diff --git a/core/archipelago/src/api/rpc/tor/handlers.rs b/core/archipelago/src/api/rpc/tor/handlers.rs
index 3001f00e..d45caa5f 100644
--- a/core/archipelago/src/api/rpc/tor/handlers.rs
+++ b/core/archipelago/src/api/rpc/tor/handlers.rs
@@ -4,9 +4,21 @@ use std::time::{SystemTime, UNIX_EPOCH};
 
 impl RpcHandler {
     /// List all configured hidden services with their .onion addresses.
+    /// Services for known-but-uninstalled apps are hidden (issue #79).
     pub(in crate::api::rpc) async fn handle_tor_list_services(&self) -> Result<serde_json::Value> {
         let config_dir = self.config.data_dir.join("tor-config");
-        let services = list_services(&config_dir).await?;
+        let (data, _) = self.state_manager.get_snapshot().await;
+        let mut apps = AppInstallState {
+            known: Default::default(),
+            installed: Default::default(),
+        };
+        for (id, pkg) in &data.package_data {
+            apps.known.insert(id.clone());
+            if pkg.installed.is_some() {
+                apps.installed.insert(id.clone());
+            }
+        }
+        let services = list_services(&config_dir, Some(&apps)).await?;
         let tor_running = check_tor_running().await;
         Ok(serde_json::json!({ "services": services, "tor_running": tor_running }))
     }
diff --git a/core/archipelago/src/api/rpc/tor/mod.rs b/core/archipelago/src/api/rpc/tor/mod.rs
index 7b596ae2..0e3d60d4 100644
--- a/core/archipelago/src/api/rpc/tor/mod.rs
+++ b/core/archipelago/src/api/rpc/tor/mod.rs
@@ -228,15 +228,67 @@ pub(super) async fn sync_all_hostname_copies(config: &ServicesConfig) {
 
 // ─── Service Listing ─────────────────────────────────────────────
 
-pub(super) async fn list_services(config_dir: &std::path::Path) -> Result<Vec<TorService>> {
+/// Which packages the node knows about and which are installed — used to
+/// hide hidden services for apps that aren't installed. ISO first-boot used
+/// to pre-bake onions for a fixed app list (bitcoin/electrumx/lnd/btcpay/
+/// mempool/fedimint), so fresh nodes showed Tor sites for apps that were
+/// never installed (issue #79).
+pub(super) struct AppInstallState {
+    pub known: std::collections::HashSet<String>,
+    pub installed: std::collections::HashSet<String>,
+}
+
+/// Package ids a Tor service name may correspond to. Service names predate
+/// the catalog app ids (the ISO baked "bitcoin"/"btcpay"), so one service
+/// can map to several package ids.
+fn service_alias_candidates(name: &str) -> Vec<&str> {
+    match name {
+        "bitcoin" | "bitcoin-knots" | "bitcoin-core" => {
+            vec!["bitcoin", "bitcoin-knots", "bitcoin-core"]
+        }
+        "electrumx" | "electrs" | "mempool-electrs" => {
+            vec!["electrumx", "electrs", "mempool-electrs"]
+        }
+        "btcpay" | "btcpay-server" | "btcpayserver" => {
+            vec!["btcpay", "btcpay-server", "btcpayserver"]
+        }
+        "mempool" | "mempool-web" => vec!["mempool", "mempool-web"],
+        other => vec![other],
+    }
+}
+
+impl AppInstallState {
+    /// A service is listed unless it names a known-but-uninstalled app.
+    /// The node's own service, the content relay, and custom user-created
+    /// services (names matching no catalog package) always show.
+    fn service_visible(&self, name: &str) -> bool {
+        if name == "archipelago" || name == "relay" {
+            return true;
+        }
+        let candidates = service_alias_candidates(name);
+        if !candidates.iter().any(|c| self.known.contains(*c)) {
+            return true; // not an app — custom hidden service
+        }
+        candidates.iter().any(|c| self.installed.contains(*c))
+    }
+}
+
+pub(super) async fn list_services(
+    config_dir: &std::path::Path,
+    apps: Option<&AppInstallState>,
+) -> Result<Vec<TorService>> {
     let base = detect_hidden_service_base();
     let config = load_services_config(config_dir).await;
     let mut services = Vec::new();
     let mut seen = std::collections::HashSet::new();
+    let visible = |name: &str| apps.map(|a| a.service_visible(name)).unwrap_or(true);
 
