Why do apps offer dark mode?

Answer: Reduce eye strain and battery use

Make text larger — Wrong. Dark mode doesn't change text size—it swaps the colors so the background is dark and the text is light. The point is comfort and saving battery, not making words bigger.

Use less data — Wrong. Dark mode doesn't affect data usage—it's just a display setting. The real benefits are less eye strain and battery savings on OLED or AMOLED screens.

Reduce eye strain and battery use ✓ — Correct! Dark mode helps in two main ways. First, it reduces eye strain, especially in low light, because less bright light hits your eyes. Second, on OLED or AMOLED screens, black pixels are actually turned off, so a darker screen uses less power. Some people also just find it easier to read or like the look, and less blue light at night might help you sleep better. It really comes down to personal preference.