diff --git a/backend/src/controllers/friend.controller.ts b/backend/src/controllers/friend.controller.ts
index e6b426b..5dc2094 100644
--- a/backend/src/controllers/friend.controller.ts
+++ b/backend/src/controllers/friend.controller.ts
@@ -2,6 +2,7 @@ import type { Response } from "express";
 import { prisma } from "../index";
 import type { AppRequest } from "../types/context";
 import { friendRequestSchema, friendResponseSchema } from "../validators/friend.validators";
+import { checkAndGrantRewards } from "../services/reward.service";
 
 // Envoyer une demande d'ami
 export async function sendRequest(req: AppRequest, res: Response): Promise<void> {
@@ -71,6 +72,15 @@ export async function respondToRequest(req: AppRequest, res: Response): Promise<
       sender: { select: { id: true, username: true, avatar: true } },
     },
   });
+
+  // Déclenche les récompenses pour les deux parties si accepté
+  if (parsed.data.status === "ACCEPTED") {
+    await Promise.all([
+      checkAndGrantRewards(req.user!.id),
+      checkAndGrantRewards(updated.sender.id),
+    ]);
+  }
+
   res.json(updated);
 }
 
diff --git a/backend/src/controllers/history.controller.ts b/backend/src/controllers/history.controller.ts
index e877d37..3583eb5 100644
--- a/backend/src/controllers/history.controller.ts
+++ b/backend/src/controllers/history.controller.ts
@@ -6,6 +6,7 @@ import {
   completeHistorySchema,
   startHistorySchema,
 } from "../validators/history.validators";
+import { checkAndGrantRewards } from "../services/reward.service";
 
 // Démarre une session d'entraînement
 export async function start(req: AppRequest, res: Response): Promise<void> {
@@ -91,7 +92,8 @@ export async function complete(req: AppRequest, res: Response): Promise<void> {
     },
   });
 
-  res.json(completed);
+  const newRewards = await checkAndGrantRewards(req.user!.id);
+  res.json({ ...completed, newRewards });
 }
 
 // Historique de l'utilisateur connecté
diff --git a/backend/src/controllers/reward.controller.ts b/backend/src/controllers/reward.controller.ts
new file mode 100644
index 0000000..86ed56a
--- /dev/null
+++ b/backend/src/controllers/reward.controller.ts
@@ -0,0 +1,19 @@
+import type { Response } from "express";
+import { prisma } from "../index";
+import type { AppRequest } from "../types/context";
+
+// Liste toutes les récompenses disponibles
+export async function getAll(_req: AppRequest, res: Response): Promise<void> {
+  const rewards = await prisma.reward.findMany({ orderBy: { name: "asc" } });
+  res.json(rewards);
+}
+
+// Récompenses débloquées par l'utilisateur connecté
+export async function getMyRewards(req: AppRequest, res: Response): Promise<void> {
+  const rewards = await prisma.userReward.findMany({
+    where: { userId: req.user!.id },
+    include: { reward: true },
+    orderBy: { earnedAt: "desc" },
+  });
+  res.json(rewards);
+}
diff --git a/backend/src/db/seed.ts b/backend/src/db/seed.ts
index 004b636..00e3d11 100644
--- a/backend/src/db/seed.ts
+++ b/backend/src/db/seed.ts
@@ -98,6 +98,20 @@ async function main() {
   });
   console.log("✅ Programme : Cardio Intermédiaire");
 
+  // ── Récompenses ───────────────────────────────────────────────────────────
+  const rewardsData = [
+    { name: "Premier pas", description: "Terminer son premier programme.", condition: "first_program" },
+    { name: "Régulier", description: "Terminer 5 programmes.", condition: "five_programs" },
+    { name: "Acharné", description: "Terminer 10 programmes.", condition: "ten_programs" },
+    { name: "Premier ami", description: "Avoir son premier ami.", condition: "first_friend" },
+    { name: "Populaire", description: "Avoir 5 amis.", condition: "five_friends" },
+    { name: "Esprit d'équipe", description: "Rejoindre un groupe.", condition: "first_group" },
+    { name: "Créateur", description: "Créer son premier programme.", condition: "first_program_created" },
+  ];
+
+  await prisma.reward.createMany({ data: rewardsData, skipDuplicates: true });
+  console.log(`✅ ${rewardsData.length} récompenses`);
+
   console.log("🎉 Seed terminé.");
 }
 
