diff --git a/frontend/src/components/Counter.vue b/frontend/src/components/Counter.vue
index 12920b1..4e66023 100644
--- a/frontend/src/components/Counter.vue
+++ b/frontend/src/components/Counter.vue
@@ -15,23 +15,23 @@ import ReverseButton from "@/components/buttons/ReverseButton.vue";
 import StartButton from "@/components/buttons/StartButton.vue";
 import StopButton from "@/components/buttons/StopButton.vue";
 
-import state from "@/state";
-import { formatSeconds, hoursToMilliseconds } from "@/utils";
+import { state } from "@/store";
+import { formatSeconds } from "@/utils";
 
 const nowTime = ref(Date.now());
 const isStopping = ref(false);
 
 const currentDifference = computed(() => {
-  const difference = state.refs.targetDate.value - nowTime.value;
+  const difference = state.targetDate.value - nowTime.value;
   let distance = Math.abs(difference);
   if (difference < 0) {
-    distance *= state.computed.buff.value;
+    distance *= state.buff.value;
   }
-  return Math.sign(difference) * Math.min(distance, state.refs.maxTime.value);
+  return Math.sign(difference) * Math.min(distance, state.maxTime.value);
 });
 
 const isGameOn = computed(() => {
-  return state.refs.isReverseOn.value || currentDifference.value > 500;
+  return state.isReverseOn.value || currentDifference.value > 500;
 });
 
 const view = computed(() => {
@@ -45,7 +45,7 @@ const time = computed(() => {
     const elapsedSeconds = Math.round(elapsedMilliseconds / 1000);
     return formatSeconds(elapsedSeconds);
   } else {
-    const seconds = state.refs.maxTime.value / 1000;
+    const seconds = state.maxTime.value / 1000;
     return formatSeconds(seconds);
   }
 });
@@ -83,33 +83,23 @@ watchEffect(() => {
   }
 });
 
-function increaseMaxTime() {
-  state.refs.maxTime.value = Math.min(state.refs.maxTime.maximum, state.refs.maxTime.value + hoursToMilliseconds(1));
-}
-
-function decreaseMaxTime() {
-  state.refs.maxTime.value = Math.max(state.refs.maxTime.minimum, state.refs.maxTime.value - hoursToMilliseconds(1));
-}
-
 function reverseTime() {
   let difference = currentDifference.value;
-  if (difference > 0) {
-    difference /= state.computed.buff.value;
-  }
-  state.refs.targetDate.value = nowTime.value - difference;
+  (difference > 0) && (difference /= state.buff.value);
+  state.targetDate.value = nowTime.value - difference;
 
-  state.refs.isReverseOn.value = !state.refs.isReverseOn.value;
+  state.isReverseOn.value = !state.isReverseOn.value;
 }
 
 function startGame() {
   nowTime.value = Date.now();
-  state.refs.targetDate.value = nowTime.value + state.refs.maxTime.value;
+  state.targetDate.value = nowTime.value + state.maxTime.value;
 }
 
 function stopGame() {
   isStopping.value = false;
-  state.refs.isReverseOn.value = false;
-  state.refs.targetDate.value = nowTime.value;
+  state.isReverseOn.value = false;
+  state.targetDate.value = nowTime.value;
 }
 
 function toggleStopping() {
@@ -117,12 +107,12 @@ function toggleStopping() {
 }
 
 function nextBuff() {
-  const [buff, prevBuff] = state.nextBuff();
-  const difference = state.refs.targetDate.value - nowTime.value;
+  const [buff, prevBuff] = state.buff.next();
+  const difference = state.targetDate.value - nowTime.value;
   let distance = Math.abs(difference);
   if (difference < 0) {
     distance = distance * prevBuff / buff;
-    state.refs.targetDate.value = nowTime.value - distance;
+    state.targetDate.value = nowTime.value - distance;
   }
 }
 </script>
@@ -133,8 +123,8 @@ function nextBuff() {
     <Block v-if="view==='gameOff'">
       <StartButton @click="startGame" />
       <BuffButton @click="nextBuff" />
-      <IncreaseMaxTimeButton @click="increaseMaxTime" />
-      <DecreaseMaxTimeButton @click="decreaseMaxTime" />
+      <IncreaseMaxTimeButton @click="() => state.maxTime.increment()" />
+      <DecreaseMaxTimeButton @click="() => state.maxTime.decrement()" />
     </Block>
     <Block v-else-if="view==='gameOn'">
       <ReverseButton @click="reverseTime" />
diff --git a/frontend/src/components/buttons/BuffButton.vue b/frontend/src/components/buttons/BuffButton.vue
index 2fde8e9..65ef4b8 100644
--- a/frontend/src/components/buttons/BuffButton.vue
+++ b/frontend/src/components/buttons/BuffButton.vue
@@ -5,10 +5,10 @@ import { computed } from "vue";
 
 import Button from "@/components/Button.vue";
 
