This projector comparison will compare APEMAN M4 with APEMAN LC550, to shed some light on the two mini projectors and to see which is a better one. As portable mini projectors, APEMAN M4 and APEMAN LC550 differ in many other aspects, this projector comparison will review both of them from the following perspectives:

Appearance & portability

APEMAN M4 projector is shaped in a flat cuboid in grey and black and is measured at 98x98x21.6mm. APEMAN LC550 projector is shaped in a bigger white cuboid and is measured at 220x170x85mm, with one single kickstand attached to the bottom. APEMAN LC550 weighs 1.2kg. APEMAN M4 projector weighs only an incredible 210g, which can be truly rated as a pocket and palm-size projector.


APEMAN official website uses real lumens to describe the brightness of their products. With that said, APEMAN M4 offers 50 lumens and APEMAN LC550 offers 100 lumens. APEMAN LC550 is much brighter than APEMAN M4.

Resolution & contrast ratio

Speaking of the resolution, APEMAN M4 offers 480p image resolution, while APEMAN LC550 offers 720p image resolution. APEMAN LC550 has a higher resolution than APEMAN M4 does. As for the contrast ratio, APEMAN M4 and APEMAN LC550 provide the same contrast ratio of 1000:1.

Display technology

LCD display technology is adopted by both APEMAN LC550, while APEMAN M4 is equipped with the more updated DLP display technology. Generally speaking, DLP is more advanced than LCD in the projector world. Probably it is one of the reasons that APEMAN M4 is twice expensive than APEMAN LC550 projector.

Keystone correction

APEMAN LC550 is featured with manual keystone correction of vertical±15 degrees, while APEMAN M4 doesn’t support keystone correction, which means users need to have APEMAN M4 positioned perfectly to get an undistorted image.