For JAMB and WAEC students
Zindryx is a study app where you practise exams in real time with other students, ask an AI built for studying, and chat in a space designed to keep you safe.
Practice with friends. See who's ahead.
What's new
Current app version: 1.1.6. Every version is listed on the download page.
Invite links
To join a group on Zindryx you need an invite link. An invite link looks like linking.chadivavirtuals.name.ng/?code=abc1234. The code is 7 letters or numbers. Opening the link on a phone with Zindryx installed opens the app and shows the group with a Join button. Without the app, the website handles it.
Before joining, you only see the group's name, photo and member count. Never message content.
The expiry (up to 7 days by default), whether new members see earlier messages, and revoking the link early.
No code detected: the link had no code. Invalid code: no invite with that code exists, so check for a typo. Expired: it passed its expiry date. Revoked: the admin cancelled it. For the last two, ask the admin for a new link.
You decide who can add you to groups and who can call you. Set it to nobody and no one can add you without your consent.
Our story
Hxf Hub started with one person: Ifeanyi David Onyeka, also known as Holixdave Hxf. The studio carries his name, and he built the first version alone. As the app grew, a small team formed around it to keep up.
Zindryx was first made for JAMB students. It has since grown to cover secondary school standard education, with JAMB and WAEC practice.
Why "Zindryx"? We searched around online for a name and couldn't find anything matching that word. So it was ours. We tied it to a meaning: Genesis, a beginning.
Students in higher institutions: Learning content on Zindryx is built for JAMB and WAEC, so we can't promise it for your courses. The platform parts, like chat and calls, are open to you as a study-focused space.
Studying alone is hard. Answering past questions alone is harder. Students who prepare by themselves can feel left behind.
Hxf Hub began as a one-developer project, shaped by what students actually needed to prepare for their exams.
The answer was a synced exam system: many students, one practice room, the same questions, in real time.
An AI built far beyond exam schemes arrived to explain, teach and keep your notes.
Chats, groups and calls got privacy controls and protection against spam and fraud.
A small team now builds Zindryx together, and we're still growing.
Features
Three big ideas sit at the centre of Zindryx. Around them are the tools that make studying easier.
Pillar 1
Studying and answering questions alone can leave you behind. So Zindryx has a synced exam system: several students practise the same questions together, in real time, in one practice room.
Swipe to see the whole journey.
Pillar 2
OOOR isn't one model. It combines several large language models working together to give you the best result in the most efficient way. It goes far beyond exam schemes.
Pillar 3
Chat works the way real-time messaging apps do, with privacy built in. You decide who can reach you.
They can send up to 2 messages until you accept.
Download questions ahead of time to save data, then practise on the go with no internet.
Keep a notebook of formulas and key points. OOOR can save to it and edit your notes for you.
Share your interactions and see your current stage on the leaderboard.
Group and private calls, alongside your chats. You choose who is allowed to call you.
Browse the internet through the Hxf in-app browser without leaving the app.
Real information on exam dates and more. Share your thoughts and stay informed.
From inside any group, start a synced exam, ask the AI, send a short clip or start a video chat.
Read exam summaries of the novel so the story is clear before the exam.
Safety and privacy
Students should be able to chat without being spammed, scammed or added to places they never agreed to. Here's how Zindryx protects you.
If an account keeps acting fraudulently and gets reported several times, it is blocked. Their messages are then visible only to themselves. No one else sees them. The block stays until our server unblocks the account.
Questions about the app? Our team answers students inside the app, in real time.
See it work
Drag the bar below, swipe, or hold Shift and scroll to move between demos.
FAQ
JAMB and WAEC. It started for JAMB students and now covers secondary school standard education. It is not for Post-UTME.
Mathematics, English Language, Physics, Chemistry, Biology, Economics, Government, Literature in English, Commerce, Geography, CRK and Further Mathematics. You can also add an optional topic, like quadratic equations.
You can use the platform areas, like chat and calls, as a study-focused space. We don't guarantee learning content for higher-institution courses.
Not yet. For now you can download the app directly from the download page, where every version is listed.
Yes. Download questions while you're online, then practise offline later. It also saves your data.
Only the group's name, photo and member count are shown before joining. Never message content.
Yes. The group admin can revoke a link at any time from group info, even before it expires.
Invalid: no invite with that code exists, so check for a typo. Expired: it passed its expiry date. Revoked: the admin cancelled it. For expired or revoked links, ask the group admin for a new one.
The link had no invite code. Paste your code on the home page, or ask the admin to send the link again.
Messages and group data are stored on Google Firebase Firestore. Invite links are checked and joins are processed against Firestore's security rules. Read our Privacy Policy and Terms & Conditions for details.
OOOR stands for Out Of Ordinary Response. It combines several large language models working together to give the best result in the most efficient way.
You aren't. Accounts blocked for fraud have their messages shown only to themselves. If you see someone behaving badly, use the report button.
Support
support@hxfhub.com
Our Zindryx team replies to account and login issues.
Use real-time in-app support to ask questions and get answers fast.
Download Zindryx and join a practice room today.
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