Help Center

Click "Log in" or "Sign up" in the top navigation bar and continue with your Google account — there is no separate password to create. The same button works whether it is your first visit or a returning one.

Google's own unrecognized-device check occasionally asks for a one-time code. If it doesn't arrive, wait a minute and use the "Resend" option, or try signing in again — it will restart the Google flow from scratch.

Submit an essay or a recorded speaking answer and you get a band score back with sentence-level feedback, model corrections and coaching notes, marked against the official IELTS band descriptors — with a real pronunciation-assessment model judging the speaking side. A free quick-grade tier is available; the detailed paid report includes deeper analysis.

The free quick-grade gives you an instant approximate band and high-level feedback. The paid detailed report adds sentence-by-sentence corrections, an edited/model rewrite, and deeper lexical/grammar/coherence breakdowns.

Visit the Pricing page for subscription plans, or open any Vault (Band 9 Writing Vault, PRO vocab packs) to see its one-time purchase price. Payment is by VietQR bank transfer (scan the QR in your banking app), MoMo e-wallet or international card — you'll see the available methods at checkout.

This can take a minute to sync after checkout — refresh the page. If access still hasn't appeared after a few minutes, contact us with your payment confirmation and we'll sort it out manually.

Words you add are scheduled using an FSRS spaced-repetition algorithm — you'll see them again right before you're likely to forget them. Review from the /vocab page daily to build your streak.

Bandzy is an installable app (PWA) — no App Store or Play Store needed. On iPhone (Safari): tap the Share button (the square with an up-arrow) in the toolbar, then "Add to Home Screen". On Android (Chrome): tap the ⋮ menu, then "Install app" / "Add to Home Screen" — or use the install button we show at the top of the page. Once installed it opens full-screen, like a normal app.

Links opened inside Zalo, Facebook, Messenger, Instagram or TikTok run in that app's built-in browser, which cannot add apps to your Home Screen — this is a limitation of those apps, not of Bandzy. You need to open the page in your real browser first. Easiest way: tap the "Copy link" button on the install banner at the top of the page, then open Safari (iPhone) or Chrome (Android), paste the link, and install from there. Alternatively, look for an "Open in Safari" / "Open in Chrome" (or "Open in browser") option in that app's ••• or ⋮ menu, then follow the normal install steps.

Please describe what you were doing and what happened — screenshots help a lot. Use the chat button in the corner of any page, or the contact option below, and a real person will look into it.

Downloading your data IS a button now: on your Account page, choose "Download my data". You get one file with your practice history, your grades, your vocabulary, your preferences and your purchases — and it lists what it deliberately leaves out, and why. Deleting your account is not a button, on purpose: it cannot be undone, so a person on our team does it for you. Ask through the chat button in the corner of any page, or email support@bandzy.org; our Privacy Policy commits us to answering data requests within 72 hours. Deleting removes what identifies you — your name, the email or phone you sign in with, your Google link and your profile details — and signs you out on every device. Whatever remains of your practice history is kept only in anonymous form, and payment records only for as long as accounting and tax law require. If all you want is one grading report, every Writing and Speaking results page has a Download report button.