HTMLViewer Pro+ vs HAMSignal

Offline HTML viewer and source-code reader with syntax highlighting. Open, inspect and edit any .html file on iPhone – even without an internet connection. KEY FEATURES - Instant import from Files, URL or manual input - 100% WebKit rendering (CSS3, ES6, SVG, Canvas) - Source view with coloured HTML, CSS and JS - Dark Mode for comfortable late-night reading - Smart file manager: folders, favourites, fast search - Privacy first: no ads, no analytics, all on-device USE CASES • Developers reviewing prototypes • Students learning web basics • Testers checking responsive layouts offline • Writers drafting blog posts in raw HTML • Anyone opening .html email attachments ROADMAP Upcoming 1.1 will add split-view preview, auto-refresh and local web-server mode.

Know when a band opens from where you are. HAMSignal watches live NOAA solar data and tells you when HF conditions improve at your QTH — not just when a storm hits. Set your callsign and grid once, and your phone (or Apple Watch) buzzes when 10m, 15m, or 20m opens. BAND-OPENING ALERTS • Push notification when a band opens from your grid square, day or night • Based on live SFI, K-index, and A-index, with a day/night model per band • Especially useful on 10m for Technician licensees, and more valuable as Solar Cycle 25 declines and openings get rarer LIVE CONDITIONS • All HF bands rated open, fair, or closed for day and night at your location • SFI, K-index, A-index, X-ray flux, and solar wind from NOAA SWPC • 27-day NOAA forecast and historical trends • Grey line / terminator map with your local sunrise and sunset • Point-to-point path predictor with MUF/LUF and best band WHAT CAN I WORK RIGHT NOW? (US) • Pick your license class and see which bands are open AND legal for you, with exact frequencies, modes and power limits • Built for new Technicians: see that 10m is open and exactly where you can use SSB, CW and FT8 • Based on the current FCC rules, with the rule cited on each row AM I BEING HEARD? • See which stations received your signal in the last hour, by band and mode, with signal reports and distance • Uses public PSK Reporter reports for your callsign (FT8, FT4, WSPR, JS8, CW skimmers) OPERATE • DX cluster spots and PSK Reporter activity • POTA self-spotting that queues offline and sends when you get signal, plus an SMS fallback • POTA and SOTA park and summit lookup • Amateur satellite passes (ISS, SO-50, RS-44, IO-117, and more) with correct up/down frequencies • APRS stations near you and nearby repeaters • Offline QSO logbook with ADIF import POCKET TOOLS • Maidenhead converter, distance and bearing, UTC clock • Antenna length, coax loss, stub matching, Yagi designer, power/dB • Band plan, Q-codes, phonetics, Morse reference APPLE WATCH • Glanceable K-index, SFI, and best band • Complications for your watch face HAMSIGNAL PRO (one-time purchase, no subscription) • Unlimited band-opening alert rules (free includes one) • DX spot alerts and sked alerts • Contest Mode dashboard • ADIF and Cabrillo export, Field Day auto-export • DXCC and WAS award tracking Already bought HAMSignal? You have Pro automatically. Tap Restore in Settings if it doesn't show. No account. No ads. No subscription. Your log stays on your device. Requires iOS 17 or later. Apple Watch app requires watchOS 10 or later.