Frequently Asked Questions

DefyAudio is a browser-based audio toolkit: convert and edit audio, merge several tracks into one, split a file into parts, separate a song into stems, edit tags and record your voice. All processing happens locally in your browser, so your files are never uploaded.

DefyAudio is free to start: a free account gives you 5 uses per day for each tool that has a daily limit, and voice recording and tag editing are unlimited. For unlimited use of every tool, the Pro plan costs €5.99/month.

Yes, a free account is required to use DefyAudio. Creating an account gives you 5 daily uses for each tool and allows you to track your usage. You can upgrade to Pro for unlimited access.

Absolutely. All processing happens directly in your browser. Your files never leave your device - we never see, store, or have access to your audio files.

Partly. Signing in, loading your daily usage and downloading a tool's processing engine need an internet connection. Once a tool is loaded, the processing itself runs on your device and your audio is never uploaded.

Audio Studio opens common audio files (MP3, WAV, FLAC, OGG, AAC, M4A and more) and the audio track of MP4, MOV, MKV and WEBM videos, and exports MP3, AAC, OGG, WAV or FLAC, several at once as a ZIP if you like. Audio Joiner and Audio Splitter export MP3, WAV, AAC or OGG.

Converting between lossless formats (WAV, FLAC, AIFF) preserves full quality. When converting to lossy formats (MP3, AAC), you can choose the bitrate - higher bitrates mean better quality but larger files.

Yes. Add several files, set your options once and they are processed together. The free plan converts up to 2 files per batch; Pro has no batch limit.

There is no fixed number. Because merging runs in your browser, the practical limit is your device's memory: dozens of songs merge fine, while many hours of audio need more RAM.

Yes! You can add smooth crossfade transitions between tracks or insert custom silence gaps — ideal for podcasts, mixtapes, and audiobooks.

Absolutely. You can mix MP3, WAV, FLAC, OGG and other formats in the same session, and choose the output format for the merged file.

A free account gets 5 audio conversions, 5 merges, 5 splits and 5 stem separations per day. Voice recording and tag editing are unlimited. Limits reset daily at midnight UTC.

Pro costs €5.99/month and removes the daily limits: unlimited conversions, merges, splits and stem separations. Outside the euro zone, the price is converted to your local currency at checkout.

Yes! You can cancel your Pro subscription at any time. You'll continue to have Pro access until the end of your billing period.

We accept all major credit cards (Visa, MasterCard, American Express) through our secure payment processor, Stripe.