# d20 Calculator

> Productivity

Canonical page: [https://chrome-stats.com/d/id817035968](https://chrome-stats.com/d/id817035968)

## Overview

- **ID:** `id817035968`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Lion's Den
- **Category:** Productivity
- **Rating:** 4.70 / 5 (343 ratings)
- **Version:** 2.12
- **Last updated:** 2020-02-21
- **First published:** 2014-02-17
- **Size:** 12 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/d20-calculator/id817035968)
- **Privacy policy:** [https://sites.google.com/view/lions-den-fc5-privacy-policy](https://sites.google.com/view/lions-den-fc5-privacy-policy)

## Description

d20 Calculator is a versatile dice calculator for tabletop RPGs. Enter expressions like 3d6+2d8 or (3d100 + 5d7) x 3d2 to get instant results, so you never have to tally dice by hand.

Key features include saving frequently used rolls with labels, a dx button to roll any die you need, arithmetic operations on dice, a dice roll sound effect to let everyone know when a roll lands, and six stylish themes to tailor the look and feel.

## Rankings

- #84,438 — Overall

## Review summary

Users praise d20 Calculator for its intuitive UI, speed, and ability to handle complex dice formulas with saved presets. The most common drawbacks are crashes during save/purchase/restore actions and iPad-specific instability. Some reviewers also wish for roll history/run totals features. Overall, it’s seen as a strong, versatile dice calculator for gaming despite stability and feature-history concerns.

### Pros

- Intuitive, calculator-style UI that makes entering dice formulas easy.
- Fast results with visibility of individual dice results for transparency.
- Powerful and flexible: supports complex dice formulas and large dice pools.
- Saves and names presets/rolls for quick reuse.

### Cons

- Frequent crashes during key actions such as saving rolls, purchasing upgrades, and restoring purchases.
- iPad-specific instability and UI constraints (full-screen requirement, landscape mode, and occasional iPad crashes).
- Users request roll history/tape and running totals features that are not consistently available across reviews.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id817035968)