Apps built on a grid of cells
After two panes, a canvas with no edges and a timeline, the fourth shape a screen gets asked to take: a grid, where what you can see is what you can reach.
A grid is the one layout whose benefit can be counted rather than argued. Every cell on screen is something that can be hit without navigating to it first, and every cell that does not fit is a swipe, a page or a menu standing between an intention and the thing it was for. There is nothing subtle about it: a grid with more cells visible is a larger instrument.
The apps here are the ones whose primary interface is a grid rather than a document. Several of them are grids because a piece of hardware is a grid, and the app is that hardware redrawn at whatever size the screen happens to be — which is a redrawing that has only ever gone one way on a phone.
The order runs from apps where the grid is the instrument to apps where it is how you choose what to open.
- 1
Launchpad - Music & Beat Maker
Focusrite Audio Engineering Ltd.
The grid is the product: a remixing instrument from the company that makes the hardware version, and the hardware is a square of pads because that is what a pair of hands can cover. A phone cannot show that square at that size, so what it shows is a portion of an instrument with the rest of it behind a gesture.
- 2
Koala Sampler • Beat Maker
Mazbox Limited
Record something with the microphone, chop it up, and play it back off pads. The recording half works anywhere and is the reason it is called a sampler designed for a pocket. The playing half is a grid being hit in time, where a pad missed because the pads are small is a mistake with a sound attached to it.
- 3
GarageBand
Apple Distribution International
Live Loops is the grid half of an app whose other half is a timeline: cells triggered in columns to build a track by arrangement rather than by recording it in one pass. Both halves want width, and this is the half where the gain is countable — a cell either fits on the screen or it does not.
- 4
djay - DJ App & AI Mixer
Algoriddim GmbH
Decks, a mixer, cue points and a library, all of which want to be visible while a mix is happening and none of which can be. Side by side it is the shape of the hardware the app is modelled on. Stacked, it is a sequence of screens to swap between at the one moment in the evening when there is no time to swap a screen.
- 5
Photos
Apple Distribution International
The library every other photo app on the site reads from, presented as a grid of thumbnails to scan rather than read. Scanning is a visual search, and a visual search is faster with more of the collection in front of you. The first entry here where the grid is looked at rather than played.
- 6
Google Photos: Backup & Edit
Google LLC
The same grid for anyone whose pictures are spread across more than one account, with search doing more of the work of finding. The results are a grid too, which is the point of putting it last: an answer made of pictures is taken in all at once or it is not taken in at all.
The selection and the order are ours. Each entry is written from that app’s own App Store listing, linked beside it, and this page from Apple's iPhone Duo product page. Drafted with AI assistance and checked back against those sources before publishing; the disclosure page explains how. The iPhone Duo has been on sale since 23 October 2026 and nothing here has been seen running on one, so what each entry says about the fold is an argument rather than a test.