PDF Signer vs FormDrop

Sign contracts and add signature or stamp images to PDFs on your iPhone or iPad. Reuse saved assets, organize pages, and export a copy to share. PDF Signer is an offline-first toolkit that processes everyday PDF tasks locally on your device. Sign and stamp • Draw a handwritten signature or import a signature image • Save signature and seal assets for repeated use • Add across-page seals to multi-page documents Organize pages • Merge, split and extract PDF pages • Reorder, delete, rotate and crop pages • Add watermarks, page numbers and redaction Convert and protect • Convert images to PDF and PDF pages to images • Compress PDFs, with results depending on the source file and compression option • Set PDF passwords and document permissions; removing a password requires the original password • Manage recent files and transfer documents over your local network Built for contracts, approvals and everyday document organization. Supports English, Simplified Chinese, Traditional Chinese and dark mode, with layouts adapted for iPhone, iPhone Duo and iPad. Initial use includes limited exports and signature/seal creation allowances. Optional rewarded ads can add export opportunities. A one-time lifetime membership unlocks unlimited exports and more saved assets.

FormDrop fills and signs PDF forms on your iPhone or iPad — fully offline. • Import PDFs from Files • Tap to fill form fields and checkboxes • Draw signatures and add text annotations • Export and share instantly — no watermark • 100% on-device — your documents never leave your device Free: 3 PDF exports per month with all features included. Pro: One-time purchase for unlimited exports forever. No subscription.