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Dice by PCalc

Screenshot by Josh Centers


Take a Chance with Dice by PCalc

James Thomson, the developer of PCalc, is famous for over-engineering his popular and long-standing calculator app. Whenever Apple announces a new technology, whether it’s watchOS, tvOS, 3D Touch, Siri Shortcuts, or even ARKit, you can be sure that PCalc will be among the first apps to adopt it.

Now Thomson has brought that same level of tech enthusiasm to random number generators with Dice by PCalc for the iPhone and iPad ($1.99). Dice apps are nothing new—the App Store is littered with them—but you won’t find another one with nearly the same level of detail.

Dice is as skeuomorphic as an app can be. It displays a wooden box, into which you can drop any combination of multi-sided dice. Anyone familiar with tabletop role-playing games (RPGs) like Dungeons & Dragons will instantly recognize the designations—D4 for a four-sided die, D6 for the traditional six-sided die, and so on, all the way up to D100, which is useful for generating percentages.

Tap a button to drop a die on screen and watch it roll and bounce with realistic physics until it settles. You can flick a die with your finger to reroll it or shake your device to reroll all the dice on the screen. Of course, you could tap the reroll button, but that’s not as much fun.

I’m impressed by the stability and performance of Dice. I’ve dropped dozens of dice at once—so many that they start stacking on top of each other—to see if I could crash the app, and I haven’t succeeded yet.

Thankfully, you don’t have to add up dice results as you do in the real world. Dice does it for you, along with listing how many and what kind of dice you rolled. You can also add modifiers to your dice rolls, like +1 or -1, which is handy for RPGs that require modifiers. You can also perform “advantage” (ADV) and “disadvantage” (DIS) rolls. These are types of rolls used in later editions of Dungeons & Dragons in which you roll two dice instead of one and take the higher or lower result. You can even set it so that the extra ADV/DIS die has a different look than the primary die.

Using modifiers in Dice

I do wish Dice would add up the dice results by dice type, and James Thomson told me that he has slated this feature for a future release. Such a feature could be useful if, for instance, you’re playing a game where you have to roll a D20 to determine whether you hit an enemy and then two D10s to figure how much damage was done. It also would be nice if you could roll all of those dice at once to save time. The best way I’ve found to do that is to tap the buttons to drop the individual dice on screen—Dice will tally multiple dice of the same kind dropped in succession—and then tap Clear to clear off the board.

You can also save multiple sets of dice and roll them all with a single tap, but it takes a couple of taps to access the sets. I would like to see a way to pin saved dice sets to the main screen—again, Thomson told me this is in the works. The latest version of Dice works with Siri Shortcuts, so you can create a shortcut for a dice set and then activate it by saying something like “Hey Siri, roll a D20.”

Dice sets in PCalc

You can choose from a variety of different dice styles, all of which look great. The default style is steel, but you can switch between topaz, ruby, plastic, and even a lava style. Dice also offers a dark mode that swaps out the wooden background for pure black.

This video shows off what Dice can do.

I was a little surprised that Dice doesn’t include an augmented reality feature, given all the AR-related bells and whistles in PCalc. It would be cool to be able to roll virtual dice on a real table. James Thomson said that would be hard to pull off since the dice models are huge, so you might have to settle for rolling the dice in your yard instead of on a table.

If you play dice-intensive games or have any other reason to roll dice regularly, Dice by PCalc is well worth a couple of bucks.

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Comments About Take a Chance with Dice by PCalc

Notable Replies

  1. I don’t play any dice games so I don’t need this. But it’s James Thomson so it was an auto-buy. I’m not sure I understand the ADV setting. But I guess it doesn’t matter as I don’t imagine I’ll ever use it. But it’ll be a fun thing to show people.

  2. I had to do some research to figure it out because I haven’t played Dungeons and Dragons since 3.0. It’s a mechanic in the newer versions where you roll two dice and take the higher value. For my purposes, it made it easier to fill the board with dice :slight_smile:

  3. Here’s an example of what is confusing me. I have it set for 2D20. When I selected ADV it created an additional pair of dice in another color. This roll says my total is 32. That’s the higher of the black dice and the lower of the silver dice. I would have expected either 33 (the higher of each color) or 27 (the higher pair).

  4. That looks like a bug to me, and I’ll report it as such.

  5. But dice can be used for other random number generation. For example I had a gate opener that used an inline switch module with 7 switches and 3 (+,0,-) positions per switch. I used a die to decide position to use for each switch. I rolled the die 7 times, once per switch. Rolling a 1 or 4 was position +, a 2 or 5 was position 0, and 3 or 6 was position -.

  6. Just occurred to me to recommend adding Petals Around the Rose to his dice. This would be perfect for it.

    If you are not familiar with Petals Around the Rose it involves 5 6-sided dice. You have to figure out the secret on your own. The secret is only passed on by people figuring it out. We assume it has been the source of some divorces.

  7. I don’t think that result is bugged. I played a bit with the advantage rolls in the application, and the thing to note is that usually Advantage in D&D5e applies to a single D20, becoming two, take the highest. So it spawns a black die to go with the white die. In this case there are two white dice, so each has a black die to compare to for advantage, so the pairing that you cannot see is black 20 with white 13 and black 7 with white 12. So it reads 20 + 12 = 32.

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