diff --git a/README.md b/README.md
index 0f5b45d..8b04227 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# wohnungsdidi
+# lazyflat
 
 Combined deployment of **flat-alert** (reliable scraper) and **flat-apply**
 (experimental auto‑applier) behind a single authenticated web UI.
@@ -51,7 +51,7 @@ Because `apply/` is still experimental, the system is hardened around it:
 
 ## Deployment on Coolify
 
-1. **Create repo**: push this monorepo to `ssh://git@git.moritz.run:2222/moritz/wohnungsdidi.git`.
+1. **Create repo**: push this monorepo to `ssh://git@git.moritz.run:2222/moritz/lazyflat.git`.
 2. **New Coolify resource** → *Docker Compose* → point it at this repo. Coolify
    will read `docker-compose.yml` and deploy all three services on one network.
 3. **Domain**: set `flat.lab.moritz.run` on the `web` service only. Coolify
diff --git a/alert/main.py b/alert/main.py
index 204d4ee..f73c811 100644
--- a/alert/main.py
+++ b/alert/main.py
@@ -87,7 +87,7 @@ class FlatAlerter:
 
 
 if __name__ == "__main__":
-    logger.info("starting wohnungsdidi alert service")
+    logger.info("starting lazyflat alert service")
     alerter = FlatAlerter()
     while True:
         try:
diff --git a/apply/main.py b/apply/main.py
index 9de9425..059b7c6 100644
--- a/apply/main.py
+++ b/apply/main.py
@@ -82,7 +82,7 @@ async def lifespan(_app: FastAPI):
     yield
 
 
-app = FastAPI(lifespan=lifespan, title="wohnungsdidi-apply", docs_url=None, redoc_url=None)
+app = FastAPI(lifespan=lifespan, title="lazyflat-apply", docs_url=None, redoc_url=None)
 
 
 @app.get("/health")
diff --git a/docker-compose.yml b/docker-compose.yml
index 43ca255..0fe4cc3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,7 +1,7 @@
 services:
   web:
     build: ./web
-    container_name: wohnungsdidi-web
+    container_name: lazyflat-web
     restart: unless-stopped
     depends_on:
       apply:
@@ -25,15 +25,13 @@ services:
       - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY:-}
       - ANTHROPIC_MODEL=${ANTHROPIC_MODEL:-claude-haiku-4-5-20251001}
     volumes:
-      # Legacy volume name — kept so Coolify reuses the existing data volume
-      # after the rename from lazyflat → wohnungsdidi.
       - lazyflat_data:/data
     expose:
       - "8000"
 
   apply:
     build: ./apply
-    container_name: wohnungsdidi-apply
+    container_name: lazyflat-apply
     restart: unless-stopped
     expose:
       - "8000"
@@ -47,7 +45,7 @@ services:
 
   alert:
     build: ./alert
-    container_name: wohnungsdidi-alert
+    container_name: lazyflat-alert
     restart: unless-stopped
     depends_on:
       web:
diff --git a/web/app.py b/web/app.py
index 62f1d9a..b7918f7 100644
--- a/web/app.py
+++ b/web/app.py
@@ -1,5 +1,5 @@
 """
-wohnungsdidi web app.
+lazyflat web app.
 
 Tabs:
 - /                           → Wohnungen
@@ -54,7 +54,7 @@ async def lifespan(_app: FastAPI):
     yield
 
 
-app = FastAPI(lifespan=lifespan, title="wohnungsdidi", docs_url=None, redoc_url=None, openapi_url=None)
+app = FastAPI(lifespan=lifespan, title="lazyflat", docs_url=None, redoc_url=None, openapi_url=None)
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
 
diff --git a/web/db.py b/web/db.py
index ec3d398..3e01c95 100644
--- a/web/db.py
+++ b/web/db.py
@@ -1,5 +1,5 @@
 """
-SQLite data layer for wohnungsdidi.
+SQLite data layer for lazyflat.
 
