Write and save JavaScript code as .js files. Execute scripts directly on the device without network access. Use syntax highlighting and a JavaScript console for testing and debugging.
Measure device responsiveness by recording video of button presses and screen responses. Mark input and output times with frame-accurate scrubbing. Display the latency difference in milliseconds.
Generates tones between 0 Hz and 25 kHz to remove dust and from speakers. Users can manually set frequencies and adjust cleaning duration. It tests performance and clears debris for improved audio quality.
Calculate payments with weekly, bi-weekly, and monthly options. Input taxes, insurance, and utilities. Estimate interest savings from higher payments. View amortization schedules. Save and compare multiple calculations. Sync to iCloud.
