You can register now and then upgrade within the application. You have 30 days to test the full feature set before you are going back to the (forever) free basic account.
Basic - Forever Free
no fees
0
Focused Searching / Reading
Anonymous Surfing
Fulltext Search
Save max. 400 Documents
Pocket Integration
Own Document Upload
Topic Extraction
Topic Search
Pro - Regular
Monthly Subscription
4.35
Focused Searching / Reading
Anonymous Surfing
Fulltext Search
Save > 400 Documents
Pocket Integration
Own Document Upload
Topic Extraction
Topic Search
Pro - Economic
Yearly Subscription
47.40
Focused Searching / Reading
Anonymous Surfing
Fulltext Search
Save > 400 Documents
Pocket Integration
Own Document Upload
Topic Extraction
Topic Search
Discount 10%
Enterprise
Ask For A Quote
Focused Searching / Reading
Anonymous Surfing
Fulltext Search
Save > 400 Documents
Pocket Integration
Own Document Upload
Topic Extraction
Topic Search
Team Collaboration
Single Sign-In