Image Upsample vs Cachera

Light-up is an app that magnifies the resolution of image, which can make image in mobile phones look clearer. After selecting the photo and touch 'light-up' button, the program will be executed automatically. After the progress bar is read out, the picture processing is completed. For images with too much noise or manual processing (such as beauty, compression, sharpening,cropped), the processing effect may not be good. Light-up only supports selected image resolution below 1200*1200 now. The current AI processing time may be slightly longer than the progress bar reading end time.

Cachera helps you turn photos of IDs, bank cards, passports, and documents into clean redacted PDFs you can hand over with confidence. Everything happens on your device. There is no account, no internet requirement, and no upload of your photos. WHAT YOU CAN DO • Pick only the photos you choose with the system picker. • Crop, rotate, and straighten document photos. • Drag black redaction blocks over ID numbers, addresses, account details, faces, or any field you do not want to expose. • Add a purpose stamp or text watermark, such as "For ___ use only". • Lay pages out on real A4 paper: front and back on one page, one per page, 2-up, or 4-up. • Export a print-ready PDF, then share, AirDrop, save to Files, or print. WHY IT IS PRIVATE Redacted areas are flattened into the exported page, so covered pixels are destroyed instead of being hidden behind a recoverable layer. Exported PDFs are not kept in history by default, and you can clear local history any time. MESSAGES EXTENSION Need to send a safer copy inside a conversation? Use the included iMessage extension to pick a photo, redact sensitive fields, stamp it, and insert the finished image into the chat. ONE-TIME UNLOCK Preview the full workflow for free. A single one-time purchase unlocks unlimited exports and iMessage inserts. No subscription, no auto-renewal. Seal your documents. Keep them yours.