Every feature has one job: more marks.
Real past questions, a CBT engine that behaves like the hall, and the analytics to tell you what to fix next. Here is everything inside PrepPlug — and why it is there.
Nine things that move the score.
Each one exists because it changes what happens on exam morning.
Real papers, 20 years deep
Every subject drawn from the actual JAMB and WAEC papers — not lookalikes — with a worked solution written for each.
The JAMB hall, rehearsed
Four subjects, one 120-minute clock, scored out of 400. The navigator, the flags, the auto-submit — all of it.
Worked solutions, every time
The right answer and the steps to it the moment you submit — maths, diagrams and the common traps.
Know exactly what to fix
Your accuracy in every subject, weakest first, and every mock in your results — so tonight’s revision goes where it moves the score.
Your misses, resurfaced
A question you got wrong comes back the next day, then at longer gaps each time you get it right — no planning on your part.
Study that pulls you back
Daily streaks, XP, badges, a weekly leaderboard and 1v1 duels — every reason to open the app tomorrow.
Watch the score climb
Every mock on one timeline, subject by subject, so you can see the climb — and show it to whoever is paying for the plan.
Study without data
The desktop app carries the whole question bank inside it. Nothing to download, no data used — practise on the bus, in the village, in a blackout.
Practise inside WhatsApp
Tap Daily quiz in the PrepPlug bot for past questions one at a time, each marked with the worked solution — no app download needed.
The JAMB hall, on your screen.
If the interface is familiar, the only thing left to think about is the question. We rebuilt the hall so it is.
- One question at a time, with a navigator showing answered, flagged and unanswered
- Flag anything for review and jump straight back to it before you submit
- A live countdown and auto-submit at zero — you learn to pace yourself
- The same 120-minute clock as UTME, across four subjects
- Scaled score out of 400 with a subject breakdown the moment you submit
Learn the method, not just the letter.
An answer key tells you that you were wrong. A worked solution tells you why.
- Step-by-step working for every question, with proper maths notation and diagrams
- Still stuck? Ask a follow-up question about that one solution
- Available the moment you submit — in practice, mocks and the simulator, on Student Pro
Know exactly what to fix tonight.
Every answer updates your accuracy in each subject, and your home page leads with the weakest — so tonight’s revision goes where it moves the score.
- Accuracy per subject that updates with every question you answer
- Your weakest subjects first, the moment you open the app
- A per-subject breakdown of every mock the moment you submit
- Every past session in your results, so you can see the climb
Your misses come back until they stick.
Spaced repetition, done for you. A question you get wrong comes back the next day. Each time you get it right the gap widens; miss it again and it starts over.
- Nothing to plan — the queue builds itself from your mistakes
- A “due today” list you can clear in fifteen minutes
- Works across practice, mocks and the simulator
Six ways to study, one question bank.
Different days need different sessions. Pick the one that fits the hour you have.
Practice
Untimed, with instant feedback after each question. Build the topic before you race it.
Timed mock
Your subjects against the clock, each on its own time limit, scored the moment you submit.
JAMB simulator
Four subjects, every question from that year's papers, one 120-minute clock, scored out of 400.
Daily challenge
Five questions a day across your subjects. Keeps the streak alive and the syllabus warm.
Revision
Only the questions you have missed, brought back on a schedule until you stop missing them.
Duel
The same ten questions for you and a friend. Share a code, both play, the higher score wins.
Studying that feels like levelling up.
A daily streak you will not want to break. XP for every question. Badges for the milestones that matter. A weekly leaderboard — and duels when you want to settle it with a friend.
- Streaks reset at midnight — the daily challenge keeps them alive
- XP and badges are free for everyone
- Leaderboards reset weekly, so a bad week never buries you
Study on every screen.
Start a mock on the web, review the solutions on your phone, keep your streak going on WhatsApp — one account, one progress. The desktop app stands on its own and works with no network at all.
Past questions in the app you already open.
Open the PrepPlug bot and tap Daily quiz. It sends one past question at a time, marks your answer, and follows with the worked solution.
- Works on any phone with WhatsApp — no download, no storage
- Text-first, so it is light on data and fine on a weak network
- Link the chat to your account and your streak and XP carry over
- Tap My progress for your streak, XP and accuracy
Made for the network, the phone and the wallet you have.
Naira pricing
₦1,800 a month, ₦3,600 for three months, ₦6,000 for six. No dollar conversion, no card declines from FX, no price that moves with the exchange rate.
Paystack
Pay by card, bank transfer or USSD. Nothing renews automatically. Schools pay per term.
Light on data
Text-first pages, images only when a question needs one, and the whole bank built into the desktop app.
Offline mode
The desktop app holds the bank itself — practise through a blackout, on no network at all.
WhatsApp study
For the phone that will not run another app — or the network that will not load one.
School CBT labs
A desktop app for lab machines, with the whole question bank built in — it needs no network at all.
Start free. Go Pro when you are ready.
Everything on the free plan is genuinely useful. Pro is for when you want all of it.
| Free | Student Pro | |
|---|---|---|
| Past questions | 30 a day · full bank | Unlimited · full bank |
| Timed mocks | Within your 30 a day | Unlimited |
| JAMB simulator (4 subjects, /400) | ||
| Worked solutions | ||
| Subject analytics & results history | ||
| Smart revision | ||
| Offline mode (desktop) | ||
| Streaks, XP, badges, leaderboard | ||
| WhatsApp quiz |
Feature questions, answered.
Is the CBT simulator really like the JAMB hall?
Yes — one question at a time, a navigator showing answered, flagged and unanswered questions, a live countdown, and auto-submit at zero. It serves every question from your four subjects' papers for the year you pick, on one 120-minute clock, scored out of 400.
Do worked solutions cover maths and diagrams?
Yes. Solutions are written step by step with proper mathematical notation and figures where the question needs them.
How does smart revision decide what to show me?
Every question you miss comes back the next day. Each time you get it right the gap widens — a day, then three, then about a week, then longer. Miss it again and it starts over from tomorrow.
Can I study offline?
On the desktop app, yes. The question bank is built into the app, so there is nothing to download and no data is used. Results are kept on that computer.
What can I do on the WhatsApp bot?
Tap Daily quiz and it serves past questions one at a time, marks your answer and sends the worked solution. Link the chat to your account and your streak and XP carry over.
Which features are free?
Thirty questions a day from the full bank, in practice or timed mocks, with your score and which answers were right. Analytics, smart revision, the WhatsApp quiz, streaks, XP, badges and the leaderboard are free too. Student Pro removes the daily limit and adds worked solutions, the JAMB simulator and offline mode.
Your first mock takes fifteen minutes.
Create a free account, pick a subject, and see your first worked solution today.