Pitch Please is a roof pitch measurement and photo documentation app for iPhone and Android, published by GDK Digital LLC. It reads a phone’s inclination using its motion sensors and displays roof slope in either Imperial X:12 pitch with degrees or International percent slope with degrees. Users can select the display system in Settings and calibrate the app using its built-in controls and help instructions. The app offers two reading modes. In Direct Mode, the user places the phone on the roof slope, holding it in landscape orientation with its long edge aligned with the roof’s fall. The app reads the phone’s sensor angle and can save a screenshot. In Camera Mode, the sensor reading appears beside a fixed guide in the live camera view, allowing the user to align the guide with a visible roof profile and document the scene. Camera Mode does not calculate roof geometry from the image, and perspective, phone orientation, placement, and contact surface can affect readings. Captures are stored in the on-device Saved Pictures archive before export. Users can add movable, resizable labels for an address, job number, or notes, customize label text and background colors, and save annotated copies without changing the original. With photo permission, a copy can also be saved to the device’s photo library. The app is intended for field reference and job documentation; measurements used for material orders, estimates, code, engineering, or safety decisions should be verified with an appropriate method and instruments. Pitch Please is distributed through the Apple App Store and Google Play and is listed as a one-time purchase with no subscription or in-app purchases; current pricing and device compatibility are determined by the store listings.