Prepare
Build the campaign structure from regions, wilderness hexes, settlements, factions, religions, NPCs, treasures, notes, and lore.
OSReferee: an OSE-compatible referee and campaign manager
Download OSRefereePlan regions, organize campaign material, run encounters, and keep rules reference close for Old-School Essentials and B/X-style campaigns.
Campaign tools and supported workflow
Start with regions and region dashboards, then organize keyed hexes, settlements, locations, services, rumours, factions, religions, NPCs, treasures, campaign notes, lore, and supported day or night material. During play, move into encounter preparation, combat-state management, contextual dice tools, and character reference.
Run
Prepare encounters, track combat state, use contextual dice tools, and consult player-character details while the session is moving.
Reference
Use bundled OSE-compatible compendium material for rules, spells, equipment, and monsters where available in the app.
Separate layouts for iPhone and iPad.
The same locally stored campaign data moves from quick phone reference to wider iPad dashboards for preparation and session use.
Character import, backup, and local control.
Use existing eligible characters from OSCharacter, keep a local recovery backup, and synchronize the same campaign library privately through Apple CloudKit. OSTools for Mac opens that same library on the desktop.
Free and Premium
Download OSReferee free and run one region with starter limits. The one-time $4.99 Premium upgrade unlocks unlimited local capacity in both OSReferee and OSTools for Mac. The separate $5.99 monthly OSTools Pro subscription unlocks connected campaign tools in both.
FreeOne region, with starter limits for characters, hexes, settlements, encounters, factions, and religions.
PremiumUnlimited regions and expanded campaign material.
BackupLocal backup export and import, plus optional iCloud backup and restore controls.
OSReferee FAQ
Direct answers about campaign scope, encounters, reference, devices, backups, and Premium.
Does OSReferee support Old-School Essentials campaigns?
Yes. OSReferee is an independent, OSE-compatible campaign tool designed for Old-School Essentials and B/X-style play.
What campaign information can it track?
It can organize regions, settlements, keyed hexes, factions, religions, NPCs, treasures, campaign notes, lore, and related settlement or wilderness material supported by the app.
Can it manage encounters and combat state?
Yes. OSReferee includes encounter preparation and running tools, combat-state management, contextual dice tools, and character reference.
Does it include rules or compendium reference?
Yes. The app includes bundled OSE-compatible compendium reference for rules and supported spell, equipment, and monster material.
Can it import characters from OSCharacter?
Yes. OSReferee can import supported character export files created by OSCharacter.
Does it work on both iPhone and iPad?
Yes. OSReferee provides layouts suited to both iPhone and iPad.
How are campaign backups handled?
Campaign data is stored locally. OSReferee can export and import local backup files and also provides optional iCloud backup and restore controls.
What is included in Free versus Premium?
Free supports one region with starter limits for campaign objects. Premium unlocks unlimited regions and expanded campaign capacity. The download itself is free; Premium is an optional in-app purchase.