Terms of service

Plain terms.

Last updated 4 November 2026 (version 1)

Agreeing to these terms

  • Bondline's notebook, drawing tools, practice and classes are free.
  • Your notes belong to you. We store them only to run Bondline for you.
  • Bondline Pro is an optional paid plan. You can cancel any time, and you can ask for a refund within 14 days of your first payment.
  • Bondline is a study aid. Check important facts against your course materials, and never use it as lab safety guidance.

These terms apply when you use Bondline at bondline.site, including the installed app. By using Bondline you agree to them. If you don't agree, please don't use Bondline. The privacy policy explains what data we keep and why.

Who we are

Bondline is run by an independent developer based in Malaysia ("we", "us"). You can contact us at bondlinenotes@gmail.com.

Using Bondline

You can use Bondline without an account. Your notes then stay in your browser on that device, and they're lost if you clear your browser data. If you create an account, keep your password safe; you're responsible for what happens under your account.

You must be 13 or older to create a Bondline account; Bondline asks for your date of birth before you sign in. Anyone can use Bondline without an account. If you are under the age at which you can agree to these terms yourself where you live, please ask a parent or guardian to read them with you and to agree for you before you create an account or buy Pro. If you are under 18, ask a parent or guardian before you buy Pro.

Your notes and content

You keep ownership of everything you write, draw or upload. You give us permission to store, copy and display it only as needed to run Bondline for you: saving it, syncing it between your devices, and showing it to people you choose to share it with (share links, shared notebooks and classes).

Anyone with a share link can open that shared copy, so only share links with people you trust. You can delete a note, a share link or your whole account at any time.

Acceptable use

Please don't use Bondline to:

We may remove content or suspend an account that breaks these rules. Where we can, we'll tell you first.

Classes and teachers

Teachers and lecturers can create classes, set work and see the scores of students who join. If you run a class, you're responsible for using your students' names, email addresses and scores only for teaching, in line with your school's or university's rules. Students only share their scores on work set in a class they join, never their notes.

Bondline Pro

Bondline Pro is an optional paid plan with extra study features, currently mock exams, weak-spot analytics, weak-spot practice and exam history. The features in Pro may grow or change over time. We won't move features that are free today behind Pro.

Plans

Payments

Payments for Pro are taken by Stripe, our payment processor. Stripe takes the payment and sends your receipt; any sales tax that applies is shown before you pay. We never see or store your card details. A parent or guardian can pay for a student's account from the link the student sends them, and a teacher or tuition centre can buy a licence for the students in their classes.

Prices are shown before you pay. If we change the price of the monthly plan, we'll tell you at least 30 days before the change affects you, and you can cancel before then.

Cancelling

You can cancel the monthly plan at any time from Manage subscription in Bondline (account menu → Bondline Pro), or from the link in your receipt email. Pro stays on until the end of the month you've paid for, and you won't be charged again.

Preview period

While Pro is in preview, its features may be free for everyone. We'll announce in the app before that ends.

Refunds

If Pro isn't right for you, email bondlinenotes@gmail.com within 14 days of your first payment (for the monthly plan) or of buying a semester pass, an exam pass or a centre licence, and we'll give you a full refund. No reason needed. Refunds go back to the original payment method through Stripe and can take 5–10 working days to appear.

After 14 days, payments aren't normally refunded, but you can cancel at any time to stop future charges. If something went wrong, such as a double charge or Pro not switching on, contact us and we'll put it right. Nothing in this policy limits any rights you have under consumer law where you live.

Chemistry content

We work hard to make Bondline's lessons, questions, spectra, predictions and mechanisms accurate, but mistakes happen, and some tools (such as the reaction predictor and predicted spectra) give approximate results by design. Bondline is a study aid: check anything important against your textbook, lecture notes or teacher, and follow your course's conventions in exams.

Bondline is not laboratory or safety guidance. Never use it to decide how to handle, mix or dispose of chemicals. Follow your lab's safety rules and supervisors.

If you spot an error, please tell us at bondlinenotes@gmail.com.

Changes to Bondline

We may add, change or remove features, and we may occasionally need to take Bondline offline for maintenance. If we ever shut Bondline down, we'll give at least 30 days' notice in the app so you can export your notes, and we'll refund any unused part of a Pro payment.

Disclaimers and liability

Bondline is provided "as is". We can't promise it will always be available, error-free or that it will help you get a particular grade. Please keep your own backup of anything important: you can export notes to PDF or PowerPoint at any time.

As far as the law allows, we aren't liable for indirect or consequential losses (such as lost study time or exam results), and our total liability to you for any claim is limited to the amount you paid us for Pro in the 12 months before the claim, or US$20 if you haven't paid anything. Some places don't allow these limits, so they may not all apply to you.

Ending your use

You can stop using Bondline at any time and ask us to delete your account (see the privacy policy). Deleting your account doesn't cancel a Pro subscription by itself, so cancel that first from Manage subscription. We may suspend or close an account that seriously or repeatedly breaks these terms.

Governing law

These terms are governed by the laws of Malaysia. If there's a dispute, please contact us first and we'll try to sort it out informally. If you live outside Malaysia, you keep any protections the consumer laws of your country give you.

Changes and contact

If we change these terms, we'll update the date at the top of this page, and for important changes we'll also tell you in the app. Questions: bondlinenotes@gmail.com.