ABSeq vs 2Track Audio

ABSeq is an A/B comparison tool for producers and mixing and mastering engineers. Load two to four versions of a mix, a master or a reference track and switch between them in sync. Auto Gain matches their loudness first, so the louder version can't win by default. COMPARE MIXES LEVEL-MATCHED • One large A/B key switches tracks without losing your place in the song • Auto Gain matches every track to the quietest one by integrated loudness (LUFS) • Compare a new mix with the last one, a master with the pre-master, or your song with a reference track BLIND A/B TEST • ABSeq hides which track is which and shuffles them every round • Pick the one you prefer in each round, for 1 to 50 rounds • At the end, ABSeq shows which mix you picked and how often • Every round is level-matched, so you're judging the mix and not the volume LUFS METER AND TRUE PEAK • Integrated LUFS and true peak (dBTP) on every track • How much Spotify, Apple Music, YouTube, Tidal, Amazon Music and Deezer will turn the track down SEE WHAT YOU HEAR • Live spectrum analyzer • Pro: loudness graph, tonal balance view and an A/B difference curve that shows where two mixes differ, band by band SEQUENCER • Steps through your tracks for you, in time with each file's detected tempo • Choose the beat division and step order, then just listen CAR TEST AND HEADPHONE CHECK • Keeps playing and switching with the screen locked • Lock-screen controls play, pause and switch tracks • Works over Bluetooth and wired headphones, speakers and car audio YOUR FILES, YOUR DEVICE • Opens WAV, AIFF, FLAC, MP3, M4A and AAC files from the Files app • Everything is analyzed on your device. No account, no tracking. • Save sessions and reopen them with their files in place • Designed for iPhone and iPad, with two-screen layouts on iPad and foldable iPhone ABSEQ PRO Comparing, level matching, blind tests, LUFS and the spectrum are free. Pro adds the loudness, tonal balance and A/B difference graphs, unlimited saved sessions (the free tier keeps 3) and iCloud sync of sessions and their audio across your devices. Pay once for Lifetime, or subscribe monthly. Payment is charged to your Apple Account at confirmation. Monthly renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in Settings → Apple Account → Subscriptions. Terms: https://www.abseq.app/terms Privacy: https://www.abseq.app/privacy Help: https://www.abseq.app/help Support: https://www.abseq.app/support

2Track is the essential A/B comparison app that helps you make confident mixing decisions. Load two versions of your track, switch between them instantly, and add timestamped comments to document exactly what needs to change. Whether you're comparing your demo to the final mix, evaluating different mastering options, or reviewing client feedback, 2Track Audio makes the process fast, organized, and professional. KEY FEATURES • Seamless A/B Switching: Toggle between two audio files instantly with linked playback at identical timestamps • Timestamped Comments: Click to add notes at any point in your tracks - every comment saves the exact playback position • Session Management: Save multiple comparison sessions with different track pairs and all your comments • Professional Export: Generate beautifully formatted PDF reports with all your feedback, perfect for sharing with clients or bandmates • Completion Tracking: Check off comments as you address them to stay organized through your revision process • Precise Playback: ±5 second skip controls let you quickly review specific sections • System Integration: Full support for CarPlay, Bluetooth, AirPlay, and Lock Screen controls PERFECT FOR • Musicians comparing demo vs. final mixes • Producers evaluating different production versions • Audio engineers testing mastering options • Mix engineers providing detailed client feedback • Anyone making critical audio decisions https://www.apple.com/legal/internet-services/itunes/dev/stdeula/