Yes, both Kvery and EZQL offer a Free Trial.
Pricing for Kvery Starts at $89.9/month whereas for EZQL Starts at $20/month.
Kvery offers several advantages, including Simplifies SQL queries, User-friendly design, Interactive IDE, Optimized SQL code, Multi-database support and many more functionalities.
The cons of Kvery may include a Requires JavaScript to run, May not support all SQL database systems, No mention of mobile support, Web-based: Internet dependency. and No offline version available
EZQL offers several advantages, including User-friendly database interface, No SQL writing required, In-line data editing, Blocks of SQL queries, Shareable queries and many more functionalities.
The cons of EZQL may include a Mac only, No Oracle DB support, Embeddable charts not available, Templates not yet implemented. and No offline mode