# d20 Calculator

> Tabletop RPG dice calculator for complex roll combinations. (iPhone/iPad app by Lion's Den.)

- Source: https://appshunter.io/ios/app/d20-calculator/id817035968 (this page in markdown: same URL + `.md`)
- Developer: [Lion's Den](https://appshunter.io/developer/447965537)
- Category: Productivity, Games, Board, Role Playing
- Price: Free with in-app purchases
- Rating: 4.70/5 from 342 App Store ratings · 93 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 12 MB
- Languages: American English, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hebrew and 18 more
- Released: 2014-02-17
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/d20-calculator/id817035968/reviews.md

## What is d20 Calculator?

A calculator for table top games. Enter any combination of die and get the result instantly. It can be as simple as "1d4" and as complex as "(3d100 + 5d7) x 3d2". No need to add up all the numbers yourself. d20 Calculator is a useful tool for any RPG or tabletop game.

Features:
- Save your frequently used rolls with labels to help you identify which rolls belong to which attacks.
- "dx" button lets you roll any type of dice needed.. ever need a d7?
- Add, subtract, multiply, and divide any combination of dice.
- Dice roll sound effect so everyone know you're not cheating.
- 6 stylish themes available.

## Key features

- Calculate complex dice combinations
- Support for any dice type (dx)
- Save and label frequently used rolls
- Dice roll sound effects
- Add, subtract, multiply, and divide dice

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Version | $0.99 | one-time |


## What do users think of d20 Calculator?

Overall sentiment: positive

**Pros**

- 🚀 Fast and efficient dice rolling
- 👍 Simple and intuitive interface
- 💡 Ability to save frequently used dice rolls
- 🎲 Accurate and balanced random number generation
- 🔢 Versatile dice calculation capabilities

**Cons**

- 🐛 Crashes and stability issues, especially on newer iOS versions
- 🔒 Inability to restore purchases or remove ads
- 📱 Lack of support for iPad multitasking features (Split View, Slide Over)
- 🔍 Limited customization options (e.g., no option to re-roll 1s)

**Commonly reported bugs**

- Crashes when attempting to purchase the full version
- Crashes when trying to save more than one dice roll
- Ads still present even after purchasing the full version

**Most requested features**

- Add support for iPad multitasking features
- Implement option to re-roll 1s or discard certain dice
- Improve saved roll management (e.g., ability to edit saved rolls)
- Add a character creation feature (4d6 drop lowest)

## Recent user reviews (10 of 93)

All indexed reviews: https://appshunter.io/ios/app/d20-calculator/id817035968/reviews.md

### 5/5 — Perfect D&D dice calculator

*2024-01-16, version 2.12*

I use this all the time for D&D, especially for large dice rolls.

### 5/5 — Best digital dice app

*2023-11-01, version 2.12*

It just is. Check out the app its free!

### 3/5 — Needs update for Split View

*2023-10-16, version 2.12*

This app is really great and convenient. But it’d be even more convenient if it supported Split View.

### 5/5 — Wonderful

*2023-08-04, version 2.12*

Great little app, does exactly what it advertises and does it well

### 4/5 — Best app in the ttrpg toolbox

*2023-06-18, version 2.12*

This is dice roller app is the easiest to use and the best I’ve seen on the App Store. A must have for GMs and players.

### 4/5 — frustratingly close to perfect

*2023-04-30*

Presenting die rolling as a calculator is a great way to do it.  I just wish it  worked more like a calculator, where you could continue the calculation after pressing =.  

Like, if you rolled d20+7, then remembered your check should have a -2 penalty, there should be a way to subtract two without rerolling the d20.

### 5/5 — Cool

*2023-03-29, version 2.12*

I like how it shows the Maximum number. Helps with crits

### 5/5 — Wish It Would Sum (Easily)

*2023-01-03*

It’s reasonably random—more rare than you’d think—and it can roll any combination I’ve run across in a game.

I do wish it could sum the individual rolls—keep a running total, if you will. 

Also, a better display would be a major benefit, so I can see the series of rolls, not just the one just made—this goes along with my first “wish”.

