diff --git a/apps/popconlaunch/boot.js b/apps/popconlaunch/boot.js
index eb3f18e1b..9124344b2 100644
--- a/apps/popconlaunch/boot.js
+++ b/apps/popconlaunch/boot.js
@@ -1,6 +1,7 @@
 {
     var oldRead_1 = require("Storage").readJSON;
-    var monthAgo_1 = Date.now() - 1000 * 86400 * 28;
+    var oneMonth_1 = 1000 * 86400 * 28;
+    var monthAgo_1 = Date.now() - oneMonth_1;
     var cache_1;
     var ensureCache_1 = function () {
         if (!cache_1) {
@@ -10,8 +11,20 @@
         }
         return cache_1;
     };
-    var saveCache_1 = function (orderChanged) {
-        require("Storage").writeJSON("popcon.cache.json", cache_1);
+    var trimCache_1 = function (cache) {
+        var threeMonthsBack = Date.now() - oneMonth_1 * 3;
+        var del = [];
+        for (var k in cache)
+            if (cache[k].last < threeMonthsBack)
+                del.push(k);
+        for (var _i = 0, del_1 = del; _i < del_1.length; _i++) {
+            var k = del_1[_i];
+            delete cache[k];
+        }
+    };
+    var saveCache_1 = function (cache, orderChanged) {
+        trimCache_1(cache);
+        require("Storage").writeJSON("popcon.cache.json", cache);
         if (orderChanged) {
             var info = oldRead_1("popcon.info", true);
             info.cacheBuster = !info.cacheBuster;
@@ -74,7 +87,7 @@
             ent.pop++;
             ent.last = Date.now();
             var orderChanged = sortCache_1();
-            saveCache_1(orderChanged);
+            saveCache_1(cache_3, orderChanged);
         }
         return oldLoad_1(src);
     };
diff --git a/apps/popconlaunch/boot.ts b/apps/popconlaunch/boot.ts
index a7ac73518..306d4844a 100644
--- a/apps/popconlaunch/boot.ts
+++ b/apps/popconlaunch/boot.ts
@@ -1,9 +1,6 @@
 {
 type Timestamp = number;
-
-const oldRead = require("Storage").readJSON;
-const monthAgo = Date.now() - 1000 * 86400 * 28;
-let cache: undefined | {
+type Cache = {
 	[key: string]: {
 		sortorder: number,
 		pop: number, // amount of launches
@@ -11,6 +8,11 @@ let cache: undefined | {
 	}
 };
 
+const oldRead = require("Storage").readJSON;
+const oneMonth = 1000 * 86400 * 28;
+const monthAgo = Date.now() - oneMonth;
+let cache: undefined | Cache;
+
 const ensureCache = (): NonNull<typeof cache> => {
 	if(!cache){
 		cache = oldRead("popcon.cache.json", true);
@@ -20,7 +22,19 @@ const ensureCache = (): NonNull<typeof cache> => {
 	return cache;
 };
 
-const saveCache = (orderChanged: boolean) => {
+const trimCache = (cache: Cache) => {
+	const threeMonthsBack = Date.now() - oneMonth * 3;
+	const del = [];
+	for(const k in cache)
+		if(cache[k]!.last < threeMonthsBack)
+			del.push(k);
+
+	for(const k of del)
+		delete cache[k];
+};
+
+const saveCache = (cache: Cache, orderChanged: boolean) => {
+	trimCache(cache);
 	require("Storage").writeJSON("popcon.cache.json", cache);
 	if(orderChanged){
 		// ensure launchers reload their caches:
@@ -94,7 +108,7 @@ global.load = (src: string) => {
 		ent.pop++;
 		ent.last = Date.now();
 		const orderChanged = sortCache();
-		saveCache(orderChanged);
+		saveCache(cache, orderChanged);
 	}
 
 	return oldLoad(src);