If you want to hear your mix through your phone while you work, you have two polished options: Mix to Mobile by Sound on Digital at $39, and Auxfeed, which is free. Both solve the same problem. Here is what each one actually does.
What Mix to Mobile Does
Mix to Mobile is a DAW plugin and mobile app from Sound on Digital. Install the plugin (VST3, AU, or AAX on macOS or Windows), press play, and the app on your phone receives a lossless audio stream over Wi-Fi. It also works via USB cable when your iPhone or iPad is connected directly to a Mac. The receiver app is free; the plugin requires a one-time $39 license with a 30-day free trial. There is no subscription. Both iOS and Android are supported. Mix to Mobile is a well-maintained product — it is now on version 1.6, with DAW-automatable mute buttons, per-device audio routing in the mobile app, and the ability to relay audio from your phone to AirPlay or Bluetooth speakers.
What Auxfeed Does
Auxfeed is a free DAW plugin and mobile app that streams audio from your DAW to your phone in real time. The plugin runs as VST3, AU, or AAX on macOS, and VST3 or AAX on Windows. The iOS and Android apps are both free. On the same Wi-Fi network, Auxfeed auto-discovers the plugin using Bonjour — no IP address to type, no account required. The free tier includes PCM lossless streaming, Opus encoding, momentary LUFS metering in the plugin, and AirPlay output on iOS. Auxfeed Pro ($9.99/month or $79/year) adds relay streaming over the internet, mid/side/mono/solo monitoring, a 3-band EQ, platform loudness targets, and full integrated LUFS, true peak, and LRA metering.
Feature Comparison
| Feature | Mix to Mobile | Auxfeed (Free) | Auxfeed Pro |
|---|---|---|---|
| Price | $39 one-time | Free | $9.99/mo or $79/yr |
| macOS plugin | Yes (VST3, AU, AAX) | Yes (VST3, AU, AAX) | Yes (VST3, AU, AAX) |
| Windows plugin | Yes (VST3, AAX) | Yes (VST3, AAX) | Yes (VST3, AAX) |
| iOS receiver app | Yes (free) | Yes (free) | Yes |
| Android receiver app | Yes (free) | Yes (free) | Yes |
| Wi-Fi streaming | Yes (auto-discovery) | Yes (Bonjour auto-discovery) | Yes |
| USB cable (no Wi-Fi) | Yes (Mac + iPhone/iPad) | No | No |
| Remote streaming over internet | No | No | Yes (relay included) |
| LUFS metering | No | Momentary LUFS | Integrated LUFS, true peak, LRA |
| Mid/side monitoring | No | No | Yes |
| Account required | License required | No | No |
| Free trial | 30 days | Always free | 7-day trial |
When to Use Mix to Mobile
Mix to Mobile is a solid, mature product worth the $39 if you want a one-time purchase with no ongoing cost and no free-tier limitations. The USB cable option is genuinely useful if your studio Wi-Fi is unreliable or if you want zero wireless latency with an iPhone plugged directly into your Mac. The v1.6 update's DAW-automatable mute buttons are a thoughtful workflow feature. If you already own it or prefer a perpetual license model, there is no reason to switch.
When to Use Auxfeed
Auxfeed makes sense when you do not want to pay anything to check your mix on a phone. The free tier covers the core use case completely: install the plugin, open the app, press play, and your phone plays your mix in real time. Bonjour auto-discovery means it just works on the same Wi-Fi without any setup. If you also mix for clients remotely or want your phone to function as a metering bridge with integrated LUFS and true peak, Auxfeed Pro adds all of that for $9.99/month. The Android app is a fully native Compose app, not a port, which matters on Android.
Other Comparisons
For a complete guide to using your phone as a reference monitor while mixing, see Phone as Studio Monitor — The Engineer's Guide.
The Bottom Line
Mix to Mobile costs $39 once and delivers a clean, polished experience with the added option of USB cable monitoring. Auxfeed delivers the same core Wi-Fi streaming for free, with a Pro tier that goes further into metering and remote relay streaming. If you are evaluating both, Auxfeed costs nothing to try and requires no account to start.
Download the free Auxfeed plugin at auxfeed.com and the Auxfeed app on your phone. No account required. Install and press play.