.app
1 claimant
0 primary
1 secondary
secondary-only
SWH popularity
From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.
225.1K
total occurrences
62.3K
since 2019 (27.7%)
1992–2023
years active
Case variants in archive: .app (222.1K), .APP (2.6K), .App (449) — aggregated above.
Attribution status
This extension is attributed to Erlang — every claim across all sources (including secondary ones) points to a single language.
Authoritative sources: △ Linguist · secondary ✗ Pygments · no claim ✗ Wikidata · no claim ✗ Wikipedia · no claim
Claimants (1)
Languages that list
.app among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Erlang | linguist | secondary |
Wikidata says… (13)
File formats, image formats, audio codecs and other non-PL
entities that claim
.app on Wikidata
(property P1195) or in the Wikipedia infobox.
Source: data/derived/external_extension_index.csv.
Click Use as new PL on any row to open the
Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata
URL, and this extension — one submission creates the PL + claim.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| App Q122212378 file format for HarmonyOS software | package manager; package format | — | — | — | Use as new PL ↗ |
| APP raster bitmap Q105858489 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| Atari V4E GFA Basic v3.6 executable Q105854321 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
Disambiguation rules (1)
Linguist heuristics that decide, by content, which language a
.app file actually is.| Rule | Predicts | Kind | Predicates (truncated) |
|---|---|---|---|
h/linguist/.app/0 | Erlang | predicates | [{"kind": "any", "regexes": ["^\\{\\s*(?:application|'application')\\s*,\\s*(?:[a-z]+[\\w@]*|'[^']+')\\s*,\\s*\\[(?:.|[\\r\\n])*\\]\\s*\\}\\.[ \\t]*$"]}] |
SWH-mined examples (0)
No archived examples for .app in our local mirror yet.