Zaplingo offers Free Trial, but Re:Eng does not.
Pricing for Re:Eng Starts at $4.99/month whereas for Zaplingo Starts at $2.99/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