 Multi-user: users, per-user profiles/filters/notifications/preferences.
 All per-user rows are 1:1 with users. Errors and forensics are retained
diff --git a/web/enrichment.py b/web/enrichment.py
index cd6fdcd..0b6e00f 100644
--- a/web/enrichment.py
+++ b/web/enrichment.py
@@ -127,7 +127,7 @@ def _download_images(flat_id: str, urls: list[str], referer: str) -> int:
             r = requests.get(
                 raw_url,
                 headers={"Referer": referer,
-                         "User-Agent": "Mozilla/5.0 (wohnungsdidi enricher)"},
+                         "User-Agent": "Mozilla/5.0 (lazyflat enricher)"},
                 timeout=IMAGE_TIMEOUT,
                 stream=True,
             )
diff --git a/web/notifications.py b/web/notifications.py
index 0320bf9..59268ea 100644
--- a/web/notifications.py
+++ b/web/notifications.py
@@ -72,14 +72,14 @@ def on_match(user_id: int, flat: dict) -> None:
     body = f"Neue passende Wohnung: {addr}\nMiete: {rent} €\nZimmer: {rooms}\n{link}"
     md = (f"*Neue passende Wohnung*\n[{addr}]({link})\n"
           f"Miete: {rent} € · Zimmer: {rooms}\n{PUBLIC_URL}")
-    notify_user(user_id, "match", subject="[wohnungsdidi] passende Wohnung", body_plain=body, body_markdown=md)
+    notify_user(user_id, "match", subject="[lazyflat] passende Wohnung", body_plain=body, body_markdown=md)
 
 
 def on_apply_ok(user_id: int, flat: dict, message: str) -> None:
     addr = flat.get("address") or flat.get("link")
     body = f"Bewerbung erfolgreich: {addr}\n{message}"
     md = f"*Bewerbung erfolgreich*\n{addr}\n{message}"
-    notify_user(user_id, "apply_ok", subject="[wohnungsdidi] Bewerbung OK", body_plain=body, body_markdown=md)
+    notify_user(user_id, "apply_ok", subject="[lazyflat] Bewerbung OK", body_plain=body, body_markdown=md)
 
 
 def on_apply_fail(user_id: int, flat: dict, message: str) -> None:
@@ -87,5 +87,5 @@ def on_apply_fail(user_id: int, flat: dict, message: str) -> None:
     body = f"Bewerbung fehlgeschlagen: {addr}\n{message}\n{PUBLIC_URL}/bewerbungen"
     md = (f"*Bewerbung fehlgeschlagen*\n{addr}\n{message}\n"
           f"[Bewerbungen ansehen]({PUBLIC_URL}/bewerbungen)")
-    notify_user(user_id, "apply_fail", subject="[wohnungsdidi] Bewerbung fehlgeschlagen",
+    notify_user(user_id, "apply_fail", subject="[lazyflat] Bewerbung fehlgeschlagen",
                 body_plain=body, body_markdown=md)
diff --git a/web/routes/admin.py b/web/routes/admin.py
index 62cbeab..d49a84b 100644
--- a/web/routes/admin.py
+++ b/web/routes/admin.py
@@ -136,7 +136,7 @@ def tab_logs_export(request: Request):
             e["ip"],
         ])
     body = buf.getvalue().encode("utf-8")
-    filename = "wohnungsdidi-protokoll"
+    filename = "lazyflat-protokoll"
     if q.get("from"): filename += f"-{q['from']}"
     if q.get("to"):   filename += f"-bis-{q['to']}"
     filename += ".csv"
diff --git a/web/routes/bewerbungen.py b/web/routes/bewerbungen.py
index ad9f1d9..3da26ef 100644
--- a/web/routes/bewerbungen.py
+++ b/web/routes/bewerbungen.py
@@ -43,7 +43,7 @@ def bewerbung_zip(request: Request, app_id: int):
     with zipfile.ZipFile(buf, "w", compression=zipfile.ZIP_DEFLATED) as zf:
         zf.writestr(
             "README.txt",
-            f"wohnungsdidi application report\n"
+            f"lazyflat application report\n"
             f"application_id={a['id']}\n"
             f"flat_id={a['flat_id']}\n"
             f"provider={a['provider']}\n"
@@ -95,7 +95,7 @@ def bewerbung_zip(request: Request, app_id: int):
                 zf.writestr(f"snapshots/{idx:02d}_{label}.html", html)
 
     buf.seek(0)
-    filename = f"wohnungsdidi-report-{a['id']}.zip"
+    filename = f"lazyflat-report-{a['id']}.zip"
     return StreamingResponse(
         buf, media_type="application/zip",
         headers={"Content-Disposition": f'attachment; filename="{filename}"'},
diff --git a/web/settings.py b/web/settings.py
index 343450b..5df1d2e 100644
--- a/web/settings.py
+++ b/web/settings.py
@@ -25,7 +25,7 @@ AUTH_PASSWORD_HASH: str = _required("AUTH_PASSWORD_HASH")
 
