OSReferee
Old-School Referee Companion
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Run old-school campaigns faster with regions, settlements, encounters, dice, party notes, and rules reference built for B/X-style TTRPGs at the table.
OSReferee is a tabletop campaign companion for old-school fantasy RPG referees who need fast access to prep, procedures, and table-facing tools during play.
Build and manage campaign regions with connected hexes, settlements, factions, religions, characters, treasures, and notes. Open a settlement to review its atmosphere, ruler, population, locations, rumours, services, day encounters, and night encounters without digging through scattered documents.
Run encounters from the same workspace. Track combatants, resolve combat procedures, roll dice in context, and keep useful referee prompts close while the session is moving. OSReferee is built to reduce table friction, not replace your judgment.
Use the included OSE SRD material for quick lookups during play. Browse monsters, rules entries, equipment, spells, and other referee-facing references in a format designed for mobile reading.
Key features:
• Campaign regions, hexes, settlements, factions, religions, NPCs, treasures, and notes
• Settlement views with overview, locations, rumours, services, and encounter tabs
• Encounter runner with combat flow, party context, and quick dice tools
• Built-in dice roller for common table checks
• Compendium and bestiary reference for old-school play
• Import and export support for campaign data
• iPhone and iPad layouts designed for use at the table
Premium unlocks the full referee workspace for ongoing campaign use, including expanded campaign creation and management, campaign data import/export, and the ability to import characters from OSCharacter.
Importing Player Characters: Players with OSCharacter can export their characters in .xml format and share that file with their referee for import in the Player Character menu on the Region screen.
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The developer, Blake DeRusha, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Blake DeRusha
- Size
- 67.1 MB
- Category
- Reference
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - iPad
Requires iPadOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Cartoon or Fantasy Violence
Horror/Fear Themes
- In-App Purchases
Yes
- Premium $4.99
- Copyright
- © 2026 Sorcerer of the South