@sourcetoad/react-native-sketch-canvas/src/specs/NativeSketchCanvasModule.ts

react-native-sketch-canvas allows you to draw / sketch on both iOS and Android devices and sync the drawing data between users. Of course you can save as image.

import type { TurboModule } from 'react-native';
import { TurboModuleRegistry } from 'react-native';

export interface Spec extends TurboModule {
  getConstants: () => {
    MainBundlePath: string;
    NSDocumentDirectory: string;
    NSLibraryDirectory: string;
    NSCachesDirectory: string;
  };
}

export default TurboModuleRegistry.getEnforcing<Spec>('SketchCanvasModule');