Natural 20 vs RollLux
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Natural 20
This app simulates rolling various dice for tabletop games like D&D and war games. It offers features for single and multiple dice rolls, custom dice, roll history, and probability plots. It's a convenient alternative to physical dice for any game.
- Single and multiple dice rolls
- Customizable dice with colors and sides
- Dice filtering and rerolling
- Range Die and Custom Die options
- Roll history and statistics
- Dice Calculator and specialized dice
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Ideal for board games, war games and RPG's like Dungeons & Dragons. Natural 20 is a dice rolling app which handles single and multiple dice rolls, and much more. 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. - More dice can be added, with different colours and sides. - Multiple Dice can be easily filtered and rerolled. - Range Die gives you a random number in any range. - Custom Die lets you choose the faces of the dice. - Direction Die points you in a random direction. - My Dice allows you to store custom sets of dice. - Offers a Dice Calculator, Word Dice, Teachers Dice, and more! - Stores a history of all your rolls. - Custom probability distribution plots. - iPad, iPhone and Apple Watch support. - Voice Over support - Dark mode support - Cheaper than buying lots of dice! *************** Feature Descriptions *************** Natural 20 has fifteen screens of features, to help you manage your dice. Here's a brief description of them. ~ 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. This mode has been designed with Warhammer in mind, and you can easily filter the dice at the touch of a button. The remaining dice can be rolled again to find out how many enemies you wound. Stats, such as average and the sum, are displayed for each roll saving you counting on screen. Buttons are provided to remove the highest or lowest rolls, as well as any range in between. ~ Calculator Great for large numbers of dice, or combinations with a modifier. ~ 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. ~ 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. ~ Range Die Pick any range, and receive a random number. Your three most rolled ranges are available at the press of a button. ~ 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. When picking letters you can specify if they are upper or lowercase, and also pick between vowels and consonants. ~ Colour Die This will give you a random colour, just run your finger across the screen like a paintbrush. Some basic information is displayed, such as 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! ~ 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.
RollLux
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RollLux is a simple way to pick a set of unique numbers from a range you choose. Set the start and end anywhere from 1 to 100, then choose 1 to 7 regular numbers. Turn on Special to draw one additional unique number from the same range. Every number in a draw is different, and the total stays within the available range. When the range contains only one number, Special pauses without losing your preference and resumes when the range grows. Choose Morandi, Forest or Ocean colors. Your color theme, sound setting and Special preference are saved on this device. Tap the results to copy the numbers, with the Special number clearly labeled. The refreshed flat interface includes a new icon, short flip animations, light and dark appearances, larger-text support and VoiceOver labels. English, Traditional Chinese and Japanese follow your device’s language preferences. No account registration, in-app purchases, subscriptions or paid features. Number selection runs on your device. RollLux does not collect data or track you; copying results only writes them to the system clipboard when you tap the results.
Screenshots
Verdict
The clearest difference is price: RollLux at Free against Natural 20's $0.99. Natural 20's advantage is update cadence (every 2 months vs every 43 months) and device support (4 vs 2). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
RollLux is free to download; Natural 20 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Natural 20 ships an update every 2 months, RollLux every 43 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | Natural 20 | RollLux |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.5 (57 ratings) — better | — |
| Positive reviews | 81.5% of reviews | — |
| Number of ratings | 57 — better | — |
| Update frequency | Every 2 months — better | Every 43 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 13.6 — better | 15.0 |
| Further details — not scored | ||
| Size | 38 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Lord | Liqing Lin |
Bugs and requests
Natural 20
Reported bugs
6 issues- 🐛 Many dice don't work on Apple Watch
- 🐛 Blank screen on Apple Watch dice
- 🐛 Some dice don't work on Apple Watch
- 🐛 D2, D4, D6 have no image/number on Apple Watch
- 🐛 Not working with watchOS 4.2.2
Show 1 moreShow fewer
- 🐛 Dice don't give impression of rolling
Requested features
16 requests- Option to choose die roll color
- Configuration shared between devices
- Shake to roll functionality
- 3D dice models
- Option to display die name under result
Show 11 moreShow fewer
- More colors for dice
- Option to change dots on D6 to numbers
- Negative numbers on range die
- More features in Success Die (sides, success value)
- Calculator: Exploding Dice
- Calculator: Rolling random amount of dice
- Calculator: Support for * and / operators
- Custom word die for locations/enemies
- Option to re-roll selected dice
- Option to show dice below a certain value
- Easily accessible custom dice sets
RollLux
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Natural 20
No in-app purchases
RollLux
No in-app purchases









