Poriangle vs Lumisan

There's a technique called Delaunay triangulation used in computational geometry. While it has plenty of practical applications, let's skip the technical stuff—filling shapes with triangles just looks cool. Poriangle is a shape editor that lets you draw any shape and fill it with Delaunay-style triangles. Draw, experiment, and have fun creating your own designs.

Turn photos and illustrations into something that glows. Lumisan reads the brightness, edges, and saturation in your image to find where the light should live — then blends in a soft glow, sparkling patterns, or holographic color shifts. From a subtle highlight to a full holographic wash, it's built for real photos and artwork, not just neon stickers. Everything is processed on your device. Nothing is ever uploaded. Five simple steps get you there: Style → Area → Light → Finish → Save. STYLE – 30 ready-made presets, one tap away – Save your favorite settings as a My Style and reuse them on any image AREA — CHOOSE WHERE IT GLOWS – Auto-detect highlights, edges, and saturation – Pick a color with the eyedropper and glow only that color (up to 4 colors) – Invert the selection to glow everything except what you picked LIGHT – Adjust glow amount, spread, and color to taste – 64 pro-level parameters covering spread width, core sharpness, light rays, and background darkening – Full custom glow color PATTERNS – Prism — rainbow light bending through your image – Holo & Glitter — rainbow, ice, lattice, sparkle, and stardust, in hearts, stars, and more – Halftone — dots, lines, and grids for a printed-poster look FINISH – Frames: none, even border, instant-photo style, or circle – Paper textures: plain, aged, or canvas – Add a signature in 5 fonts EDIT WITH CONFIDENCE – Undo/redo up to 64 steps – Auto-saves your progress — pick up right where you left off – Import directly from any app's share sheet EXPORT – Original, 2048, 1440, 1080, or custom size – Re-rendered at your chosen resolution, so fine patterns and glitter never get crushed – Save straight to Photos or share anywhere Great for: – Eye-catching posts for Instagram and TikTok – Turning fan art or portraits into something special – Giving photos a poster or zine-style finish Every preset and the full editing/saving flow are free to try. Lumisan PRO (a one-time purchase — no subscription) unlocks all 64 detail parameters, full custom glow colors, colors 2–4 for masking, signatures, My Styles, and your last 30 edits.