Exact odds, advantage, damage
Stop guessing your rolls. DiceOdds computes the exact probability of any dice expression, with advantage, keep and drop, success pools and expected damage. Fully offline.
Download on the App StoreA one-time purchase. No subscription.

Every result is computed exactly, not estimated from random samples. The numbers are the true probabilities.
Standard notation like 3d6+2, 2d20, 1d8+1d6+3 Advantage and disadvantage Keep and drop the highest or lowest dice (great for ability scores) Success pools: count how many dice beat a target number Expected damage per attack, including critical hits
A clear distribution chart shows how likely every outcome is, plus an "at least / at most" table for the chance to beat a difficulty class or armor.
One tap for the rolls you use most, and save your own expressions for next session.
No sign-in, no ads, no tracking, no network access. Everything runs on your device. One simple purchase. No subscriptions.







DiceOdds is a probability calculator for tabletop role-playing and board games. It does not roll dice for you — it tells you the exact odds before you roll, so you can plan the smart play.
Type any dice expression and instantly see the full distribution, the mean, the range, and the chance of hitting any target number.
Every result is computed exactly, not estimated from random samples. The numbers are the true probabilities.
A clear distribution chart shows how likely every outcome is, plus an "at least / at most" table for the chance to beat a difficulty class or armor.
One tap for the rolls you use most, and save your own expressions for next session.
No sign-in, no ads, no tracking, no network access. Everything runs on your device.
One simple purchase. No subscriptions.
A one-time purchase. No subscription.
Only on your iPhone. No account and no sign-in required.
iPhone, from the App Store.
Email suportapps44@gmail.com.