The Greek Text used in this app is NOT the Textus Receptus. It is using the corrupted Westcott & Hort and derived Nestle Aland so called “critical text”, which has been gutted with 2200 Greek words removed, and has been “critically wounded”.
For example, the Greek Text used in this app has the gutted Nestle 1904 version of 1 John 5:7...
ὅτι τρεῖς εἰσιν οἱ μαρτυροῦντες,
Rather than the full TR version which it claims to use:
ὅτι τρεῖς εἰσιν οἱ μαρτυροῦντες εν τῷ οὐρανῷ, ὁ πατήρ, ὁ λόγος, καὶ τὸ Ἅγιον Πνεῦμα· καὶ οὗτοι οἱ τρεῖς ἕν εἰσι.
And then in John 1:18, it also has the corrupted Nestle version which reads “μονογενὴς θεὸς” (“begotten god”)...
θεὸν οὐδεὶς ἑώρακεν πώποτε· μονογενὴς θεὸς ὁ ὢν εἰς τὸν κόλπον τοῦ πατρὸς ἐκεῖνος ἐξηγήσατο.
Rather than the correct “μονογενὴς υἱός” (“begotten Son”) which is used in the correct TR version:
Θεὸν οὐδεὶς ἑώρακε πώποτε· ὁ μονογενὴς υἱός, ὁ ὢν εἰς τὸν κόλπον τοῦ πατρός ἐκεῖνος ἐξηγήσατο.