uCalculator vs CoronaSDR

The most powerful, beautiful & high precision Programmer, Scientific and Standard calculator on the mobile/Pad platform. The programmer mode calculator support binary(BIN), octal(OCT), decimal(DEC) and hexadecimal(HEX), precise to 64 digits. The scientific mode calculator support most scientific calculation formula, precise to 32 digits. The standard mode calculator is simple, elegant and practical, precise to 16 digits. Automatic quick switch different calculator modes while device orientation changed if auto rotation enabled. You can also force to switch to any calculator mode by long touch the top-left 'u' button or long press the keyboard key 'u' then select the desire calculator mode.

Explore the radio spectrum from your iPhone or iPad. CoronaSDR connects to an RTL-SDR receiver through a rtl_tcp server on your local network, bringing live tuning, audio, spectrum, and waterfall displays to your screen. LISTEN AND EXPLORE • Receive AM, narrow FM, wide FM stereo, USB, LSB and CW. • Find signals with the live spectrum and waterfall. • Tune by dragging across the spectrum and adjust receive bandwidth, squelch, and gain. • Scan saved stations or a frequency range. • Keep listening in the background with system playback controls. NEW: CW AND FT8 DECODING • Turn a selected CW signal into text, with listening-pitch and decoding-speed controls. • Receive FT8 messages with a message history, details, and text sharing. • Mute listening audio while decoding continues in the foreground. • Freeze displayed results to read them while reception continues. CW and FT8 decoding are receive-only and currently experimental. Decoding requires an active receiver connection and pauses when the app moves to the background. Some signals and messages may be missed. FT8 reception times are estimates. SAVE YOUR STATIONS • Organize favorites with tags. • Import and export station lists in CSV or TSV format. • Return to saved frequencies and listening modes. ADJUST YOUR RECEIVER • Set gain and frequency correction in PPM. • Control direct sampling, offset tuning and bias tee where supported by your receiver and server. • Adjust audio filters, audio gain control and noise blanking. • Use deep links to open listening actions. REQUIREMENTS • iPhone or iPad running iOS 18 or later. • An RTL-SDR receiver connected to a running rtl_tcp server on your local network. • A suitable antenna for the signals you want to receive. Receiver hardware, antenna, and server are required separately. Available frequencies and reception quality depend on your equipment and setup. CoronaSDR is free and open source.