macOS · iOS · Audio delivery
AudioReady.Check audio against the delivery spec, then fix it.
A native Mac and iPhone app that checks a recording against the delivery standards platforms publish, shows the rule behind every number, and writes a corrected copy. It also gets any recording into the format and size a destination accepts.
App Store — coming soon
Checking is free and permanent. Studio is a one-time $14.90 licence on this direct build, bought here. Includes MP3 export. macOS 14+ · updates over Sparkle.
Screenshots
Check, fix and prepare, on the Mac
Audiobook narrators
ACX takes only MP3. The App Store version cannot write it.
Narrating for ACX? Download the direct version. The App Store version checks your chapters against every ACX requirement, but cannot write the 192 kbps constant-bitrate MP3 ACX accepts. The direct download writes it. The MP3 encoder is LAME, licensed under the LGPL, which is why it ships only in the version from this site.
Versions
Direct download and App Store, side by side
| Direct download (Mac) | App Store (Mac, iPhone, iPad) | |
|---|---|---|
| Check against every standard | Yes, free | Yes, free |
| Write a corrected copy, fix a list, export the QC report | Studio | Studio |
| MP3 export | Yes | No — AAC, M4A, WAV, AIFF, FLAC |
| ACX chapters | Check and write the MP3 | Check only |
| How Studio is bought | On this site — a licence key by email, $14.90 one-time | In-app purchase from Apple, $14.99 one-time — one purchase covers Mac, iPhone and iPad |
| Updates | Automatic, over Sparkle | Through the App Store |
| Writes beside the original file | Directly | After you grant the folder once (sandbox) |
The two purchases are separate: a licence bought here does not unlock the App Store version, and an App Store purchase does not unlock the direct download.
The problem
A file is rejected on a number you cannot hear.
ACX rejects a chapter automatically when one of five numbers is out of range, and you find out after the upload. The usual mistake is normalising peaks to −3 dB and assuming the RMS is fine: a file can peak at −3 and sit at −35 RMS. Spotify, Apple Podcasts and the streamers each publish their own targets. The work is not fixing the file — it is knowing which number is wrong.
The verdict
Per requirement: the measured value, the target, and how far off it is — RMS −16.2, target −23 to −18, not “failed”. Under it, the sentence from the platform's own document, with a link.
The fix
Studio writes a corrected copy, then reads it back from disk and measures it again — so the result is a second verdict, not a promise.
What it will not fix: a noise floor that is too high, a loudness range that is too wide, missing room tone, a file that is too long. Rewriting the file cannot cure these, and AudioReady says why before anything is bought.
Features
Check, fix, report — and prepare for sending
Delivery standards with their sources
ACX/Audible, Spotify, Apple Podcasts, YouTube, SoundCloud, EBU R128, Netflix, Prime Video, Disney+, HBO Max and ATSC A/85 — each with the quote and link it was read from.
RMS as ACX measures it
Integrated loudness, true peak, RMS, noise floor, loudness range, room tone, length, sample rate and bitrate, each measured separately.
Dialogue-gated loudness
Netflix, Prime Video and A/85 state loudness for the dialogue. AudioReady measures it with Apple's on-device speech classifier, and agrees with Dolby Dialogue Intelligence to within 0.1 LU on the files compared.
Batch and the QC report
Check a whole list for free. With Studio, fix the whole list and export a sheet per file: measured, required, and which document required it.
Your own standards
Write a client's spec once, with where it came from, and check every file against it.
Prepare for sending
Right-click a file in Finder, or use the share sheet on iPhone. Pick Mail, WhatsApp, Discord, Car or your own settings; trim, split on silence, transcribe on-device, and take the audio out of a video.
Studio for the direct download
A one-time licence, bought here
Studio on the direct download is a licence key. Buy it once, receive the key by email, and paste it into AudioReady ▸ Studio Licence…. A key activates on up to three Macs; deactivate one from the same window to move it.
Payment is handled by Lemon Squeezy. No subscription, no account.
Download
Get AudioReady
App Store — coming soon
Direct build: Developer ID–signed, notarized, updates over Sparkle, MP3 export included. macOS 14 or later. Studio $14.90 one-time, bought on this page. On the App Store, Studio is an in-app purchase at $14.99.
Support
Questions, feedback, or a standard you need
Email reaches the developer directly.
support@bdtech.app