Comparison

d20 Calculator vs Metric Beyond

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

d20 Calculator

This app is a specialized calculator for tabletop role-playing games. It allows users to input complex dice roll combinations, including additions, subtractions, multiplications, and divisions, and provides instant results. Save custom rolls and enjoy realistic sound effects for an enhanced gaming experience.

Highlights
  • 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
Features
Read full description

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.

About

Metric Beyond

Automatically converts imperial units to metric units on the D&D Beyond website. This Safari extension works across Mac, iPhone, and iPad, making it easier to use official French D&D sourcebook values.

Highlights
  • Converts distances and weights to metric
  • Works on character, monster, and item pages
  • Supports Safari on Mac, iPhone, and iPad
  • Open source and free
  • Uses official French D&D sourcebook values
Features
Read full description

Bring the metric unit system to D&D Beyond ! Metric Beyond is a Safari Extension which will automatically convert all imperial units to metric units on the D&D Beyond* website. It uses the official values given in the french Dungeons&Dragons** sourcebooks. And it works on Mac, iPhone and iPad! MAIN FEATURES: ● Converts distances and weights in imperial units to metric units automatically ● It works on D&D Beyond character, monster, sourcebooks, spells and magic items pages, as well as the encounters tool. ● It's available for Safari on Mac, iPhone and iPad ● It's open source and free ! Find the source code at https://github.com/gencys/MetricBeyond ● And more features to come ! * ©2023 D&D Beyond | All Rights Reserved ** Dungeons & Dragons, D&D, their respective logos, and all Wizards titles and characters are property of Wizards of the Coast LLC in the U.S.A. and other countries. ©2023 Wizards.

Screenshots

d20 Calculator4 screens
Metric Beyond2 screens

Verdict

The call

The clearest difference is in-app purchases: Metric Beyond at none against d20 Calculator's 1. Metric Beyond also leads on update cadence (every 3 weeks vs every 5 months) and review sentiment (100% vs 85%). d20 Calculator's advantage is iOS requirement (9.0 vs 15.0). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. d20 Calculator sells 1 one-off in-app purchase. Metric Beyond asks for nothing beyond the download.

UpkeepUpdate frequency

d20 Calculator ships an update every 5 months, Metric Beyond every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
d20 Calculator versus Metric Beyond: the parameters behind the verdict, then further details
Parameterd20 CalculatorMetric Beyond
PriceFreeFree
Rating4.7 (343 ratings) — better—
Positive reviews85.5% of reviews100.0% of reviews — better
Number of ratings343 — better—
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS9.0 — better15.0
Further details — not scored
Size12 MB4 MB
Age rating4+4+
DeveloperLion's DenJean-Francois Vaduret

Customer experience

d20 Calculator

All ratings342 ratings
Positive93.9%
Neutral2.9%
Negative3.2%
Written reviews110 reviews
Positive85.5%
Neutral7.3%
Negative7.3%

Metric Beyond

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

d20 Calculator

Reported bugs

3 issues
  • 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

Requested features

4 requests
  • 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)

Metric Beyond

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

d20 Calculator

One-time1
  • Full Version$0.99
None

Metric Beyond

No in-app purchases

Questions

Is d20 Calculator free?
d20 Calculator is free to download, with in-app purchases available.
Is Metric Beyond free?
Metric Beyond is free to download, with no in-app purchases.
Do d20 Calculator or Metric Beyond have ads?
Neither d20 Calculator nor Metric Beyond shows ads.
Which is updated more often, d20 Calculator or Metric Beyond?
d20 Calculator ships an update every 5 months, and Metric Beyond every 3 weeks. Most recently, d20 Calculator was updated on November 1, 2026 and Metric Beyond on November 3, 2026.

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