Gridline: Grid & Value Study

Put a grid over any reference photo and check its values on the same screen. Gridline is a drawing grid for painters, illustrators and art students who work from reference photos. Import a picture, set up the grid, switch to grayscale or a notan when you need to judge values, and paint with your iPhone or iPad beside the easel. ■ Free • Import from your photo library, the camera, the Files app, or paste an image • Try it first with a sample: a public-domain Van Gogh is ready on first launch • Square or rectangular cells, with any number of columns and rows • Diagonals, cell labels, line color and line thickness • Grayscale view, a 2-tone notan, and mirror • Save the gridded image to Photos, print it, or share it • Paint mode: the tools disappear, touches are ignored and the screen stays awake, so the device can stand by your easel. Press and hold to leave • Built for iPad too, with the settings in a side panel • Unlimited projects, each one reopening with the settings you left ■ Gridline Pro (one-time purchase) • Notan in 3, 4 or 5 tones: drag the split points on the value scale and simplify the small details • Fit to canvas: crop to A4, 8×10, 9×12, 11×14 or 16×20 in, or square, in portrait or landscape, and see the real cell size in cm or inches • No ads Pro is a single purchase, not a subscription. You can restore it on other devices signed in with the same Apple Account. ■ About ads The free version shows one banner ad at the bottom of the project list. The editor, where you look at your reference, has no ads. ■ Your photos stay on your device Gridline keeps its own copy of each reference inside the app. There is no account or sign-up, and your images are never uploaded. Nothing leaves the device unless you save, print or share it.