Amazon Echo Show 15 vs Amazon Echo Show 21

Amazon Echo Show 21 wins on the strength of its much larger 21-inch screen, the feature that defines this category. Amazon Echo Show 15 is the more affordable version of essentially the same device, with a 15.6-inch panel at the same Full HD resolution.

Almost only size and price. Both offer Fire TV with a remote, Alexa and Alexa+, widgets, a camera with shutter, wall mounting and Zigbee, Thread and Matter hub radios. The Show 21 spreads the same 1920 x 1080 pixels across a much bigger panel for cross-room readability.

No, sharper it is not: both are 1920 x 1080, so the Amazon Echo Show 21 has lower pixel density than the Amazon Echo Show 15. In practice the 21 is meant to be viewed from farther away, where the difference disappears and the size advantage dominates.

Yes. Owners of both note mediocre built-in sound for TV duty (many add a soundbar, especially on the 21), on-screen promotional content until disabled, and an Alexa+ experience that is still maturing and works only in landscape orientation.

Choose Amazon Echo Show 15 for kitchens and offices where a 15.6-inch noticeboard is plenty: same widgets, Fire TV and hub radios at a meaningfully lower price.

Choose Amazon Echo Show 21 for large kitchens or common rooms where the screen doubles as the household TV and dashboard, readable across the space, and budget for external audio if movies matter.