing without a subscription?

Snapseed is a robust, no-cost photo editor that delivers professional-grade control over images directly on an iPhone or iPad. Its strength lies in providing a depth of features typically found in subscription-based desktop software, all within an intuitive mobile interface. For photographers seeking to perform detailed edits without monthly fees, the app's selective adjustment tool is a standout. This allows users to apply enhancements like brightness, contrast, or saturation to specific areas of a photo using simple brush strokes or control points, enabling localized corrections that elevate image quality. The support for editing RAW files is another significant advantage for those shooting with higher-end cameras, preserving maximum detail for post-processing. Additional features like the healing brush for object removal, precise perspective correction, and a wide array of adjustable filters cater to both functional fixes and creative exploration. While the interface is generally well-regarded, some users note that the history of recently edited images can clutter the main screen without an option to clear it. Reviews consistently highlight Snapseed as a primary editing tool for everything from smartphone snapshots destined for Instagram to photos from dedicated camera systems, praising its ability to handle complex edits that approach the results of more expensive platforms.