There are several other dice bags that do summing and “show the tape”, but their randomness is nothing like as good as Lion’s Den.

### 5/5 — Awesome app

*2022-08-14, version 2.12*

Very easy to use great for rolling attacks with your bonus to hit and damage in 5e D&D.

### 5/5 — Balanced for when your dice arent

*2022-05-18*

I use this roller whenever i dont have dice on me or when a die i havent tested yet seems a bit off. It works great and id highly recommend it to those who need a die roller.

## Frequently asked questions about d20 Calculator

### What does the d20 Calculator app do?

This app functions as a specialized calculator designed for tabletop role-playing games. It allows users to input and calculate the results of various dice roll combinations, including additions, subtractions, multiplications, and divisions, with support for any dice type.

### What are the key features of the d20 Calculator?

Key features include the ability to calculate complex dice combinations, support for rolling any type of dice (e.g., d7), saving and labeling frequently used rolls, realistic dice roll sound effects, and options for arithmetic operations between dice rolls.

### Is the d20 Calculator free to use?

The app is free to download and use, with the option for in-app purchases. This suggests that while core functionality is available for free, some additional features or customization options might be unlocked through purchases.

### Who is the d20 Calculator app for?

This app is intended for players of tabletop role-playing games and other tabletop games. It is particularly useful for those who frequently engage in games that require complex dice rolls and want a convenient, accurate way to determine outcomes.

### Can I save my common dice rolls?

Yes, the app allows you to save your frequently used rolls and assign labels to them. This feature helps you quickly identify and reuse specific dice combinations, such as those for different character attacks or abilities, without having to re-enter them each time.

## Version history (last 5 releases)

### 2.12 — 2020-02-21

• Fix sizing issues
• Allow portrait mode on iPad

### 2.11 — 2020-02-20

Fix to in app purchase crash

### 2.1.0 — 2019-09-29

Fixes for iOS 13

### 2.0.0 — 2017-10-27

- Support for larger device sizes
- Fixed audio issues
- Bug fixes

### 1.1.0 — 2014-03-04

- Ice and Fire themes
- Minor bug fixes

## Apps similar to d20 Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [iA Writer](https://appshunter.io/ios/app/ia-writer/id775737172) | 4.6 (1,530) | $19.99 | Productivity |
| [Actions For Obsidian](https://appshunter.io/ios/app/actions-for-obsidian/id1659667937) | 4.8 (40) | Free | Productivity |
| [Campfire – Write Your Book](https://appshunter.io/ios/app/campfire-write-your-book/id1626123915) | 3.5 (70) | Free | Productivity |
| [Miniature Painter Pro](https://appshunter.io/ios/app/miniature-painter-pro/id1495938928) | 4.4 (77) | Free | Productivity |
| [Tabletop Battles](https://appshunter.io/ios/app/tabletop-battles/id1636901651) | 4.7 (123) | Free | Productivity |
| [Nuzlocke Chart](https://appshunter.io/ios/app/nuzlocke-chart/id1573090300) | 4.9 (347) | Free | Productivity |

## More apps by Lion's Den

- [Fight Club 4th Edition](https://appshunter.io/ios/app/fight-club-4th-edition/id447965534)
- [Fight Club PFRPG/3.5 Edition](https://appshunter.io/ios/app/fight-club-pfrpg35-edition/id765302703)
- [Game Master 3.5 Edition](https://appshunter.io/ios/app/game-master-35-edition/id859823492)
- [Game Master Pathfinder RPG](https://appshunter.io/ios/app/game-master-pathfinder-rpg/id869493578)
- [Fight Club 5th Edition](https://appshunter.io/ios/app/fight-club-5th-edition/id901057473)

All apps by Lion's Den: https://appshunter.io/developer/447965537

## Related topics

[d20 calculator](https://appshunter.io/ios/topics/d20-calculator) · [dice calculator](https://appshunter.io/ios/topics/dice-calculator) · [dice odds calculator](https://appshunter.io/ios/topics/dice-odds-calculator)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*