Value Study vs Preview mini

In art, value (or tone) refers to how light or dark a colour is. If you're learning to paint or draw, doing value studies is one of the best ways to improve. These small, loose sketches in greyscale help you understand where shadows fall and highlights appear—essential for capturing depth and form. Value Study is a simple, focused tool designed to help you see values more clearly in your reference images. Instead of just converting a photo to black and white, this app lets you break down tones step by step. Start with just black and white to map out the biggest shapes, then gradually add more values to refine your understanding. You can also highlight all areas of an image that share the same value, making it easier to see subtle shifts in tone. This is especially useful in complex references, like portraits, where different parts of the image might have the same level of shadow but look completely different in colour. Value Study isn’t here to replace traditional studies—it’s here to enhance them. Whether you're sketching, painting, or working digitally, this tool makes it easier to focus on the fundamentals of light, shadow, and form. Try it for free with all features enabled on sample images from Unsplash before deciding to unlock the full app with a low-cost yearly or lifetime purchase. All Value Study Pro upgrades count as lifetime purchase. Either option will unlock Value Study across iPhone, iPad and Mac. Annual: Auto-renews yearly. Lifetime: One-time payment, no fees. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Preview mini is a powerful tool for working with images and PDFs on iPhone and iPad. Inspired by macOS. Created for iOS.  Preview mini combines the convenience of editing images and PDFs into a single application, offering advanced features for viewing, annotating, and converting files. The macOS-inspired desktop experience, featuring the brand-new File Desktop, familiar window controls, drag and drop, keyboard interaction, and even more to fall in love with. IMAGE EDITING – Highlight and crop image fragments – Rotate, flip, and resize – Add text, notes, and shapes – Support for blank templates with resolution selection PDF HANDLING – Edit and annotate PDF documents – Highlight text and create custom annotations* – Duplicate, convert, and manage PDF pages* – Add and remove passwords to protect files* IMPORT, EXPORT, AND INTEGRATION – Export images in HD quality* – Export JPEG/PNG with file size preview* – Support for keyboard shortcuts and trackpad for convenient use* *Features available in the full version of the application. Using Preview mini significantly simplifies the processing of images and PDF documents. You can quickly edit files, highlight important details, fill out forms, and add signatures without the need to switch between different applications. This saves you time, increases productivity, and makes working with documents convenient and intuitive! Download Preview mini and manage images and PDFs with macOS convenience on your iPhone and iPad! ––– Legal notice This application is NOT an Apple product. Preview mini is an independent development, inspired by macOS but not affiliated with Apple Inc. Images in the screenshots are provided by artists: Pok Rie (https://www.pexels.com/de-de/@pok-rie-33563) Fabian Wiktor (https://www.pexels.com/de-de/@fabianwiktor)