-import state from "@/state";
+import { state } from "@/store";
 
 const text = computed(() => {
-  return `${state.computed.buff.value.toFixed(2)}x`;
+  return `${state.buff.value.toFixed(2)}x`;
 });
 </script>
 
diff --git a/frontend/src/components/buttons/DecreaseMaxTimeButton.vue b/frontend/src/components/buttons/DecreaseMaxTimeButton.vue
index 794e912..d84d9b2 100644
--- a/frontend/src/components/buttons/DecreaseMaxTimeButton.vue
+++ b/frontend/src/components/buttons/DecreaseMaxTimeButton.vue
@@ -3,12 +3,12 @@ defineEmits<{ click: [] }>();
 
 import Button from "@/components/Button.vue";
 
-import state from "@/state";
+import { state } from "@/store";
 </script>
 
 <template>
   <Button
-    :disabled="state.refs.maxTime.value === state.refs.maxTime.minimum"
+    :disabled="state.maxTime.value === state.maxTime.minimum"
     @click="$emit('click')"
   >
     <svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
diff --git a/frontend/src/components/buttons/IncreaseMaxTimeButton.vue b/frontend/src/components/buttons/IncreaseMaxTimeButton.vue
index c506bb2..7937073 100644
--- a/frontend/src/components/buttons/IncreaseMaxTimeButton.vue
+++ b/frontend/src/components/buttons/IncreaseMaxTimeButton.vue
@@ -3,12 +3,12 @@ defineEmits<{ click: [] }>();
 
 import Button from "@/components/Button.vue";
 
-import state from "@/state";
+import { state } from "@/store";
 </script>
 
 <template>
   <Button
-    :disabled="state.refs.maxTime.value === state.refs.maxTime.maximum"
+    :disabled="state.maxTime.value === state.maxTime.maximum"
     @click="$emit('click')"
   >
     <svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
diff --git a/frontend/src/components/buttons/ReverseButton.vue b/frontend/src/components/buttons/ReverseButton.vue
index d52da30..827998a 100644
--- a/frontend/src/components/buttons/ReverseButton.vue
+++ b/frontend/src/components/buttons/ReverseButton.vue
@@ -3,15 +3,15 @@ defineEmits<{ click: [] }>();
 
 import Button from "@/components/Button.vue";
 
-import state from "@/state";
+import { state } from "@/store";
 </script>
 
 <template>
   <Button
-    :class="!state.refs.isReverseOn.value && 'suggested'"
+    :class="!state.isReverseOn.value && 'suggested'"
     @click="$emit('click')"
   >
-    <template v-if="state.refs.isReverseOn.value">
+    <template v-if="state.isReverseOn.value">
       <svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
         <path class="background" d="M 17.5,6.5 H 6.5 v 11 h 11 z" fill="none" />
         <path d="M 9.33333 10.3333 H 10.3333 V 11.3333 H 9.33333 V 10.3333 Z" fill="black" />
diff --git a/frontend/src/state.ts b/frontend/src/state.ts
index b3cba6e..a82765a 100644
--- a/frontend/src/state.ts
+++ b/frontend/src/state.ts
@@ -1,110 +1,49 @@
-import { computed, reactive, ref, watch } from "vue";
+import { ref, shallowReactive } from "vue";
 
 import { hoursToMilliseconds } from "@/utils";
 
-export class State {
-  consts = {
-    buffs: Array(1 / 0.05 + 1).fill(undefined).map((_, i) => 1 + Math.round(0.05 * i * 100) / 100),
-  };
-
-  refs = {
-    targetDate: ref(Date.now()),
-    isReverseOn: ref(false),
-    maxTime: reactive({
-      value: hoursToMilliseconds(24),
-      minimum: hoursToMilliseconds(24),
-      maximum: hoursToMilliseconds(72),
-    }),
-    buffIndex: ref(0),
-  };
-
-  computed = {
-    buff: computed(() => {
-      return this.consts.buffs[this.refs.buffIndex.value]!;
-    }),
-  };
+class Buff {
+  value = 1.00;
 
-  nextBuff(): [number, number] {
-    const prevBuff = this.consts.buffs[this.refs.buffIndex.value]!;
-    this.refs.buffIndex.value = (this.refs.buffIndex.value + 1) % this.consts.buffs.length;
-    const buff = this.consts.buffs[this.refs.buffIndex.value]!;
-    return [buff, prevBuff];
+  constructor() {
+    return shallowReactive(this);
   }
 
-  * [Symbol.iterator]() {
-    for (const property in this.refs) {
-      yield [this.refs[property as keyof typeof this.refs], property] as const;
-    }
+  next(): [number, number] {
+    const prev = this.value;
+    this.value = Math.round((this.value + 0.05) * 100) / 100;
+    (this.value > 2.00) && (this.value = 1.00);
+    return [this.value, prev];
   }
 }
 
-const IDB_NAME = "flowey";
-const OBJECT_STORE_NAME = "state";
+class MaxTime {
+  value = hoursToMilliseconds(24);
+  minimum = hoursToMilliseconds(24);
+  maximum = hoursToMilliseconds(72);
 
