Yes—software-only calibration can be a useful stopgap, but it won’t be as accurate or consistent as a hardware calibrator. Visual calibration depends on your eyes, room lighting, and the monitor itself, so results can vary.

Still, it’s generally better than doing nothing. Options mentioned include:

• Windows: Quick Gamma
• macOS: ColorSync
• Linux: Monica, if available through your distribution

Many operating systems also include built-in display calibration tools, which can help you set gamma, brightness, contrast, and color balance by eye.

The key expectation is this: software-only calibration may improve your screen’s appearance, but it cannot truly measure and correct color the way a hardware device can. If color accuracy matters for editing and printing, a hardware calibrator remains the long-term solution.