How to check an MM2 trade in ten seconds with a screenshot
A free scanner reads both offers from a picture of the trade window and tells you if you win, lose or break even.
I run MM2 Trade Hub, the fan-made site and app this article is about.
Anyone who trades in Murder Mystery 2 knows the moment. Somebody sends an offer with six or seven items in it, the trade window is open, and you have to decide before they get bored and leave. The honest way to check is to type every item name into a value calculator. By the time you have typed the third one, the other player has cancelled.
That gap is where most bad trades happen. People do not lose value because they cannot do the maths. They lose it because there is no time to do the maths.
So we built a scanner into our free app. You give it a picture of the trade window and it does the typing for you.
How it works
It takes four taps.
- Open the Calculator tab and tap “Scan a trade with camera”. The first time, the app downloads the scanner once. It is about 5 MB.
- Pick camera or screenshot. If you play on a PC or console, photograph the screen with your phone. If you play on the same phone, take a screenshot in the game and choose it.
- Crop to the trade window. Drag the corners so the box holds YOUR OFFER and THEIR OFFER and nothing else.
- Read the result. Both sides appear with a value on every item, both totals, and a verdict: win, fair or lose.
A worked example
Say someone offers an Icepiercer, a Candy and a Luger for your Harvester. With the values on 12 November 2026, the scan shows this:
- You give: Harvester, 250
- You get: Icepiercer 165, Candy 90, Luger 17, which is 272 in total
- Result: a win of about 8%
The rule is simple. If the two totals are within 5% of the bigger side, the trade is fair. Past that, it is a win or a loss for you.
What it reads
- Every item on both sides of the window.
- The Chroma tag, so a chroma is not priced as the plain item.
- Stack counts such as x2 or x27, so a pile of the same item is counted in full.
- Screenshots from a phone, tablet or PC, and phone photos of a monitor or TV.
When the name under an item is too blurred to read, a small picture model names the item from its art instead.
What it does when it is not sure
This was the part we cared about most. A scanner that guesses is worse than no scanner, because you will trust it.
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When the scanner is unsure about an item, it puts a small question mark on it and holds back the verdict until you have checked. You tap the item and confirm it, pick another match, or remove it. We would rather show no answer than a confident wrong one.
Your picture stays on your phone
The picture is read on the device. Nothing is uploaded unless you choose to send a picture to us as a report, which helps us fix scans that went wrong.
Tips for a clean scan
- A screenshot always beats a photo.
- If you photograph a screen, move close enough that the trade window fills most of the picture.
- Hold the phone the same way up as the screen.
- Avoid glare from a window or lamp on the monitor.
A number is where the decision starts
A win on value is not always a good trade. Some items are worth a lot on paper and take weeks to trade away. Before you accept, look at how wanted each item is as well as what it is worth.
The scanner is free, with no limit on scans, on iOS and Android. The full guide with pictures of each step is here: MM2 trade scanner. If you prefer to type the items yourself, the trade checker on the site uses the same rule.
MM2 Trade Hub is a free fan-made site and app. Not affiliated with Roblox or Nikilis. Values come from community value lists and may differ from what individual players accept.
