Marginal Gains Inc. Releases Suihei for Mac Photo Leveling App

OSAKA, JAPAN, October 14, 2026 /CourierPR/ -- Marginal Gains Inc., an Osaka-based software company founded in 2024 by Mitsuhiro Inomata, has introduced Suihei, a macOS application designed to streamline the process of leveling photos in a post-production workflow. The app, available for free download from the Mac App Store, offers a unique feature by estimating and applying the tilt of each individual photo, ensuring that no photo is left uncorrected.

Suihei's approach to photo correction is meticulous and precise. Unlike traditional methods that apply a single correction to an entire batch of photos, Suihei evaluates the angle of each image separately. This ensures that every photo is corrected according to its own angle, leaving no blank corners and maintaining the integrity of the original composition. The app's interface is available in 33 languages, making it accessible to photographers worldwide.

The workflow of Suihei is designed to be efficient and user-friendly. Once a set of photos is imported, the app estimates the tilt of each image and applies the correction to the entire set in one step. This process is completed on the photographer's own Mac, ensuring that the original source files remain untouched. The app also includes a built-in AI that generates live previews of the corrections, allowing the photographer to accept or reject them as needed.

For photographers who deliver large sets of photos, Suihei offers a significant time-saving advantage. The app can process a set of photos in a matter of minutes, compared to the manual effort required to correct each photo individually. Additionally, Suihei's cropping feature ensures that every photo is trimmed to the largest rectangle possible, eliminating any empty wedges that might otherwise appear at the edges.

Suihei's pricing model is straightforward. The first 100 exported photos are free, and after that, 10 more are free every day. There is no subscription, and a one-time purchase of US$39.99 removes the export limit for good. The app supports JPEG, HEIC, and PNG files, making it versatile for various types of photo projects.

The app has been shaped by the real-world experience of professional photographers, ensuring that it meets the needs of those who work with large sets of photos. Marginal Gains Inc. is located at 10F, Taiga Bldg., 3-6-2 Bingo-cho, Chuo-ku, Osaka 541-0051, Japan.