D20 vs Game Master Helper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D20
This minimalist application allows for quick and easy dice rolling for tabletop role-playing games. It supports various dice types and offers customization options for themes and app icons. A history feature tracks recent rolls.
- Roll d4, d6, d8, d10, d12, d20, d100
- Roll multiple dice with taps or swipes
- 11 color themes
- Change app icon
- History of last 100 rolls
- No distractions, minimalist design
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Roll dice quick and easy in this minimalist app design. FEATURES • Roll a d4, d6, d8, d10, d12, d20, or d100. • Roll multiple dice with quick successive taps or by swiping up on a die. • In settings you can choose from 11 color themes. • Long hold on the color symbol to change your app icon. • In history, you can see your last 100 rolls. WHY CHOOSE THIS APP This is a no distractions app. You won’t find yourself fussing with the interface or configuring settings. Just open the app and start rolling. This is the only completely free app designed specifically with touch interface in mind. NANI APP (No Ads - No In App Purchases) A Nani App follows these requirements: 1. Free to download. 2. No in app purchases. 3. No ads. 4. App data is never used to track you. Designed By Alec Francis | alecfrancis.com Developed By Roy Dawson | roydaw@icloud.com
Game Master Helper
This app assists Game Masters by providing customizable reference materials and generating random elements like characters, loot, and encounters for tabletop role-playing games. It allows users to edit existing tables, create their own, and share them, working entirely offline with any TTRPG.
- Random character, loot, and encounter generation
- Customizable tables
- Offline functionality
- Table sharing and importing
- Support for various TTRPGs
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GMHelper helps Game Masters with reference material and generating random characters, loot, traps, encounters, names etc for TTRPGs and DnD games. All content is completely customizable. You can: - edit/update the existing example tables - create your own set of tables using the 'Create new' menu option in the main menu - share/download your table sets by using the share button on the main screen - import an existing table set use the 'Import file' menu option GMHelper works completely offline. All data is customizable, so can work with any TTRPG, including DnD 5e, ICRPG, ShadowDark etc.
Screenshots
Verdict
The clearest difference is rating: D20 at 5.0 against Game Master Helper's 4.3. D20 also leads on review sentiment (100% vs 67%) and ratings volume (20 vs 6). Game Master Helper's advantage is update cadence (every 2 weeks vs every 18 months). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
D20 holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 20 and 6 respectively. Written reviews point the same way: 100% of D20's written reviews are positive against 67% of Game Master Helper's.
D20 ships an update every 18 months, Game Master Helper every 2 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | D20 | Game Master Helper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (20 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 20 — better | 6 |
| Update frequency | Every 18 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 15 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Bryce Dawson | MobileMarketResearch |
Customer experience
D20
Game Master Helper
In-app purchases
D20
No in-app purchases
Game Master Helper
No in-app purchases
Questions
Is D20 free?
Is Game Master Helper free?
Which has better reviews, D20 or Game Master Helper?
Do D20 or Game Master Helper have ads?
Which is updated more often, D20 or Game Master Helper?
Other comparisons
