Speed Lab is each level's quick-practice mode. Instead of longer exercises, you answer a series of short questions, each with a time limit of a few seconds.
- How to open it: on the home screen, tap the small lightning-bolt bubble on an unlocked level to switch to Speed Lab.
- Results: at the end you'll see your accuracy, your reaction time per question, and an analysis of your response speed.
- Pause: if you leave mid-round or reach the free limit, the app saves your progress so you can resume later.
- Limit: in the free version Speed Lab has its own daily limit; with Premium it has no limit.