Energy, hints and Premium: how they work
Energy is the app's free currency. You get 5 energy every day, a hint costs 1, and you can earn more by watching a short video (+3) or inviting friends (+10 each). Energy also unlocks Premium features for a while, such as 24 hours of full Premium for 30 energy. Premium removes ads and makes hints and reviews unlimited.
Get energy
- Every day: your energy is topped up to 5.
- Watch a short video: +3 energy.
- Invite a friend with your code: +10 energy for you and +5 for your friend, plus 3 days of Premium for every 3 friends.

Spend energy
| Use | Cost | Lasts |
|---|---|---|
| Hint for a question | 1 | One hint |
| 10 more mistake reviews today | 2 | Today |
| Logo and name on one shared quiz | 3 | One share |
| Detailed results and exact estimate | 5 | 24 hours |
| Widget extras | 10 | 7 days |
| Another focus music track | 15 | Forever |
| Full Premium | 30 | 24 hours |
Premium plans
Premium removes all ads and gives unlimited hints, unlimited reviews, detailed results, all focus music, widget extras and your own branding on shares. Choose a weekly, monthly or 3-month subscription, or a one-time lifetime purchase. Prices are shown in the app in your local currency.
Subscriptions renew automatically and can be cancelled anytime in your App Store or Google Play account settings.
Frequently asked questions
Do I need an account?
No. Energy, unlocks and purchases are saved on your device and restored with your App Store or Google Play account.
What happens when I run out of energy?
You can keep practising every question for free. Only hints and unlocks need energy; it refills to 5 the next day.
Can I try Premium before buying?
Yes. Spend 30 energy for 24 hours of full Premium. You can collect it from daily energy, videos and invites.

