Convertify Pro vs DataStamp

Convertify Pro — All-in-One Media Converter Convert, compress, trim, merge, and edit your videos, audio files, and images — all in one app. Supports 28+ media formats with 24 powerful tools. No internet required, everything runs locally on your device. VIDEO TOOLS (9 tools) • Convert — MP4, MOV, AVI, MKV, WEBM (H.264, H.265, VP9) • Compress — Reduce file size while keeping quality • Trim — Cut video to the exact length you need • Merge — Combine multiple videos into one • Change Resolution — Scale to 4K, 1080p, 720p, or custom size • Change Speed — Slow motion (0.25x) to fast forward (4x) • Rotate — Rotate or flip video orientation • Mute — Remove audio from video • Extract Audio — Save audio track as MP3, AAC, WAV, FLAC, M4A AUDIO TOOLS (7 tools) • Convert — MP3, WAV, M4A, FLAC, OGG, AAC, and more • Create Ringtone — Make ringtones in MP3, M4R, OGG • Merge — Combine multiple audio files • Adjust Volume — Increase or decrease audio volume • Change Bitrate — Optimize audio quality and file size • Change Sample Rate — 44.1 kHz, 48 kHz, and more • Change Channel — Switch between stereo and mono IMAGE TOOLS (8 tools) • Convert — JPG, PNG, WEBP, BMP, GIF, TIFF • Compress — Reduce image file size • Resize — Change image dimensions • Crop — Crop to exact area • Rotate — Rotate or flip images • HEIC to JPG/PNG — Convert iPhone photos easily • Images to PDF — Combine images into a PDF • PDF to Images — Extract images from PDF WHY CONVERTIFY PRO? • 100% offline — No upload, no cloud, your files stay on your device • Background processing — Continue using your phone while converting • Notification on completion — Get notified when conversion finishes • 13 languages supported — English, Japanese, Vietnamese, Chinese, Korean, Spanish, French, German, Portuguese, Hindi, Arabic, Thai, Indonesian • Clean, modern interface — Easy to use for everyone Powered by FFmpeg (GPL). All processing is done locally on your device — your files are never uploaded anywhere. Download Convertify Pro now and handle all your media conversion needs in one app!

DataStamp is a local-first proof vault for creating verifiable timestamps for text, photos, screenshots, receipts, contracts, and files. The app computes a SHA-256 hash on your device, requests an OpenTimestamps proof, and lets you keep a portable record that can later be verified against Bitcoin anchoring. Your original content stays under your control; the proof is based on the hash, not on uploading the private document itself. What DataStamp does: • Create timestamp proofs for text, images, and files • Verify existing OpenTimestamps (.ots) proofs • Track pending and confirmed proofs • Organize evidence with folders and tags • Export/share proof material when needed • Use widgets and background checks for pending confirmations • Optionally sync your own records through your private iCloud account DataStamp is designed for people who want defensible records without depending on a central account, proprietary server, or mutable database. It is useful for preserving proof of existence for notes, creative drafts, legal or financial records, screenshots, business documents, research artifacts, and other digital evidence. OpenTimestamps is an open protocol for timestamping data with Bitcoin. DataStamp provides a polished iOS workflow around that protocol while keeping the app local-first and privacy-conscious.