diff --git a/src/screens/deck-form/card-form.tsx b/src/screens/deck-form/card-form.tsx
index b467c239..3d6182a0 100644
--- a/src/screens/deck-form/card-form.tsx
+++ b/src/screens/deck-form/card-form.tsx
@@ -9,7 +9,7 @@ import { CardFormView } from "./card-form-view.tsx";
 export const CardForm = observer(() => {
   const deckFormStore = useDeckFormStore();
   const cardForm = deckFormStore.cardForm;
-  assert(cardForm);
+  assert(cardForm, "Card should not be empty before editing");
 
   useMainButton("Save", () => {
     deckFormStore.saveCardForm();
diff --git a/src/screens/deck-list/main-screen.tsx b/src/screens/deck-list/main-screen.tsx
index 0e2b83c7..f466d8b6 100644
--- a/src/screens/deck-list/main-screen.tsx
+++ b/src/screens/deck-list/main-screen.tsx
@@ -130,7 +130,7 @@ export const MainScreen = observer(() => {
           icon={"mdi-call-made"}
           onClick={() => {
             const channelLink = import.meta.env.VITE_CHANNEL_LINK;
-            assert(channelLink);
+            assert(channelLink, "Channel link env variable is empty");
 
             WebApp.openTelegramLink(channelLink);
           }}
diff --git a/src/screens/deck-review/deck-preview.tsx b/src/screens/deck-review/deck-preview.tsx
index 9d01ea20..c11fda74 100644
--- a/src/screens/deck-review/deck-preview.tsx
+++ b/src/screens/deck-review/deck-preview.tsx
@@ -15,7 +15,7 @@ import { useMainButton } from "../../lib/telegram/use-main-button.tsx";
 export const DeckPreview = observer(() => {
   const reviewStore = useReviewStore();
   const deck = deckListStore.selectedDeck;
-  assert(deck);
+  assert(deck, "Deck should not be empty before preview");
 
   useBackButton(() => {
     screenStore.navigateToMain();
diff --git a/src/screens/deck-review/share-deck-button.tsx b/src/screens/deck-review/share-deck-button.tsx
index 5dcbfacb..8b636ec6 100644
--- a/src/screens/deck-review/share-deck-button.tsx
+++ b/src/screens/deck-review/share-deck-button.tsx
@@ -20,7 +20,7 @@ export const ShareDeckButton = (props: Props) => {
   const onClick = async () => {
     if (shareId) {
       const botUrl = import.meta.env.VITE_BOT_APP_URL;
-      assert(botUrl);
+      assert(botUrl, "Bot URL is not set");
       const botUrlWithDeckId = `${trimEnd(botUrl, "/")}?startapp=${shareId}`;
       const shareUrl = `https://t.me/share/url?text=&url=${botUrlWithDeckId}`;
       WebApp.openTelegramLink(shareUrl);
diff --git a/src/store/card-form-store.ts b/src/store/card-form-store.ts
index da34148e..e69ad815 100644
--- a/src/store/card-form-store.ts
+++ b/src/store/card-form-store.ts
@@ -27,7 +27,7 @@ export class CardFormStore {
   }
 
   changeState(state: CardState) {
-    assert(this.isOpened);
+    assert(this.isOpened, "The card should be opened before changing state");
     this.state = state;
   }
 }
diff --git a/src/store/deck-form-store-context.tsx b/src/store/deck-form-store-context.tsx
index 9d1d0d9a..44d21038 100644
--- a/src/store/deck-form-store-context.tsx
+++ b/src/store/deck-form-store-context.tsx
@@ -14,6 +14,6 @@ export const DeckFormStoreProvider = (props: { children: ReactNode }) => {
 
 export const useDeckFormStore = () => {
   const store = useContext(Context);
-  assert(store);
+  assert(store, "DeckFormStoreProvider not found");
   return store;
 };
diff --git a/src/store/deck-form-store.ts b/src/store/deck-form-store.ts
index 910a3fdf..b410eac5 100644
--- a/src/store/deck-form-store.ts
+++ b/src/store/deck-form-store.ts
@@ -55,7 +55,7 @@ export class DeckFormStore {
       const deck = deckListStore.myDecks.find(
         (myDeck) => myDeck.id === screenStore.deckFormId,
       );
-      assert(deck);
+      assert(deck, "Deck not found in deckListStore");
       this.form = {
         title: createDeckTitleField(deck.name),
         description: new TextField(deck.description ?? ""),
@@ -81,7 +81,7 @@ export class DeckFormStore {
   }
 
