Great app for mixing engineers!
Response from developer
Thank you kindly! I've added some more features since then. Hope you enjoy them!

This app allows users to instantly compare two audio files side-by-side with synchronized playback and visual feedback. It's designed for music producers, audio engineers, and audiophiles to make critical listening decisions with precision.
1.3.0
May 15, 2026
- AudioShare import/export - Loudness Matching - Mono/Stereo toggle
More$12.99
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Thank you kindly! I've added some more features since then. Hope you enjoy them!
MixMaster A/B is a mobile application designed for comparing two audio files side-by-side. It offers instant switching, synchronized playback, and visual feedback tools like waveform and spectrum analysis to aid in critical listening decisions.
This app is ideal for music producers, audio engineers, audiophiles, and content creators who need to meticulously compare different versions of audio files, such as mixes, masters, or various audio formats.
MixMaster A/B supports common audio formats including MP3, M4A/AAC, WAV, and AIFF, among others. This broad compatibility ensures you can compare most of your audio files.
Yes, MixMaster A/B contains advertisements. As it is a free application, ads are displayed to support its continued development and availability.
Yes, MixMaster A/B prioritizes user privacy. All audio processing is done directly on your device, and no audio files are uploaded to any servers, ensuring your content remains private.
MixMaster A/B is available for iPhone, iPad, and iPod devices. It is optimized for one-handed use in portrait mode.
The app was last updated on February 18, 2026, with version 1.2.1. This indicates a recent update, suggesting ongoing support and potential for future improvements.
The primary benefit is the ability to make confident critical listening decisions by eliminating guesswork. Instant, synchronized switching and detailed visual feedback help users identify subtle differences they might otherwise miss.