diff --git a/backend/src/index.ts b/backend/src/index.ts
index 7747036..e06cadd 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -11,6 +11,7 @@ import programRoutes from "./routes/program.routes";
 import historyRoutes from "./routes/history.routes";
 import friendRoutes from "./routes/friend.routes";
 import groupRoutes from "./routes/group.routes";
+import rewardRoutes from "./routes/reward.routes";
 
 const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
 const app = express();
@@ -42,6 +43,7 @@ app.use("/api/programs", programRoutes);
 app.use("/api/history", historyRoutes);
 app.use("/api/friends", friendRoutes);
 app.use("/api/groups", groupRoutes);
+app.use("/api/rewards", rewardRoutes);
 
 app.get("/health", (_req, res) => {
   res.json({ status: "ok" });
diff --git a/backend/src/routes/reward.routes.ts b/backend/src/routes/reward.routes.ts
new file mode 100644
index 0000000..4ceae55
--- /dev/null
+++ b/backend/src/routes/reward.routes.ts
@@ -0,0 +1,10 @@
+import { Router } from "express";
+import { getAll, getMyRewards } from "../controllers/reward.controller";
+import { requireAuth } from "../middlewares/auth";
+
+const router = Router();
+
+router.get("/", requireAuth, getAll);
+router.get("/me", requireAuth, getMyRewards);
+
+export default router;
diff --git a/backend/src/services/reward.service.ts b/backend/src/services/reward.service.ts
new file mode 100644
index 0000000..3a3229d
--- /dev/null
+++ b/backend/src/services/reward.service.ts
@@ -0,0 +1,76 @@
+import { prisma } from "../index";
+
+// Conditions disponibles — à étendre librement
+const CONDITIONS: Record<string, (userId: string) => Promise<boolean>> = {
+  first_program: async (userId) => {
+    const count = await prisma.history.count({
+      where: { userId, completedAt: { not: null } },
+    });
+    return count >= 1;
+  },
+  five_programs: async (userId) => {
+    const count = await prisma.history.count({
+      where: { userId, completedAt: { not: null } },
+    });
+    return count >= 5;
+  },
+  ten_programs: async (userId) => {
+    const count = await prisma.history.count({
+      where: { userId, completedAt: { not: null } },
+    });
+    return count >= 10;
+  },
+  first_friend: async (userId) => {
+    const count = await prisma.friendRequest.count({
+      where: {
+        status: "ACCEPTED",
+        OR: [{ senderId: userId }, { receiverId: userId }],
+      },
+    });
+    return count >= 1;
+  },
+  five_friends: async (userId) => {
+    const count = await prisma.friendRequest.count({
+      where: {
+        status: "ACCEPTED",
+        OR: [{ senderId: userId }, { receiverId: userId }],
+      },
+    });
+    return count >= 5;
+  },
+  first_group: async (userId) => {
+    const count = await prisma.groupMember.count({ where: { userId } });
+    return count >= 1;
+  },
+  first_program_created: async (userId) => {
+    const count = await prisma.program.count({ where: { authorId: userId } });
+    return count >= 1;
+  },
+};
+
+// Vérifie et attribue toutes les récompenses débloquées pour un utilisateur
+export async function checkAndGrantRewards(userId: string): Promise<string[]> {
+  const allRewards = await prisma.reward.findMany();
+  const earned = await prisma.userReward.findMany({
+    where: { userId },
+    select: { rewardId: true },
+  });
+  const earnedIds = new Set(earned.map((r) => r.rewardId));
+
+  const newlyEarned: string[] = [];
+
+  for (const reward of allRewards) {
+    if (earnedIds.has(reward.id!)) continue;
+
+    const checker = CONDITIONS[reward.condition];
+    if (!checker) continue;
+
+    const unlocked = await checker(userId);
+    if (unlocked) {
+      await prisma.userReward.create({ data: { userId, rewardId: reward.id! } });
+      newlyEarned.push(reward.name);
+    }
+  }
+
+  return newlyEarned;
+}