I wondered the same thing before I bought one. Strips were fine until they weren’t. One day pH looked “okay”, next day it looked high depending on the light, then the pool store would tell me something totally different. That back and forth had me adjusting chemistry way too often, especially after parties when bather load was high and everything felt out of sync.
What changed with a digital tester wasn’t just accuracy, it was consistency. Seeing an actual number made pH drift obvious instead of a color guess. I started noticing small swings before they turned into bigger problems, like alkalinity slipping and pH bouncing all over the place. I use the aquadoc eagle ray during the week for quick digital checks, mostly to keep an eye on pH and chlorine trends, then still do a full liquid drop test once a week to back it up.
So yeah, I wouldn’t say digital testers are magic or that strips are useless. Strips are fine for a fast “is this totally off?” check. But if you’re trying to actually keep things stable and avoid overcorrecting, digital makes life calmer. Less guessing, fewer chemical dumps, and the water just behaves better overall. That alone made it worth it for me.