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Natural 20 Lite - for Rolling Dice

By Jon Lord

This app is only available on the App Store for iOS devices.


Ideal for board games, war games and RPG's like Dungeons & Dragons. Natural 20 Lite is a dice rolling app which handles single and multiple dice rolls. Its comfortable to use, saves time, and its easier than carrying a box of dice to each game!

***************** Feature Summary *****************

- Handles single and multiple dice rolls.
- Default dice are D2, D4, D6, D8, D10, D12, D20 and D100.
- Teacher’s die for random letters.
- Stores a history of your rolls.
- Custom probability distribution plots.
- iPad, iPhone and Apple Watch support.
- Voice Over support
- Cheaper than buying lots of dice!

*************** Descriptions of the Free Features ***************

Here's a brief description of Natural 20 Lite’s screens, which are available free!

~ Quick Roll
Simply pick your dice, and you have an instant result. Ideal for Dungeons & Dragons, Quick Roll offers the following eight dice; D2, D4, D6, D8, D10, D12, D20 and D100.

~ Multiple Dice
In multiple dice mode you can mix your dice together as you please. Tap each row to add five at a time, or use the plus or minus to add or remove one. You can roll or remove individual dice again. Stats, such as average and the sum, are displayed for each roll saving you counting on screen.

~ Teachers Die
Handy for the classroom, this die will be helpful for Maths and English. You can use it to randomly pick letters, numbers and mathematical operators.

~ Roll History
Natural 20 keeps track of all your rolls, so you can prove you actually rolled that 20! The dice stored in your history can be easily re-rolled and filtered. You can move the dice around the screen, and it will remember your order.

~ Distribution
Distribution allows you to create probability distribution plots for specified dice. These will show you the percentage chance of rolling a particular face value, and you can compare actual rolls against theoretical results. However, large numbers of dice can take a long time to calculate for theoretical plots.

*************** Features unlocked with an in-App Purchase ***************
For $0.99 USD you can permanently unlock the following screens, with a single in-app purchase.

~ Calculator
Great for large numbers of dice, or combinations with a modifier.

~ Custom Die
Custom Die lets you choose the sides of the dice, by separating them with commas. Natural 20 will pick a single item, or order them randomly into a list.

~ Colour Die
This will give you a random colour, just run your finger across the screen like a paintbrush. Displayed on the screen will be some basic information. For example the colour’s hex number, HSB and RGB values.

~ Direction Die
This will point you in a totally random direction with each spin. Swipe the screen to spin it, however you can only influence which way it spins, not the outcome!

~ Success Die
Repeatedly rolls D6’s, discarding when they fail to meet a certain value. The total successes are displayed.

~ Word Die
Keep collections of words, to randomise at a touch. Ideal for selecting locations and enemies randomly. You can even randomise your words as a whole list.

~ My Dice
My Dice allows you to save your own collections of dice, along with a description and optional modifier. These can be easily searched through, and rolled from a single tap.

~ Dice Builder
Chose how many sides your dice have, and their colours!

*************** Random Number Generation ***************

Natural 20 Lite uses your devices built in randomiser (arc4random_uniform) to generate values. This has been tested with large numbers of dice, to ensure there is no bias present. In the full version, Natural 20 offers a screen called "Distribution". This allows you to test this yourself, with rolls of 100,000 dice at a time.

What's New in Version 5.0

- Removed old iAd code. No more adverts!
- Access to the full roll history, and the Distribution feature now included with the free part of the application
- Added a way to unlock the full features of Natural 20, using an in-app purchase. (Rather than purchasing a separate app).
- Free 24 hour trial of all features


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Customer Reviews

Definitely a good little app

This is my favorite dice rolling app. It's simple to use, straightforward and can do a lot. Always my go to if I'm ever without dice for all things RPG related.


Learning to play D&D with a friend. Extremely useful and I would pay (given it had a rolling animation for some reason that counts a lot)

Amazing Versatility

Wow that's a lot of versatility for one app, most customizable dice roller i've ever seen on app store or play store!!

Natural 20 Lite - for Rolling Dice
View in iTunes
This app is designed for both iPhone and iPad
Offers Apple Watch App for iPhone
  • Free
  • Category: Games
  • Updated:
  • Version: 5.0
  • Size: 106 MB
  • Apple Watch: Yes
  • Languages: English, French, Portuguese
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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Top In-App Purchases

  1. Unlock all features in Natural 20$0.99