     for entry in &config.services {
-        let onion = read_onion_address(&entry.name).await;
         seen.insert(entry.name.clone());
+        if !visible(&entry.name) {
+            continue;
+        }
+        let onion = read_onion_address(&entry.name).await;
         services.push(TorService {
             name: entry.name.clone(),
             local_port: entry.local_port,
@@ -260,9 +312,12 @@ pub(super) async fn list_services(config_dir: &std::path::Path) -> Result<Vec<To
                     if seen.contains(&service_name) {
                         continue;
                     }
+                    seen.insert(service_name.clone());
+                    if !visible(&service_name) {
+                        continue;
+                    }
                     let onion = read_onion_address(&service_name).await;
                     let port = known_service_port(&service_name);
-                    seen.insert(service_name.clone());
                     let is_proto = is_protocol_service(&service_name);
                     services.push(TorService {
                         name: service_name,
diff --git a/image-recipe/_archived/build-auto-installer-iso.sh b/image-recipe/_archived/build-auto-installer-iso.sh
index bdcd18ed..823c358e 100755
--- a/image-recipe/_archived/build-auto-installer-iso.sh
+++ b/image-recipe/_archived/build-auto-installer-iso.sh
@@ -1658,17 +1658,17 @@ LOG="/var/log/archipelago-tor.log"
 
 mkdir -p "$ARCHY_TOR_DIR" "$TOR_CONFIG_DIR"
 
-# Write services.json for the backend to read
+# First boot only: seed services.json + torrc. The unit runs on EVERY boot
+# (oneshot, multi-user.target), and rewriting these unconditionally clobbered
+# hidden services the backend added after app installs. Only the node's own
+# service is pre-baked — apps get their hidden service created on install
+# (auto_add_tor_service / tor.create-service), never pre-created for apps
+# that may never be installed (issue #79).
+if [ ! -f "$TOR_CONFIG_DIR/services.json" ]; then
 cat > "$ARCHY_TOR_DIR/services.json" <<TORJSON
 {
   "services": [
-    {"name": "archipelago", "local_port": 80, "enabled": true},
-    {"name": "bitcoin", "local_port": 8333, "enabled": true},
-    {"name": "electrumx", "local_port": 50001, "enabled": true},
-    {"name": "lnd", "local_port": 9735, "enabled": true},
-    {"name": "btcpay", "local_port": 23000, "enabled": true},
-    {"name": "mempool", "local_port": 4080, "enabled": true},
-    {"name": "fedimint", "local_port": 8175, "enabled": true}
+    {"name": "archipelago", "local_port": 80, "enabled": true}
   ]
 }
 TORJSON
@@ -1688,33 +1688,16 @@ SocksPolicy reject *
 HiddenServiceDir $TOR_DIR/hidden_service_archipelago
 HiddenServicePort 80 127.0.0.1:80
 
-HiddenServiceDir $TOR_DIR/hidden_service_bitcoin
-HiddenServicePort 8333 127.0.0.1:8333
-HiddenServicePort 8332 127.0.0.1:8332
-
-HiddenServiceDir $TOR_DIR/hidden_service_electrumx
-HiddenServicePort 50001 127.0.0.1:50001
-
-HiddenServiceDir $TOR_DIR/hidden_service_lnd
-HiddenServicePort 9735 127.0.0.1:9735
-HiddenServicePort 8080 127.0.0.1:8080
-
-HiddenServiceDir $TOR_DIR/hidden_service_btcpay
-HiddenServicePort 23000 127.0.0.1:23000
-
-HiddenServiceDir $TOR_DIR/hidden_service_mempool
-HiddenServicePort 4080 127.0.0.1:4080
-
-HiddenServiceDir $TOR_DIR/hidden_service_fedimint
-HiddenServicePort 8175 127.0.0.1:8175
-
 HiddenServiceDir $TOR_DIR/hidden_service_relay
 HiddenServicePort 7777 127.0.0.1:7777
 TORRC
+else
+    echo "$(date): tor already initialized — leaving services.json/torrc alone" >> "$LOG"
+fi
 
 # Create hidden service dirs with correct ownership and permissions (700, not 750)
 # Tor refuses to start if permissions are too permissive
-for svc in archipelago bitcoin electrumx lnd btcpay mempool fedimint relay; do
+for svc in archipelago relay; do
     mkdir -p "$TOR_DIR/hidden_service_$svc"
     chown debian-tor:debian-tor "$TOR_DIR/hidden_service_$svc"
     chmod 700 "$TOR_DIR/hidden_service_$svc"
@@ -1759,7 +1742,7 @@ done
 # Sync hostnames to backend-readable directory
 HOSTNAMES_DIR="/var/lib/archipelago/tor-hostnames"
 mkdir -p "$HOSTNAMES_DIR"
-for svc in archipelago bitcoin electrumx lnd btcpay mempool fedimint relay; do
+for svc in archipelago relay; do
     if [ -f "$TOR_DIR/hidden_service_${svc}/hostname" ]; then
         cp "$TOR_DIR/hidden_service_${svc}/hostname" "$HOSTNAMES_DIR/$svc"
         echo "$(date): Synced hostname: $svc" >> "$LOG"