 # --- Session cookie -----------------------------------------------------------
 SESSION_SECRET: str = getenv("SESSION_SECRET") or secrets.token_urlsafe(48)
-SESSION_COOKIE_NAME: str = "wohnungsdidi_session"
+SESSION_COOKIE_NAME: str = "lazyflat_session"
 SESSION_MAX_AGE_SECONDS: int = int(getenv("SESSION_MAX_AGE_SECONDS", str(60 * 60 * 24 * 7)))
 COOKIE_SECURE: bool = getenv("COOKIE_SECURE", "true").lower() in ("true", "1", "yes", "on")
 
@@ -43,8 +43,6 @@ ALERT_SCRAPE_INTERVAL_SECONDS: int = int(getenv("ALERT_SCRAPE_INTERVAL_SECONDS",
 # --- Storage ------------------------------------------------------------------
 DATA_DIR: Path = Path(getenv("DATA_DIR", "/data"))
 DATA_DIR.mkdir(parents=True, exist_ok=True)
-# Legacy filename — kept so existing data under /data/lazyflat.sqlite stays
-# reachable across the rename to wohnungsdidi. Not user-facing.
 DB_PATH: Path = DATA_DIR / "lazyflat.sqlite"
 
 # Retention (errors / audit / application forensics). Default 14 days.
diff --git a/web/static/app.css b/web/static/app.css
index 4d1fef6..0382c07 100644
--- a/web/static/app.css
+++ b/web/static/app.css
@@ -1,4 +1,4 @@
-/* wohnungsdidi — site styling.
+/* lazyflat — site styling.
    Imported via <link> from base.html. Tailwind utilities (via CDN) handle
    layout/spacing; this file owns our design tokens and component classes. */
 
diff --git a/web/templates/_layout.html b/web/templates/_layout.html
index 2969efa..418414f 100644
--- a/web/templates/_layout.html
+++ b/web/templates/_layout.html
@@ -8,7 +8,7 @@
     <div class="max-w-6xl mx-auto px-6 py-3 flex items-center justify-between">
         <div class="flex items-center gap-3">
             <span class="brand-dot"><img src="/static/didi.webp" alt=""></span>
-            <h1 class="text-xl font-semibold">wohnungsdidi</h1>
+            <h1 class="text-xl font-semibold">lazyflat</h1>
         </div>
         <div class="flex items-center gap-4 text-sm">
             <span class="text-slate-500">{{ user.username }}{% if is_admin %} · <span class="chip chip-info">Administrator</span>{% endif %}</span>
diff --git a/web/templates/base.html b/web/templates/base.html
index 251e485..6e395a9 100644
--- a/web/templates/base.html
+++ b/web/templates/base.html
@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta name="robots" content="noindex, nofollow">
     <link rel="icon" type="image/webp" href="/static/didi.webp">
-    <title>{% block title %}wohnungsdidi{% endblock %}</title>
+    <title>{% block title %}lazyflat{% endblock %}</title>
     <script src="https://cdn.tailwindcss.com"></script>
     <script src="https://unpkg.com/htmx.org@2.0.3"></script>
     <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
diff --git a/web/templates/login.html b/web/templates/login.html
index 3b8b6a3..6ff81be 100644
--- a/web/templates/login.html
+++ b/web/templates/login.html
@@ -5,7 +5,7 @@
         <div class="flex items-center gap-3 mb-6">
             <span class="brand-dot"><img src="/static/didi.webp" alt=""></span>
             <div>
-                <h1 class="text-2xl font-semibold leading-tight">wohnungsdidi</h1>
+                <h1 class="text-2xl font-semibold leading-tight">lazyflat</h1>
                 <p class="text-sm text-slate-500">Anmeldung erforderlich</p>
             </div>
         </div>