Prismturn Lenticular Prints

Prepare a physical lenticular flip print with ordered images, a lens pitch test and files at a known print size. Prismturn is an offline print bench for Android phones and tablets. ARRANGE YOUR VIEWS Import 2–8 still PNG or JPEG images. Reorder frames, choose fill or fit, adjust zoom and position, and scrub manually between source views. Imports become oriented sRGB PNG working copies with a maximum 1600-pixel edge. Original full-resolution files and original metadata are not retained. SET THE PRINT GEOMETRY Choose dimensions, printer DPI, effective lens pitch (LPI), vertical or horizontal stripes, phase and forward/reverse frame order. The interlaced proof shows actual digital stripes; it does not simulate the optical effect of a physical lens. Fractional lens pitch accumulates across the entire output. TEST THE PHYSICAL LENS Create a separate pitch-test PDF before adding pictures. It includes up to nine labeled bands, a roughly 100 mm raster span and a separate exact 100 mm ruler. Print at 100% with fitting and enlargement disabled, check the ruler, compare the bands under your lens, then apply your chosen pitch. The immutable test plan and manual choice stay with the project. Save reusable lens presets. TAKE REAL FILES TO PRINT Create an interlaced PNG with DPI metadata, an actual-size print PDF with crop marks, a pitch-test PDF, settings and pitch-band CSVs, a source-bearing editable JSON backup, checksum manifest and ZIP package. Preview PDFs and use Android system Save or Share for each file. Saved output sets are independent snapshots that survive later project edits or deletion. KEEP EDITABLE WORK Local print library with rename, notes, duplicate and confirmed deletion. Import Prismturn version 1 backups as separate restored projects, including normalized source images, order, crop, settings and lens-test choice. Malformed or incompatible backups are rejected without replacing existing projects. The wide tablet workspace places the print beside its setup inspector. PRINTING SCOPE A suitable printer and physical lenticular lens are separately required. Print PDFs at 100% and disable fit, shrink and borderless enlargement. Driver behavior, scaling, lens pitch, material, alignment and viewing angle affect the final effect. Verify the paper dimensions and physically test the lens. No automatic lens calibration, inferred 3D depth, optical simulation, printer control, camera capture, animation or video. LIMITS Still PNG/JPEG imports up to 20 MB and 100 megapixels, normalized to at most 1600 pixels per edge. Requested print edges 20–150 mm. DPI 300, 600, 720 or 1200; lens pitch 10–150 LPI. Output at most 4096 pixels per edge and 12 megapixels; each frame needs at least one pixel per lens. Actual millimeter size reflects pixel rounding. Up to 100 projects, 30 presets, 32 MB combined working sources per project and 256 MB total working sources. Up to 20 saved output sets and 1 GB saved output. Backup import up to 48 MB. Paid once. No ads, subscription, in-app purchases, app account, analytics or network permission. Processing is local. Save and Share send only the files you choose to your chosen provider or app. Android automatic app backup is disabled; save important backups outside the app before uninstalling. Screenshots use the optional original Day/Night example artwork.

Initial Android release: ordered image and crop workspace, fractional-pitch interlacing, physical-scale print PDF, independent lens tests, local projects/presets and restorable source-bearing print packages.