Yes, both Zaplingo and TalkOn offer a Free Trial.
Pricing for Zaplingo Starts at $2.99/month whereas for TalkOn Starts at $3.99/month.
Zaplingo offers several advantages, including 24/7 availability, Low-pressure learning environment, Supports audio messaging, Offers real-life conversation practice, Clear grammar explanations and many more functionalities.
The cons of Zaplingo may include a Requires WhatsApp, No video messages, Dependent on phone connectivity, No multi-user support. and Exclusively mobile-operational
TalkOn offers several advantages, including Designed for iPhone, Real-time chat, Learning and practicing English, Strong learning aid functions, Covers business and daily English and many more functionalities.
The cons of TalkOn may include a iOS exclusive, No desktop version, Requires iOS 11.0 or later, Limited languages supported. and Limited age rating 4+