-class Database {
-  idb: IDBDatabase | null = null;
-  state: State = new State();
-
-  async init() {
-    this.idb = await this.openIndexedBD();
-
-    for (const [ref, property] of this.state) {
-      watch(ref, () => {
-        this.put(ref.value, property);
-      });
-    }
-  };
-
-  put(value: unknown, property: string) {
-    this.idb!
-      .transaction(OBJECT_STORE_NAME, "readwrite")
-      .objectStore(OBJECT_STORE_NAME)
-      .put(value, property);
+  constructor() {
+    return shallowReactive(this);
   }
 
-  private async openIndexedBD() {
-    return new Promise<IDBDatabase>((resolve) => {
-      const request = window.indexedDB.open(IDB_NAME);
-
-      request.onupgradeneeded = (event) => {
-        const idb = (event.target as IDBOpenDBRequest).result;
-        const objectStore = idb.createObjectStore(OBJECT_STORE_NAME);
-
-        objectStore.transaction.oncomplete = () => {
-          const objectStore = idb
-            .transaction(OBJECT_STORE_NAME, "readwrite")
-            .objectStore(OBJECT_STORE_NAME);
-
-          for (const [ref, property] of this.state) {
-            objectStore.put(ref.value, property);
-          }
-        };
-      };
-
-      request.onsuccess = (event) => {
-        const idb = (event.target as IDBOpenDBRequest).result;
-        const objectStore = idb
-          .transaction(OBJECT_STORE_NAME, "readonly")
-          .objectStore(OBJECT_STORE_NAME);
-
-        for (const [ref, property] of this.state) {
-          objectStore.get(property).onsuccess = (event) => {
-            const value: unknown = (event.target as IDBRequest).result;
-            if (value !== undefined && typeof value === typeof ref.value) {
-              ref.value = value as typeof ref.value;
-              return;
-            }
-            this.put(ref.value, property);
-          };
-        }
+  increment() {
+    this.value = Math.min(this.maximum, this.value + hoursToMilliseconds(1));
+  }
 
-        resolve(idb);
-      };
-    });
+  decrement() {
+    this.value = Math.max(this.minimum, this.value - hoursToMilliseconds(1));
   }
 }
 
-const database = new Database();
-await database.init();
+export class State {
+  buff = new Buff();
+  isReverseOn = ref(false);
+  maxTime = new MaxTime();
+  targetDate = ref(Date.now());
 
-export default database.state;
+  * [Symbol.iterator]() {
+    for (const property in this) {
+      yield [this[property], property] as const;
+    }
+  }
+}
diff --git a/frontend/src/store.ts b/frontend/src/store.ts
new file mode 100644
index 0000000..8a90051
--- /dev/null
+++ b/frontend/src/store.ts
@@ -0,0 +1,74 @@
+import { watch } from "vue";
+
+import { State } from "@/state";
+
+const IDB_NAME = "flowey";
+const OBJECT_STORE_NAME = "state";
+
+class Store {
+  idb: IDBDatabase | null = null;
+  state: State = new State();
+
+  async init() {
+    this.idb = await this.openIndexedBD();
+
+    for (const [ref, property] of this.state) {
+      watch(ref, () => {
+        this.put(ref.value, property);
+      });
+    }
+  };
+
+  put(value: unknown, property: string) {
+    this.idb!
+      .transaction(OBJECT_STORE_NAME, "readwrite")
+      .objectStore(OBJECT_STORE_NAME)
+      .put(value, property);
+  }
+
+  private async openIndexedBD() {
+    return new Promise<IDBDatabase>((resolve) => {
+      const request = window.indexedDB.open(IDB_NAME);
+
+      request.onupgradeneeded = (event) => {
+        const idb = (event.target as IDBOpenDBRequest).result;
+        const objectStore = idb.createObjectStore(OBJECT_STORE_NAME);
+
+        objectStore.transaction.oncomplete = () => {
+          const objectStore = idb
+            .transaction(OBJECT_STORE_NAME, "readwrite")
+            .objectStore(OBJECT_STORE_NAME);
+
+          for (const [ref, property] of this.state) {
+            objectStore.put(ref.value, property);
+          }
+        };
+      };
+
+      request.onsuccess = (event) => {
+        const idb = (event.target as IDBOpenDBRequest).result;
+        const objectStore = idb
+          .transaction(OBJECT_STORE_NAME, "readonly")
+          .objectStore(OBJECT_STORE_NAME);
+
+        for (const [ref, property] of this.state) {
+          objectStore.get(property).onsuccess = (event) => {
+            const value: unknown = (event.target as IDBRequest).result;
+            if (value !== undefined && typeof value === typeof ref.value) {
+              ref.value = value as typeof ref.value;
+              return;
+            }
+            this.put(ref.value, property);
+          };
+        }
+
+        resolve(idb);
+      };
+    });
+  }
+}
+
+const store = new Store();
+await store.init();
+
+export const state = store.state;