Persever is the most comprehensive free application that can find to prepare for your exam PIR. Includes all the questions and answers discussed in recent tests, allows you to challenge your friends and gives you full statistics so you can assess your skills.

You can:
- Practice Test Questions PIR separated by thematic examination. And resolution and explanation of all solutions.
- Perform exams from previous years.
- Know your position in the ranking of national examinations.
- Challenge your mates for more fun
- Get a complete statistics to know where you need an extra point of perseverance.