HTMLCollection vs SpectralScan Audio Analyzer

Keep the HTML you use close at hand. HTML Collection is a simple way to save, organize, and view HTML source itself—not just bookmark its URL. Store templates, snippets, test pages, HTML-based notes, and other reusable content. Preview saved HTML instantly, edit the source, and update it whenever needed. Key Features • Enter or paste HTML source and import HTML files • Open saved HTML source offline • Edit HTML with optional line wrapping • Organize items with collections, icons, and colors • Search by title or filename • Export as HTML files, PDFs, or full-page images • Open recent HTML from a Home Screen widget • Sync across devices with iCloud • Save and restore previous versions When your devices are signed in to iCloud with the same Apple Account, saved HTML, history, titles, collections, and other organization details stay in sync. History Plus The free version lets you restore and edit the latest history entry. A one-time History Plus purchase unlocks up to 10 history entries, protected versions, and notes for each version. Save, organize, and view HTML comfortably on iPhone and iPad. HTML Collection is your personal library for the HTML you want to keep and reuse. External images, styles, scripts, and other linked resources may require an internet connection.

SpectralScan turns your phone into a professional audio analysis tool. Real-Time Analyzer (RTA) Visualize your acoustic environment live with a high-resolution frequency spectrum. Adjust smoothing, peak hold, and frequency range on the fly. Sine Sweep Measurements Run a precision sine sweep and capture the full frequency response and impulse response of any speaker, room, or audio system. Spectrogram Watch frequency content evolve over time with a scrolling waterfall display. Compare & Export Save multiple measurements, overlay them for comparison, and export as CSV or PNG. Pro features: multiple sweep measurements, fine octave smoothing, peak frequency display, and additional color themes and more coming.