<html>
<head>
<script type="text/javascript"> window.addEventListener('error', function(event) { var message = JSON.parse(JSON.stringify(event.message)); var source = event.filename; var lineno = event.lineno; var colno = event.colno; var error = event.error; window.parent.postMessage({ type: 'iframeError', details: { message: message, source: source, lineno: lineno, colno: colno, error: error ? error.stack : '' } }, '*'); }); window.addEventListener('unhandledrejection', function(event) { window.parent.postMessage({ type: 'iframePromiseRejection', details: { reason: event.reason } }, '*'); }); </script>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Period Tracker</title>
<meta name="description" content="Track and predict your menstrual cycle with this simple and colorful web app.">
<meta name="keywords" content="period tracker, menstrual cycle, health, calendar">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Patrick+Hand&display=swap" rel="stylesheet">
<script type="text/javascript">
try {
let periodData = loadLocal('periodData') || { lastPeriodDate: null, cycleLength: 28, periodLength: 5 };
function saveData() {
saveLocal('periodData', periodData);
}
function updatePredictions() {
const today = new Date();
const lastPeriodDate = new Date(periodData.lastPeriodDate);
const daysSinceLastPeriod = Math.floor((today - lastPeriodDate) / (1000 * 60 * 60 * 24));
const daysUntilNextPeriod = periodData.cycleLength - daysSinceLastPeriod % periodData.cycleLength;
const nextPeriodDate = new Date(today.getFullYear(), today.getMonth(), today.getDate() + daysUntilNextPeriod);
$('#next-period').text(nextPeriodDate.toLocaleDateString());
}
function submitPeriodData() {
const lastPeriodDate = $('#last-period-date').val();
const cycleLength = parseInt($('#cycle-length').val(), 10);
const periodLength = parseInt($('#period-length').val(), 10);
if (lastPeriodDate && cycleLength && periodLength) {
periodData = { lastPeriodDate, cycleLength, periodLength };
saveData();
updatePredictions();
}
}
document.addEventListener("DOMContentLoaded", function() {
if (periodData.lastPeriodDate) {
$('#last-period-date').val(periodData.lastPeriodDate);
$('#cycle-length').val(periodData.cycleLength);
$('#period-length').val(periodData.periodLength);
updatePredictions();
}
$('#period-form').submit(function(e) {
e.preventDefault();
submitPeriodData();
});
});
function saveLocal(key, data) {
localStorage.setItem(key, JSON.stringify(data));
}
function loadLocal(key) {
const data = localStorage.getItem(key);
return data ? JSON.parse(data) : null;
}
} catch (error) {
throw error;
}
</script>
<style>
body {
font-family: 'Patrick Hand', cursive;
background: #ff9a9e; /* fallback for old browsers */
background: -webkit-linear-gradient(to right, #ff9a9e, #fecfef); /* Chrome 10-25, Safari 5.1-6 */
background: linear-gradient(to right, #ff9a9e, #fecfef); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
color: #333;
}
#main-container {
padding-top: 50px;
}
.card {
background-color: #fff;
border-radius: 10px;
padding: 20px;
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.form-control, .btn {
border-radius: 20px;
}
.btn-pink {
background-color: #ff9a9e;
border-color: #ff9a9e;
color: white;
}
.btn-pink:hover {
background-color: #ff768a;
border-color: #ff768a;
}
.emoji-icon {
font-size: 24px;
margin-right: 10px;
}
</style>
<link rel="canonical" href="https://calculator.tools/app/period-tracker-805/">
<meta charset="utf-8">
</head>
<body>
<div id="main-container" class="container">
<div class="row justify-content-center">
<div class="col-md-6">
<div class="card">
<h2 class="text-center">📅 Period Tracker</h2>
<form id="period-form">
<div class="mb-3">
<label for="last-period-date" class="form-label">Last Period Start Date</label>
<input type="date" class="form-control" id="last-period-date" required>
</div>
<div class="mb-3">
<label for="cycle-length" class="form-label">Average Cycle Length (days)</label>
<input type="number" class="form-control" id="cycle-length" required>
</div>
<div class="mb-3">
<label for="period-length" class="form-label">Average Period Length (days)</label>
<input type="number" class="form-control" id="period-length" required>
</div>
<button type="submit" class="btn btn-pink w-100">Update</button>
</form>
<div class="text-center mt-4">
<p>Your next period is expected on:</p>
<p class="lead" id="next-period">-</p>
</div>
</div>
</div>
</div>
</div>
<script type="text/javascript"> var localStoragePrefix = "ct-805"; var lastSave = 0; function saveLocal(data) { if (Date.now() - lastSave < 1000) { return; } let cookie = localStoragePrefix + "=" + JSON.stringify(data) + "; path=" + window.location.pathname + "'; SameSite=Strict"; cookie += "; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365 * 1000).toUTCString(); document.cookie = cookie; lastSave = Date.now(); } function loadLocal() { var cookiePrefix = localStoragePrefix + "="; var cookieStart = document.cookie.indexOf(cookiePrefix); if (cookieStart > -1) { let cookieEnd = document.cookie.indexOf(";", cookieStart); if (cookieEnd == -1) { cookieEnd = document.cookie.length; } var cookieData = document.cookie.substring(cookieStart + cookiePrefix.length, cookieEnd); return JSON.parse(cookieData); } } </script>
<script type="text/javascript"> window.addEventListener('load', function() { var observer = new MutationObserver(function() { window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); observer.observe(document.body, {attributes: true, childList: true, subtree: true}); window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); </script>
</body>
</html>
These are apps made by the community!
Calculator Tools allows you to instantly create and generate any simple one page web app for
free and immediately have it online to use and share. This means anything! Mini apps,
calculators, trackers, tools, games, puzzles, screensavers... anything you can think of that the
AI can handle.
The AI uses Javacript, HTML, and CSS programming to code your app up in moments. This currently
uses GPT-4 the latest and most powerful version of the OpenAI GPT language model.
Have you ever just wanted a simple app but didn't want to learn programming or pay someone to
make it for you? Calculator Tools is the solution! Just type in your prompt and the AI will
generate a simple app for you in seconds. You can then customize it to your liking and share it
with your friends.
AI has become so powerful it is that simple these days.
It uses GPT-4 which is the most powerful model for ChatGPT.
Calculator Tools does not remember things from prompt to prompt, each image is a unique image
that does not reference any of the images or prompts previously supplied.