Test audio output with customizable sound tones to evaluate speaker performance. Measure decibels and hertz using a built-in sound level meter. Check microphone quality by analyzing sound input levels.
by Appchi LLC★ 4.637,325 ratingsMusicFreeData updated 2026-11-12
Edit and preview Markdown documents with support for GitHub Flavored Markdown, tables, and LaTeX. Sync across devices using iCloud. Export to Markdown, PDF, or PNG. Swipe to switch between raw text and preview. Dark mode available.
Access live broadcasts, exclusive photos, and unique music content. View behind-the-scenes material and connect with other fans. Subscribe to unlock premium features. Manage subscriptions and payments through the Apple account.