mp3.now vs MasteringKit

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

mp3.now compared with MasteringKit
Detail	mp3.now	MasteringKit
What it does	Free audio conversion and editing with no signup required	Online AI mastering for finished songs with free preview and AI-powered adjustment
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Guest (free): 10 conversions/day, 10 MB limit. Free Account (free): 20 conversions/day, 50 MB limit. Premium: €9.99/month (€95.99/year) with unlimited conversions, 200 MB limit. Premium Plus: €29.99/month (€287.99/year) with 1 GB limit and advanced features.	Free: 30-second preview, 10 revisions with free account, no full-track download. Unlimited: $14/month or $43/year ($3.58/month), unlimited full-track exports, 20 revisions per track. Unlimited Plus: $22/month or $65/year ($5.42/month), everything in Unlimited plus unlimited revisions, full-length pr
Key features	Convert between 50+ audio formats including MP3, WAV, M4A, FLAC, AAC, OGG Compress MP3 files with bitrate control (128, 192, 256, 320 kbps) Trim and cut audio clips by start and end time Merge multiple MP3 files into one Normalize audio volume levels Change audio speed or bitrate Extract audio from video files (MP4, MOV, MKV, AVI, WebM) REST API for programmatic conversion with JSON requests Automatic file deletion after 24 hours for guests, 7 days for free accounts Batch convert up to 10 files at once on free account	Free 30-second mastered preview without signup Eleven mastering controls plus intensity setting and six-band EQ Six engineer styles as different starting points Plain-language prompt mastering with AI descriptions New version created for each adjustment, comparable while playing Batch mastering up to 10 tracks with Unlimited Plus Downloads as WAV 24-bit or MP3 320 kbps Accepts WAV, MP3, FLAC, AIFF, M4A, OGG files up to 1.5 GB and 22:30 long Priority render queue with Unlimited Plus plan Full-length preview available with Unlimited Plus
What makes it different	No signup required to start converting Privacy-first approach with no tracking or sharing of uploaded files Core tools remain free forever Fast conversions optimized to take seconds not minutes Simple interface with no dark patterns or forced signups	Free preview with no account required before paying AI-powered mastering styles as alternatives to hiring an engineer Plain-language adjustment descriptions instead of technical audio parameters Supports mastering of AI-generated songs Every revision saved and comparable while playing the track
Community votes	0	0
DR (Domain Rating by Ahrefs)	51 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	17	0
Citation Flow (Majestic)	33	6
Referring domains (Majestic)	123	1

5 details filled in for both companies.

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