PhosphorCW vs Offline Internet

PhosphorCW — Morse Code Decoder Decode CW (Morse code) signals in real time using your iPhone or iPad's microphone. PhosphorCW listens to radio audio and prints decoded text on screen with the warm glow of a vintage phosphor terminal. REAL-TIME DECODING Point your device at a radio speaker or feed audio via a line-in adapter. PhosphorCW's DSP engine continuously processes the audio stream, detecting CW tones and decoding them into readable text as they arrive. Characters appear on a teleprinter-style display that scrolls automatically, just like the machines that once clattered in radio rooms and newsrooms worldwide. AUTOMATIC SIGNAL TRACKING • Auto Frequency (AFC) — Automatically finds and locks onto the CW sidetone using FFT peak detection. No need to know the exact tone frequency. The tracker adapts as conditions change. • Auto Speed — Measures dit and dah timing to determine sending speed in words per minute. Adapts continuously from around 5 to 60 WPM as the operator's speed varies. Both can be switched to manual mode for fixed-frequency or fixed-speed operation. ON-DEVICE DSP ENGINE All signal processing happens locally on your device. Nothing is recorded, transmitted, or stored externally. The decoding pipeline includes: Bandpass filtering centred on the detected tone frequency Goertzel-based tone detection with adaptive noise floor tracking Envelope extraction with slow-decay peak tracking for reliable squelch Adaptive timing estimation for dit/dah discrimination and character/word gap detection Full ITU Morse code table including prosigns SIGNAL ANALYSIS A dedicated signal view provides: Live FFT spectrum display showing the audio frequency content Scrolling waterfall display for visualising signal activity over time Tone level indicator Real-time WPM, tone frequency, and SNR readout Lock status indicator showing when AFC has acquired a signal DISPLAY Choose from multiple phosphor colour themes — green, amber, white, and blue — inspired by the CRT terminals of the Cold War era. Adjustable decoder font size. Text selection enabled for copying decoded output. SESSION LOG Each decoding session is automatically logged with timestamp, duration, character count, WPM, and tone frequency. Review past sessions and their decoded text at any time. CONFIGURATION Input gain control (0.1x to 20x) Auto/manual frequency detection (300–1500 Hz range) Auto/manual speed tracking (5–60 WPM) Colour theme selection Font size adjustment USE CASES Monitor amateur radio CW transmissions Practice copying Morse code from on-air signals Decode CW practice recordings and training files Analyse CW signal characteristics Learn Morse code by watching the decoder work ABOUT CW Continuous Wave — the original digital mode. Samuel Morse's code has been the universal language of radio since the 1840s. From clipper ships to Cold War submarines, from Bletchley Park to amateur radio contests, CW remains the most efficient and reliable communications mode ever devised. This app decodes it from your microphone or line input. Requires microphone access for audio input. iOS 18.0 or later.

Offline Internet turns your phone into a searchable knowledge space — even when you have no network connection. You can look up information, read explanations, explore topics and discover answers anytime, anywhere — in flight mode, remote areas, classrooms, travel, or limited-data environments. No account. No tracking. No history collection. 1) How it works: When you open the app, your device prepares the local knowledge system (takes a few seconds on first launch). After that, simply type your question in the center search bar — just like using a familiar search engine. Offline Internet shows results in a clean browser-style layout: • Direct answer to your query • Related questions and explanations • Expandable detailed articles You can open any result to read a full explanation and continue generating more information on the same topic. 2) Two search modes: a) Offline Mode (No Internet Required) - Even without Wi-Fi or mobile data you can: • Ask questions • Read explanations • Explore topics • Learn new concepts • Continue expanding an article You can also download additional open knowledge datasets - currently available: Wikipedia (6.3M+ articles), more datasets will be added in future updates. Which is perfect for: • Travel • Students • Remote locations • Flights • Limited data plans • Emergency situations b) Online Private Mode (With Internet) - When connected to the internet, Offline Internet enhances your search: • Retrieves real web results • Adds them alongside your explanations • Opens websites inside the app Web pages are opened through a private search provider so your searches are not stored or profiled. You can also browse sites using an anonymous view inside the built-in web viewer. 3) Article reading: Tap any result to open a detailed explanation page. You can: • Read a full article • Continue expanding the topic • Generate more information • Explore deeper context A “Fetch More” button also provides additional related topics and explanations. 4) Privacy first: Offline Internet is designed for people who value privacy. • No login required • No personal data collection • No search history tracking • No account creation • No profiling Your searches stay on your device. 5) Interface: Light and dark theme toggle, clean minimal design, browser-style experience, and fast navigation. Why Offline Internet? Because knowledge should not depend on signal bars. Whether you are traveling, studying, conserving data, or simply want private browsing — Offline Internet gives you access to information anytime. Important Disclaimers: Medical: This app is a general-purpose AI search tool and is not intended to provide medical diagnoses, treatment advice, or professional medical guidance. Always consult a qualified healthcare professional before making any medical decisions. Do not rely on this app in place of professional medical care. Legal: The information provided by this app does not constitute legal advice. Always consult a qualified legal professional before making any legal decisions. Financial: The information provided by this app does not constitute financial or investment advice. Always consult a qualified financial advisor before making any financial decisions. General AI Disclaimer: This app uses an on-device AI language model to generate responses. AI-generated answers may be incomplete, inaccurate, or outdated. Always verify important information from authoritative and professional sources. The app developer is not responsible for any decisions made based on AI-generated content. Web Browser: The built-in browser provides access to external websites. The app developer is not responsible for the content of third-party websites accessed through the browser. Privacy: All AI processing happens entirely on your device. No search queries or personal data are transmitted to any external server by this app.