Terms & Conditions

Last updated: 24 October 2026

These terms are the agreement between you and us, the people who run DataLens Learn at learndatalens.com. By using the site you agree to them. We've tried to keep them short and in plain language. If something isn't clear, email us.

What DataLens is

DataLens Learn is a site for learning programming and data skills, one short module at a time. Each module has a lesson, practice questions and a code editor that runs your code and checks your answers. Your code runs inside your own browser, not on our servers.

A large part of the site is free. DataLens Pro unlocks every module and every track project (see below).

Your account

You can use the free lessons without an account. Your progress then stays in your browser only.
To save progress across devices or buy Pro, you sign in with Google. Signing in for the first time creates your account. One account is for one person; please don't share it.
You're responsible for what happens under your account, so keep your Google account secure.
If you're under the age of majority where you live, ask a parent or guardian before buying Pro.
You can delete your account at any time from Settings. Our Privacy Policy explains what that removes and what we keep.

DataLens Pro and payments

What you get. Pro unlocks every module in every track, plus every track project, for your account. New Pro modules we add later are included.
Price. Pro is a one-time payment. The price is shown in rupiah on the site before you pay, and that's the amount you're charged. We may change the price, or run promotions, for future buyers; that never changes what you already paid.
Payments go through Midtrans. Midtrans handles the payment (QRIS, e-wallets, bank transfer or card) under its own terms. We never see or store your card or bank details. Your account is upgraded once Midtrans confirms the payment, which is usually immediate but can take a little longer for some methods.
No subscription or renewals. Pro is not a subscription. Nothing renews and you won't be charged again, so there's nothing to cancel. Your Pro access lasts as long as your account exists and the site is running.
Refunds. Because Pro content is unlocked as soon as you pay, payments generally aren't refundable once Pro is active. We will refund you if you were charged more than once for the same thing, or if you paid and we can't get Pro working on your account. Email us within 14 days of the payment with your order ID (it's on your receipt in Settings). This doesn't limit any rights you have under Indonesian consumer protection law.
Deleting your account also removes your Pro access, and that isn't refunded.

Using the site fairly

Please don't:

share your account, or copy, resell or republish Pro lessons or solutions for others;
try to get into Pro content, other people's accounts or our systems without paying or without permission;
scrape or download the site in bulk, or put heavy automated load on it;
use the site to break the law or to harm other people.

If an account breaks these rules, we may suspend or close it. Where we can, we'll tell you first and explain why.

Who owns what

The lessons, questions, solutions, datasets, design and code of DataLens are ours (or used with permission) and are protected by copyright. You may use them for your own learning, including saving notes and code snippets for yourself. You may not republish or sell them.

The code you write in the exercises and the playground is yours.

No guarantees

We work hard to make the lessons accurate and the site reliable, but we provide DataLens "as is". We can't promise it will always be available, free of mistakes, or that it will get you a particular job, grade or result. Lessons are for learning; check anything important before relying on it at work.

We may change, improve or retire parts of the site over time. If we ever have to shut DataLens down, we'll give Pro users reasonable notice.

Limits on our responsibility

As far as the law allows, we aren't responsible for indirect losses, such as lost profits, lost data or lost opportunities, that come from using or not being able to use DataLens. If we are responsible for something, the most we'll owe you is the amount you paid us for Pro. Nothing in these terms limits responsibility that can't be limited by law.

Governing law

These terms are governed by the laws of the Republic of Indonesia. If we disagree about something, let's first try to sort it out by email. If that doesn't work, the dispute will be settled by the courts of Indonesia.

Changes to these terms

We may update these terms as the site changes. When we do, we'll change the date at the top of this page, and for important changes we'll also post a notice on the site. Continuing to use DataLens after a change means you accept the updated terms. Changes never take away Pro access you've already paid for.

Contact

Questions, feedback, refund requests or anything else: [email protected]