Erini translates anglicised place names back into authentic Irish, applies centuries of grammar rules, and maps your discoveries by terrain. Turn every road sign into a linguistic archaeology lesson.
Download EriniChoose the learning path that matches your interest in Celtic toponymy and linguistic heritage
All features included with Erini download. No subscriptions required. Codes unlock specific tutorials within app.
Erini's parser identifies authentic Irish morphemes hidden inside modern anglicised spellings. When you input "Knockduff," the engine recognizes "knock" as a phonetic rendering of "cnoc" (hill) and "duff" as "dubh" (black), then reconstructs the grammatically correct "Cnoc dubh."
The Composer reverses this process: select a landscape noun like "baile" (town) and a qualifier like "mór" (big), and Erini applies genuine Irish grammatical transformations—lenition turns "mór" into "mhór" in genitive context—then ages the construction forward through centuries of anglicisation to produce both "Baile Mór" and its modern spelling "Ballymore."
Regional tradition settings adjust for dialectical differences: the same name constructed in Scottish Gaelic mode applies different mutation rules and produces distinct anglicised variants compared to Irish or Manx mode. Every output includes full explanation of which grammatical and spelling rules fired during generation.
Type any anglicised place name and watch Erini decompose it into color-coded Irish elements. The parser ranks multiple possible readings by confidence and shows which grammatical structures create the modern spelling.
Build authentic Irish place names from scratch by selecting landscape nouns and qualifiers. Erini applies real-time grammatical transformations and shows both the Irish form and its anglicised evolution with full rule explanations.
Every decoded or composed name saves to your personal Land, automatically organized into ten terrain categories: hilltop, ridge, ford, river mouth, wood edge, ringfort, church site, holy well, island, and plain.
Browse a searchable database of every Irish place name element with scholarly definitions, usage notes, attested historical examples, and lists of anglicised spelling variants across all three Celtic regions.
Test your growing knowledge with real attested place names. Erini presents actual historical names and challenges you to identify the correct terrain type and linguistic elements before revealing the authentic translation.
Toggle between Irish, Scottish Gaelic, and Manx modes to see how identical names would be spelled differently in each tradition. The same linguistic components produce distinct anglicised outcomes based on regional phonetic history.
iOS 2.0 • Free Download • Install in under 2 minutes
Download EriniRequires iOS. No subscriptions or in-app purchases. Updated October 2026 with layout corrections. Suitable for linguistics students, Celtic history enthusiasts, and curious travelers.