Review · 1 min read·by CS2Apps editorial
Case opening + Armory ROI calculator with arbitrage scanner.
CSROI is best for quick "ev of opening a case right now" answers. Free to use.
CSROI is the de-facto standard for "should I open this case?" math. It pulls live Steam Market prices for every drop from every active and discontinued case, weights by drop probability, subtracts Steam fees, and surfaces the expected return of one opening. The same engine drives a comparable view for the CS2 Armory rotation. A separate page tracks cross-marketplace arbitrage opportunities.
The site is free, fast, and updated frequently. Its main weakness: limited explanation of methodology and no historical charts — you see today's number, not the trend.
Pros
Caveats
Direct comparisons with the closest alternatives.
Pick another tool — we'll route you to the head-to-head if we have one, or open the other review.
We don’t have a direct head-to-head for CSROI × Buff163 yet — read both reviews and request the matchup.
free · Case ROI Calculators
CSROI