Sondra: Audio & Video Tools

Sondra puts 15 everyday audio and video tools in one app. Remove background noise from a voice memo, make a video small enough to send, cut out a part, or have a text read aloud. Your files are processed right on your iPhone or iPad. CLEAN UP THE SOUND • Remove background noise: a speech denoiser (AI) that reduces hum, fans, traffic and room noise while keeping the voice, plus a gentler mode for music or several speakers. Works on audio and on the sound of a video. • Make a quiet recording louder. • Remove silent pauses from a talk or a lecture. VIDEO TOOLS • Make a video smaller so it is quick to send. • Cut out a part, speed up or slow down, join files into one. • Get the sound from a video as MP3 or M4A. • Change the format: MP4, MOV, MKV, MP3, WAV, FLAC and more. • Turn a video into a GIF, a GIF into a video, or take a picture from a video. • Check a video's resolution and frame rate. RECORD, READ ALOUD AND PRACTISE • Record with the microphone, then clean up the noise in one go. • Read text aloud with your device's voices in many languages, or download natural English voices (about 110 MB, once). • Read along: words light up as they are read; tap one to hear it again. • Practise speaking: repeat a sentence or the whole text, then Say it yourself — hear a sentence, record yourself and compare. • Today's English sentence, and a Sentence of the day widget for your Home Screen. • Turn audio into a video you can post anywhere. MADE FOR iPHONE AND iPAD • On iPad: a side bar, larger pages and larger reading text. • Drag a video or a recording from Files, Photos or another app straight into Sondra. • Keyboard shortcuts on iPad: ⌘O to open a file, ⌘Return to start, ⌘1–3 to switch tabs. • Share a video from Photos or a file from Files straight to Sondra. • Save results to Photos or share them to any app. • Long-press the app icon for quick actions. • Works with Siri, Shortcuts, Control Center and the Lock Screen. PRIVATE BY DESIGN • Files are processed on your device and are not uploaded. Most tools work without an internet connection. • Videos keep the date they were filmed; the location is removed. • No account, no ads, no watermark, no in-app purchases. • Nothing is sent automatically. A problem report is sent only if you review it and tap Send. GOOD TO KNOW • Noise removal is made for speech. It does not separate vocals from music. • Long or 4K videos take longer on older iPhones and iPads. Sondra also runs in your browser at sondra.app and as a desktop app. Questions and ideas: [email protected]