Which size should I design App Store screenshots at?
Design at 1320 × 2868 px, the largest iPhone screenshot size, because App Store Connect can scale the largest set down for smaller iPhones when your UI looks the same. If App Store Connect still asks for the required 6.3-inch slot, export the same design at 1206 × 2622.
Design iPad separately at 2064 × 2752; the 3:4 canvas needs its own layout.
Frequently asked questions
Should I design at 1x or 3x?
Work at any resolution with the right aspect ratio, then export at the exact pixel size.
Why not design at 1179 × 2556?
Scaling up later blurs; designing at the largest size keeps every export sharp.
Does Google Play use the same size?
No; design a 9:16 version for Play.