Spyder4Express is a simple and affordable solution for calibrating a monitor.
Spyder4Express features a patented, full-spectrum 7-colour sensor that can accurately characterise a variety of wide gamut and normal displays. Spyder4Express software lets you use the same sensor to calibrate your monitor, laptop computer, iPad and iPhone. No other calibrator has this capability. The fourth-generation sensor uses double-shielded filters for longer life and better performance. On average, accuracy and precision are improved by 26% and 19% respectively. Spyder 4 Express website.