One tells you what's wrong with your mix. The other masters it for you. Here's how they compare — and why a lot of producers use both.
"MixDiagnose vs LANDR" is a common search, but the two tools answer different questions. LANDR asks: "Give me your track and I'll make it louder and more polished." MixDiagnose asks: "What's wrong with your mix, and how do you fix it before you master?" They sit at different stages of the workflow — and they're complementary, not competing. Let's break it down.
| MixDiagnose | LANDR | |
|---|---|---|
| Price | Free for 3 analyses/mo · $9–19/mo paid | $9–25/mo (subscription) · pay-per-track also available |
| Learning curve | Upload, wait 20 seconds, read the report | Upload, pick a genre/strength, click Master — done |
| Analysis depth | Loudness, EQ balance, stereo width, dynamics, frequency profile, severity grading | No user-facing analysis — mastering is applied internally, no diagnostic output |
| Fix recommendations | Severity-graded, plain-English list with one-click auto-fix | No — you get a mastered file, not a list of what was wrong |
| Stem separation | Coming soon (Pro tier) | No |
| PDF reports | Yes — full diagnostic report per track | No |
| Batch processing | Yes — select multiple tracks, Process All | Limited — per-track mastering via web interface |
| Time to results | Under 30 seconds from upload to diagnosis | A few minutes per track for the mastered file |
| Best for | Producers who want to know what's wrong before mastering | Artists who want a finished master without touching anything |
LANDR is an automated mastering service. You upload a finished mix, pick a genre and a "strength" setting, and their AI applies a mastering chain — EQ, compression, stereo widening, and limiting — tuned to your track. A few minutes later you get a mastered WAV back. You can preview it against the original, adjust the intensity, and download. That's the core product.
The strength of LANDR is speed and convenience. You don't need to know anything about mastering. You don't need a DAW, a plugin, or an engineer. You upload, click, and you have a release-ready master. For a lot of independent artists — especially ones releasing singles on a budget — that's genuinely valuable. LANDR's results have improved a lot over the years, and for many genres (pop, hip-hop, electronic) the output is solid.
The limitation is that LANDR doesn't tell you anything about your mix. It processes whatever you give it. If your mix has a problem — muddy low end, harsh highs, collapsing stereo image — LANDR will master around it, sometimes even amplifying it. You'll get a louder, more polished version of a mix that still has the same underlying issues. That's not a flaw in LANDR; it's just not what the tool does. It's a mastering service, not a diagnostic one.
MixDiagnose is a diagnostic tool. You upload a track and in under 30 seconds you get a report that grades your mix across loudness, EQ balance, stereo width, and dynamics. Every finding is labeled Critical, Moderate, Minor, or Ideal — so you know not just what's wrong, but how bad it is. Each issue comes with a plain-English explanation and a one-click auto-fix that applies a corrective EQ to your uploaded audio and gives you a downloadable file.
MixDiagnose doesn't master your track. It doesn't add loudness, polish, or release-ready sheen. It tells you whether your mix is ready to be mastered — and if it's not, what specifically needs fixing. That's the gap it fills: the diagnostic step between mixing and mastering that most producers skip because they don't have an objective way to check.
It's also free to start. Three analyses and one auto-fix per month, no signup, no credit card. Paid tiers start at $19/mo (billed annually) for 50 analyses and unlimited fixes. No plugin, no DAW, no installation.
LANDR is a delivery tool. If your goal is "I need a mastered track by tonight," it does that job well. Just know that it's working with whatever you give it — garbage in, polished garbage out.
MixDiagnose is a quality gate. It sits between your mix and whatever comes next — LANDR, Ozone, a human engineer — and makes sure you're not paying to master a mix that isn't done.
Here's the reality: LANDR and MixDiagnose are complementary, and a lot of producers should use both. Run your mix through MixDiagnose first. If it flags Critical or Moderate issues, fix them in your mix. Then upload the fixed version to LANDR. You'll get a better master than you would have from the original mix — because LANDR is working with a better input.
The common mistake is skipping the diagnosis step. You finish a mix, it sounds okay on your monitors, you upload it to LANDR, and you get back a master that's louder and more polished but still has the same muddy low end or harsh highs. You can't un-fix that in mastering — mastering is downstream of the mix. MixDiagnose catches it upstream, where it's still cheap to fix.
Pricing-wise, they're in a similar range. LANDR is $9–25/mo depending on the plan. MixDiagnose is free for 3 tracks or $19/mo for 50. If you're releasing regularly, the combined cost of both is still less than a single professional mastering job — and you get the diagnostic value on top. That's a genuinely good deal.
The short version: fix with MixDiagnose, master with LANDR. Use MixDiagnose to make sure your mix is ready. Then use LANDR (or Ozone, or a human engineer) to do the mastering. They're different tools for different stages — and using both will get you better results than either one alone.
This adds about two minutes to your workflow and meaningfully improves the final master. The diagnosis is the cheapest part of the process — skipping it is the expensive part.
3 free analyses a month. No signup, no card.