diff --git a/app/server/routers/learn.ts b/app/server/routers/learn.ts
index c98bbab..8492a75 100644
--- a/app/server/routers/learn.ts
+++ b/app/server/routers/learn.ts
@@ -44,12 +44,14 @@ export const learnRouting = {
     .input(
       z.object({
         name: z.string().min(1).max(100),
-        list: z.array(
-          z.object({
-            vraag: z.string().min(1).max(100),
-            antwoord: z.string().min(1).max(100),
-          }),
-        ),
+        list: z
+          .array(
+            z.object({
+              vraag: z.string().min(1).max(100),
+              antwoord: z.string().min(1).max(100),
+            }),
+          )
+          .max(1500),
         id: z.uuid().optional(),
         language: z.enum(taalSlugsList),
         fromLanguage: z.enum(taalSlugsList),
@@ -57,6 +59,15 @@ export const learnRouting = {
       }),
     )
     .mutation(async ({ input, ctx }) => {
+      const dag = 24 * 60 * 60 * 1000;
+      const limit =
+        Date.now() - ctx.user.createdAt.getTime() < 30 * dag ? 750 : 1500;
+      if (input.list.length > limit) {
+        throw new TRPCError({
+          code: "BAD_REQUEST",
+          message: `Een lijst mag maximaal ${limit} vragen hebben`,
+        });
+      }
       if (!input.id) {
         const list = await ctx.prisma.list.create({
           data: {
diff --git a/app/server/trpc.ts b/app/server/trpc.ts
index 038f7be..df371f3 100644
--- a/app/server/trpc.ts
+++ b/app/server/trpc.ts
@@ -55,6 +55,7 @@ const withResolvedUser = t.middleware(async ({ ctx, next, path }) => {
       banned: true,
       forumBanned: true,
       theme: true,
+      createdAt: true,
     },
   });
 
diff --git a/tests/trpc.endpoints.test.ts b/tests/trpc.endpoints.test.ts
index a476a80..5f8b4e8 100644
--- a/tests/trpc.endpoints.test.ts
+++ b/tests/trpc.endpoints.test.ts
@@ -261,6 +261,53 @@ describe("tRPC endpoints (integration)", () => {
         expect(updated.listItems[0].vraag).toBe("vraag2");
         expect(updated.listItems[0].antwoord).toBe("antwoord2");
       });
+
+      describe("item cap", () => {
+        const items = (n: number) =>
+          Array.from({ length: n }, (_, i) => ({
+            vraag: `v${i}`,
+            antwoord: `a${i}`,
+          }));
+        const save = (
+          caller: ReturnType<typeof makeCaller>["caller"],
+          n: number,
+        ) =>
+          caller.learn.upsertList({
+            name: `cap-${Date.now()}`,
+            list: items(n),
+            language: TaalSlugEnum.NL,
+            fromLanguage: TaalSlugEnum.EN,
+            toLanguage: TaalSlugEnum.NL,
+          });
+
+        it("new accounts 750 words max", async () => {
+          const user = await createTestUser();
+          const { caller } = makeCaller({ id: user.id });
+
+          const created = await save(caller, 750);
+          createdListIds.add(created.id);
+          expect(created.listItems.length).toBe(750);
+
+          await expect(save(caller, 751)).rejects.toThrow("maximaal 750");
+        });
+
+        it("old accounts 1.5K words max", async () => {
+          const user = await createTestUser();
+          await prisma.user.update({
+            where: { id: user.id },
+            data: {
+              createdAt: new Date(Date.now() - 31 * 24 * 60 * 60 * 1000),
+            },
+          });
+          const { caller } = makeCaller({ id: user.id });
+
+          const created = await save(caller, 1500);
+          createdListIds.add(created.id);
+          expect(created.listItems.length).toBe(1500);
+
+          await expect(save(caller, 1501)).rejects.toThrow();
+        });
+      });
     });
 
     it("get the users lists", async () => {