visual storage vs SSTV Lite

visual storage scans any QR code (version 1 to version 40) and saves the data payload contained in the QR code as a file on your iPhone. With modern compression technology, photos and even short videos can be stored directly on QR codes. As such, this app works as a form of visual file delivery without an internet connection. If the file is ≤2,953 bytes, it can be stored on a QR code, and it can be scanned by visual storage. Such files can include, but are not limited to: JPEG - .jpg PNG - .png GIF -.gif JPEG XL - .jxl AVIF - .avif HEIC - .heic MP4 video - .mp4 MOV video - .mov AV1 IVF - .ivf VVC video - .vvc WAV - .wav MP3 - .mp3 FLAC - .flac Ogg - .ogg Lyra audio bitstream - .lyra Codec2 audio bitstream - .codec2 ZIP - .zip PDF - .pdf and more. visual storage can be used without an internet connection once downloaded.

A free reception is used only after a complete image is saved. Failed or partial receptions do not count. Built-in practice is unlimited. Existing free users receive three new successful receptions once. A one-time purchase unlocks unlimited receiving plus SSDV, ETSI Digital Radio Mondiale (radio broadcast standard), callsign overlays, FSK/CW IDs, templates and automated transmit. Saving a station callsign remains free. Free sharing includes the App Store badge and QR link. Permanent Full Unlock enables original-image sharing and optional download branding. Decode SSTV and Weather Fax signals into images, receive ISS SSTV transmissions, or turn your own pictures into transmit-ready audio. Receive live signals through the microphone or decode supported audio files. SSTV monitors the spectrum, adjusts frequency and slant, and lets you keep useful partial decodes when a transmission ends early. Prepare and transmit images in a broad range of Martin, Scottie, Robot, PD, Pasokon, monochrome, FAX and AVT modes. Save decoded images and generated WAV files in clear RX/TX archives. Built for iPhone, iPad and Mac: • Guided Simple and Advanced modes • Station profile and QSO logbook • Private iCloud sync across devices and editions • Professional Signal Desk with live spectrum • On-device decoding and encoding • Automatic frequency and slant correction • Partial-image saving for useful incomplete decodes • Mode guide with timing and resolution details • Receive and transmit history • Doppler-aware satellite tracking, pass reminders and provider-aware tuning • SSDV and advanced digital image reception, callsign overlays, FSK/CW IDs, templates and automation • Portrait and landscape layouts • Localized interface in 12 languages Share received images as cards with saved reception details and optional callsign and grid locator. For amateur-radio operators, satellite listeners and anyone curious about pictures carried by sound. Link received FSK callsigns to image history, share cards and QSO drafts. Compare and correct images after reception while preserving the original. Re-decode retained audio when available. Explore historical satellite and space-station receptions. Play original recordings and clearly labeled synthetic practice audio through the receiver. Historical practice is free and does not use your reception allowance.