How the timer and minutes billing work (simple)
The voice engine is designed for realistic timed delivery. To keep it predictable, time is used in small blocks (typically 5‑minute blocks). Starting a session uses blocks based on the session length you choose — and you can extend in +1 block steps.
Practical rules of thumb
- Start short: pick the shortest session that matches your goal (e.g., 5 minutes for a tight viva run).
- Extend only if needed: add another block when you hit the timer.
- More reps usually wins: short repeats often teach structure faster than long one‑take sessions.
- Top‑ups stack: if you already have plan minutes, these add extra buffer.
“Add to cart” routes to the cart so it’s obvious the pack was added successfully.
Choose your Oral Simulation Minutes top‑up
Tap to flip each pack for details. Minutes are shared across Viva, Viva Tutor, and Simulation. If you already have plan minutes, these top‑ups stack on top.
250 Oral Simulation Minutes
Best for consistent out‑loud practice (daily station rehearsal).
125 Oral Simulation Minutes
Best for a focused block (weekend sprint or targeted weak areas).
50 Oral Simulation Minutes
Quick top‑up for extra reps (a few sessions this week).
Prices shown in GBP • “Add to cart” goes to cart so it’s obvious the pack was added successfully.
A simple loop for best value and better reps
The voice engine is timed to keep sessions realistic and predictable. To avoid wasting minutes, start short and extend only when needed.
- Pick a short session (e.g., 5 minutes) to run a tight station.
- Deliver out loud — practise structure, pace, and calm delivery.
- Extend only if needed (+1 block) when you hit the timer.
- Repeat short runs to lock in format and reduce hesitation.
Top‑ups add extra buffer on top of any monthly minutes included in your plan.
Oral Simulation Minutes — quick answers
Everything you need before purchasing a top‑up pack.
What are Oral Simulation Minutes used for?
They power the full‑screen voice engine — including Viva‑style sessions, Tutor‑style sessions, and communication role‑play simulations. Anywhere you practise out loud inside the voice engine uses minutes.
Are minutes tied to a specific exam or course?
No. Oral Simulation Minutes are not exam‑specific. They’re a shared balance you can use wherever you practise in the voice engine.
How does the timer/minute deduction work?
The system uses small time blocks (typically 5‑minute blocks) so billing is predictable. A session uses blocks based on the session length you choose, and you can extend by adding another block.
Tip: start shorter and extend only if needed — it usually gives the best value.
Which pack should I choose?
50 minutes is best for a quick top‑up. 125 minutes fits a focused block. 250 minutes is usually best value if you’re practising consistently (daily reps).
Can I buy multiple packs?
Yes — you can purchase multiple packs. They’ll add to your Oral Simulation Minutes balance.
Do top‑up minutes expire?
If any minutes have an expiry window (e.g., trial minutes), the app will show an “expiring soon” label in your minutes view. When possible, the system spends minutes that expire sooner first.
Why does “Add to cart” go to the cart?
So it’s obvious the pack was added successfully. From the cart you can adjust quantities and checkout normally.
I bought minutes but they didn’t appear — what should I do?
First, confirm you’re logged into the same account you used at checkout. Then refresh the app and check your Account → Oral Simulation Minutes view. If it still hasn’t updated, contact support with your order number and account email.
OtoPrep is an independent educational resource and is not affiliated with any examining body.