   openNewCardForm() {
-    assert(this.form);
+    assert(this.form, 'openNewCardForm: form is empty');
     this.cardFormIndex = this.form.cards.length;
     this.form.cards.push({
       front: createCardSideField(""),
@@ -101,7 +101,7 @@ export class DeckFormStore {
   }
 
   async onCardBack() {
-    assert(this.cardForm);
+    assert(this.cardForm, 'onCardBack: cardForm is empty');
     if (isFormEmpty(this.cardForm)) {
       this.quitCardForm();
       return;
@@ -114,7 +114,7 @@ export class DeckFormStore {
   }
 
   async onDeckBack() {
-    assert(this.form);
+    assert(this.form, 'onDeckBack: form is empty');
     if (isFormEmpty(this.form) || !isFormTouched(this.form)) {
       screenStore.navigateToMain();
       return;
@@ -127,14 +127,13 @@ export class DeckFormStore {
   }
 
   onDeckSave() {
-    assert(this.form);
+    assert(this.form, 'onDeckSave: form is empty');
 
     if (this.form.cards.length === 0) {
       showAlert("Please add at least 1 card to create a deck");
       return;
     }
 
-    assert(this.form);
     formTouchAll(this.form);
     if (!isFormValid(this.form)) {
       return;
@@ -162,8 +161,8 @@ export class DeckFormStore {
   }
 
   quitCardForm() {
-    assert(this.cardFormIndex !== undefined);
-    assert(this.form);
+    assert(this.cardFormIndex !== undefined, 'quitCardForm: cardFormIndex is empty');
+    assert(this.form, 'quitCardForm: form is empty');
     this.form.cards.splice(this.cardFormIndex, 1);
     this.cardFormIndex = undefined;
   }
diff --git a/src/store/deck-list-store.ts b/src/store/deck-list-store.ts
index fe843151..ec3d5fb9 100644
--- a/src/store/deck-list-store.ts
+++ b/src/store/deck-list-store.ts
@@ -88,7 +88,7 @@ export class DeckListStore {
 
   get canReview() {
     const deck = this.selectedDeck;
-    assert(deck);
+    assert(deck, "canReview requires a deck to be selected");
 
     return (
       deck.cardsToReview.length > 0 || screenStore.screen === Screen.DeckPublic
@@ -100,7 +100,7 @@ export class DeckListStore {
       return;
     }
 
-    assert(deckListStore.selectedDeck);
+    assert(deckListStore.selectedDeck, "No selected deck for review");
     if (screenStore.screen === Screen.DeckPublic) {
       deckListStore.addDeckToMine(deckListStore.selectedDeck.id);
     }
diff --git a/src/store/quick-add-card-form-store.ts b/src/store/quick-add-card-form-store.ts
index 9d83f33e..f7e4336b 100644
--- a/src/store/quick-add-card-form-store.ts
+++ b/src/store/quick-add-card-form-store.ts
@@ -27,7 +27,7 @@ export class QuickAddCardFormStore {
       return;
     }
 
-    assert(screenStore.cardQuickAddDeckId);
+    assert(screenStore.cardQuickAddDeckId, "cardQuickAddDeckId should not be empty");
 
     this.isSending = true;
 
diff --git a/src/store/review-store-context.tsx b/src/store/review-store-context.tsx
index 47d9035a..88c944ac 100644
--- a/src/store/review-store-context.tsx
+++ b/src/store/review-store-context.tsx
@@ -14,6 +14,6 @@ export const ReviewStoreProvider = (props: { children: ReactNode }) => {
 
 export const useReviewStore = () => {
   const store = useContext(Context);
-  assert(store);
+  assert(store, "ReviewStoreProvider not found");
   return store;
 };
diff --git a/src/store/review-store.ts b/src/store/review-store.ts
index 05f9f7e5..990f6cdc 100644
--- a/src/store/review-store.ts
+++ b/src/store/review-store.ts
@@ -64,19 +64,19 @@ export class ReviewStore {
 
   open() {
     const currentCard = this.currentCard;
-    assert(currentCard);
+    assert(currentCard, "Current card should not be empty");
     currentCard.open();
   }
 
   changeState(cardState: CardState) {
     const currentCard = this.currentCard;
-    assert(currentCard);
+    assert(currentCard, "currentCard should not be null while changing state in review");
     currentCard.changeState(cardState);
 
     const currentCardIdx = this.cardsToReview.findIndex(
       (card) => card.id === currentCard.id,
     );
-    assert(currentCardIdx !== -1);
+    assert(currentCardIdx !== -1, "currentCardIdx is empty");
     this.cardsToReview.splice(currentCardIdx, 1);
     if (currentCard.state === CardState.Forget) {
       if (!this.result.forgotIds.includes(currentCard.id)) {