An iPhone app calculates where every nail goes before you hang a gallery wall
Planning frames is the easy preview; accounting for the hidden hanging hardware prevents extra holes.
A gallery wall can look perfectly spaced until the wire on the back of one frame changes where its nail belongs. WallHang works out the support points from the dimensions and hanger details you supply. The attractive rectangle and the hole in the wall finally get separate appointments.
The maker’s site describes a plan built from wall measurements, outside frame sizes and the chosen hanger. Nail coordinates are referenced to the floor and left edge of the wall. That makes the output something a person can mark from fixed references rather than repeatedly estimating the gap between neighboring pictures.
Morrowfield Labs identifies WallHang as one of its two focused apps. The app’s own page lists a free tier for one wall and up to four frames. Pro costs $7.99 once and adds unlimited walls, up to 20 frames per wall, a PDF sheet and an AR preview, with Family Sharing.
The most important qualification sits below that pricing. The maker calls photos and AR previews “visual references, not measuring tools.” Coordinates depend on the dimensions entered. That distinction matters before a beautifully aligned virtual frame persuades somebody to make a very real hole in the wrong place.
Start with a small arrangement and compare one support point against the physical frame. That puts the entire chain on trial: the wall reference, the dimension, the hanger and the mark. Finding a mistaken input at that point costs another measurement. Finding it after all twenty pictures are hung creates a much more ambitious redecorating project (spackle sold separately).
The printable sheet sounds especially practical when a phone is competing for attention with a tape measure and somebody holding a frame. A stable plan gives both people the same reference. It still needs to account for what the wall can support, because a perfect coordinate doesn’t choose the right fixing or tell a weak surface to become stronger.
The official page puts precise limits on the free tier and separates the optional AR preview from the measurements used for hanging. The physical check remains the part that counts.
The useful win is fewer rounds of holding, guessing, moving and holding again. A wall planner helps when a person can put down the phone and make the intended mark with confidence. It still can’t stop somebody else in the room deciding the whole group should move an inch to the left.
At least the nail has coordinates.