diff --git a/.gitignore b/.gitignore
index a547bf3..463de42 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,5 @@ dist-ssr
 *.njsproj
 *.sln
 *.sw?
+
+src/assets/*.json
diff --git a/src/App.jsx b/src/App.jsx
index fcc25f9..62d8a8b 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,38 +1,139 @@
-import { useState } from 'react';
-import { House } from '@phosphor-icons/react';
+import { useState, useEffect, useRef } from 'react';
+import { ArrowRight, House, Trash } from '@phosphor-icons/react';
 
 import { GREP_A_WORD } from './constants/options'
 import { OptionsRow } from './components/OptionsRow';
 
+import wordCountObject from './assets/wordCount.json';
+
 import styles from './App.module.css'
 
 import './global.css'
 
 export function App() {
-  const [selectOption, setSelectOption] = useState('');
+  const [selectedOption, setSelectedOption] = useState(GREP_A_WORD);
+  const [inputValue, setInputValue] = useState('');
+  const [wordCount, setWordCount] = useState('');
+  const [isCleanFormButtonDisabled, setIsCleanFormButtonDisabled] = useState(true);
+  const [isSubmitButtonDisabled, setIsSubmitButtonDisabled] = useState(true);
+
+  const inputRef = useRef(null);
 
   function handleHomeButtonClick() {
-    setSelectOption('');
+    setSelectedOption('');
   }
 
+  function handleInputValueChange() {
+    const inputStr = event.target.value;
+
+    if(!event.target.value) {
+      setInputValue('');
+    }
+
+    if (!inputStr.match(/^[a-zA-Z0-9À-ú]+$/)) return;
+
+    setInputValue(inputStr);
+  }
+
+  function handleSubmitForm() {
+    event.preventDefault();
+
+    const inputValueStr = inputValue.toLowerCase();
+
+    if (!wordCountObject.hasOwnProperty(inputValueStr)) {
+      setWordCount('no');
+      return;
+    }
+
+    setWordCount(wordCountObject[inputValueStr]);
+  }
+  
+  function handleCleanForm() {
+    event.preventDefault();
+
+    setInputValue('');
+    setWordCount('');
+    inputRef.current.focus();
+  }
+
+  function onKeyUpInput() {
+    const enterKeyCharCode = 13;
+    if (event.keyCode !== enterKeyCharCode) {
+      return;
+    }
+
+    if (inputValue === '') {
+      return;
+    }
+
+    handleSubmitForm();
+  }
+
+  useEffect(() => {
+    if (inputValue === '') {
+      setIsSubmitButtonDisabled(true);
+    } else {
+      setIsSubmitButtonDisabled(false);
+    }
+
+  }, [inputValue])
+
+  useEffect(() => {
+    if ([inputValue, wordCount].every((varStr) => varStr === '')) {
+      setIsCleanFormButtonDisabled(true);
+    } else {
+      setIsCleanFormButtonDisabled(false);
+    }
+
+  }, [inputValue, wordCount])
+
   return (
     <div>
       <header className={styles.header}>
-        <img src={'https://static-00.iconduck.com/assets.00/sushi-emoji-2048x2048-5itsruw8.png'} />
-        <p>My diary exposer</p>
         <button className={styles.homeButton} onClick={handleHomeButtonClick}>
           <House size={24} />
         </button>
-        <OptionsRow onSelectOption={selectOption}/>
+        <OptionsRow onSelectOption={selectedOption}/>
       </header>
 
       <div className={styles.wrapper}>
         <h1>Welcome to my diary exposer!</h1>
-        <p>Please select one of the options:</p>
-        <OptionsRow onSelectOption={setSelectOption} />
 
-        { selectOption &&
-          <p>foo</p>
+        { !!! selectedOption &&
+          <>
+            <p>Please select one of the options:</p>
+            <OptionsRow onSelectOption={setSelectedOption} />
+          </>
+        }
+
+        { selectedOption &&
+          <>
+            <div className={styles.optionInfo}>
+              <h2>Mode: Grep a word</h2>
+              <h3>Please input a word to see how many times it's mentioned in my diary:</h3>
+              <p>(it's case insensitive)</p>
+            </div>
+            <div className={styles.form}>
+              <input type='text' ref={inputRef} value={inputValue} onChange={handleInputValueChange} maxLength={16} onKeyUp={onKeyUpInput} />
+              <button onClick={handleSubmitForm} disabled={isSubmitButtonDisabled} >
+                <ArrowRight size={24} />
+              </button>
+
+              <button className={styles.cleanFormButton} onClick={handleCleanForm} disabled={isCleanFormButtonDisabled}>
+                <Trash size={24} />
+              </button>
+            </div>
+          </>
+        }
+
+        { wordCount &&
+          <>
+            <div className={styles.result}>
+              <p>There are</p>
+              <p className={styles.wordCount}> {wordCount} </p>
+              <p>occurrences of this word in my diary!</p>
+            </div>
+          </>
         }
       </div>
     </div>
diff --git a/src/App.module.css b/src/App.module.css
index f5676a3..08174b1 100644
--- a/src/App.module.css
+++ b/src/App.module.css
@@ -3,11 +3,6 @@
   margin: 2rem auto;
   padding: 0 1rem;
 
-  /* display: grid; */
-  /* grid-template-columns: 256px 1fr; */
-  /* gap: 2rem; */
-  /* align-items: flex-start; */
-
   display: flex;
   align-items: center;
   justify-content: center;
@@ -47,9 +42,77 @@
   color: var(--gray-400);
   cursor: pointer;
   line-height: 0;
-  border-radius: 2px;
+  border-radius: 8px;
+  transition: color 0.1s;
 }
 
 .homeButton:hover {
   color: var(--ice-cold);
 }
+
+.optionInfo {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.form {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-direction: row;
+}
+
+.form button + button {
+  margin-left: 1rem;
+}
+
+.form button {
+  padding: 0.65rem;
+  border-radius: 8px;
+  width: 3rem;
+  height: 3rem;
+  border: solid 1px;
+  background-color: var(--gray-600);
+  color: var(--white);
+  margin-left: 1rem;
+
+  transition: color 0.1s;
+  transition: background-color 0.1s;
+}
+
+.form button:disabled {
+  background-color: var(--gray-400);
+  color: var(--black);
+  border: none;
+  border-color: --var(--gray-400);
+}
+
+.form button:enabled:hover {
+  background: var(--green-300);
+  color: var(--white);
+  cursor: pointer;
+}
+
+.form input {
+  font-size: 1.5rem;
+  width: 24vw;
+  padding: 0.75rem;
+  border-radius: 8px;
+  border: none;
+}
+
+.result {
+  flex-direction: row;
+}
+
+.result p {
+  display: inline;
+  font-size: 2rem;
+}
+
+.result .wordCount {
+
+}
diff --git a/src/assets/get-diary-word-count.sh b/src/assets/get-diary-word-count.sh
new file mode 100755
index 0000000..d6e6297
--- /dev/null
+++ b/src/assets/get-diary-word-count.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+notes_path=$1
+
+if [ -z "$notes_path" ]; then
+  echo "Usage: `basename @0` [notes-path]"
+  exit 1
+fi
+
+find "$notes_path" \
+  -type f -name '*.md' -exec cat {} + | \
+  sed 's/[^[:alnum:][:space:]]//g' | \
+  tr '[:upper:]' '[:lower:]' | \
+  tr '[:space:]' '[\n*]' | \
+  sort | \
+  uniq -c | \
+  awk '{print "{\"" $2 "\": " $1 "}"}' | \
+  jq -s 'add' > wordCount.json