Game Master Helper vs Grimoire Study
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Grimoire Study
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Grimoire is where your card collection lives, and where your next deck comes from. SCAN YOUR CARDS IN Point the camera at a card and it goes into your collection — set, printing, finish and condition. No typing, no spreadsheets. BUILD FROM WHAT YOU ALREADY OWN Your collection is the starting point, not an afterthought. See what you own as you build, and what a deck would actually cost you to finish. A FAMILIAR THAT SHOWS ITS WORK Your Familiar is a companion that builds a deck with you, one piece at a time. Every card it suggests comes with a reason. Every cut waits for your say-so. When it leans on a rule, it cites the rule. KEEP TRACK OF WHAT IT'S WORTH Your collection carries real prices, so you know what you're holding — and what you paid for it, kept honest and separate from what it's worth today. EVERYTHING IN ONE PLACE Wish list, binders, condition, language, notes. Search every printing of every card. Your decks and your collection stay in step, on your phone and on the web. Free to start. Grimoire is built for Magic: The Gathering collections. Grimoire is an independent tool and is not affiliated with or endorsed by Wizards of the Coast. Magic: The Gathering is © Wizards of the Coast. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Grimoire Terms of Service: https://grimoirestudy.com/legal/terms Privacy Policy: https://grimoirestudy.com/legal/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Game Master Helper at none against Grimoire Study's 8. Game Master Helper also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.4). Grimoire Study's advantage is update cadence (every 3 days vs every 2 weeks). On price and ads 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. Grimoire Study sells 8 in-app purchases, starting at $11.99 per month. Game Master Helper asks for nothing beyond the download.
Game Master Helper ships an update every 2 weeks, Grimoire Study every 3 days. The most recent releases landed on September 23, 2026 and October 5, 2026 respectively.
| Parameter | Game Master Helper | Grimoire Study |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 23 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | MobileMarketResearch | BRIAN M BREMGES |
In-app purchases
Game Master Helper
No in-app purchases
Grimoire Study
- Collector$11.991 Month
- Pro$22.991 Month
- Collector, Yearly$119.991 Year
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- Pro, Yearly$229.991 Year
- Impulse Mana$2.99
- Small Mana Pack$5.99
- Medium Mana Pack$11.99
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- Large Mana Pack$22.99
Questions
Is Game Master Helper free?
Is Grimoire Study free?
Do Game Master Helper or Grimoire Study have ads?
Which is updated more often, Game Master Helper or Grimoire Study?
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