Dear Holly Cook,
Thank you for your comment on the user forum.
Triple engines of Lunascape for Windows mean not triple search engines but triple rendering engines (=web browser engine).
Below is a brief explanation of rendering engine.
We keep developing and updating triple engines on Lunascape, so you can use them even now.
Please use our Lunascape for your comfortable web browsing!
In addition, iLunascape for iOS and Android does not have triple rendering engines.
We do not have a plan to add another rendering engine for iLunascape now.