Docs · iPhone · 4 min read

Set it up by hand

Dwindle automates these steps for you, but you can build the same thing yourself in Settings and the Shortcuts app: no jailbreak. It’s fiddly the first time; follow the order exactly, because the way out is taught first. iPhone only: it uses Apple Shortcuts and accessibility Color Filters. On Android, Dwindle does this itself, and there is no manual route to build, only the one-time unlock.

1. 1

   The gesture, first

   Before anything can dim your screen, learn how to undo it. Triple-click the side button (the Home button on older iPhones). The screen turns gray. Look at it for a second. Triple-click again, and color comes straight back. Do it once more so it’s in your fingers.

   This works even with the app force-quit, every automation deleted, and no network, because it’s an iOS accessibility shortcut, not something Dwindle runs. Dwindle cannot see you do it. It’s your escape hatch, always.

2. 2

   Prime the filter

   Settings › Accessibility › Display & Text Size › Color Filters → turn On → choose Grayscale → drag Intensity all the way to the right (maximum) → turn Color Filters back off. Full-strength grayscale is the only intensity the studies measured, so that’s what you set.

   For the optional dim (a second, gentler stage): Settings › Accessibility › Display & Text Size › Reduce White Point → on → set it where the screen is dim but still readable → turn it back off.

3. 3

   Assign the triple-click

   This is what makes step 1 actually do something. Settings › Accessibility › Accessibility Shortcut (at the bottom) → tick Color Filters, and untick everything else. (With more than one ticked, the triple-click asks you to choose instead of just working.) Leave Settings and test: triple-click → gray → triple-click → color.

   Add a backup while you’re here: Settings › Control Center → add Color Filters, so you have a second way out if the triple-click is ever reassigned.

4. 4

   Build the per-app pair

   Each app you want to dim needs two shortcuts and two automations. First build the two shortcuts in the Shortcuts app (an automation can’t hold the steps itself; it points at a shortcut): one that turns Color Filters on once a session passes its grace period (five minutes, 300 seconds, by default), and one that turns them off when you close the app.

   Then bind the automations: Shortcuts › Automation › + → under Setting triggers tap App → Choose → pick the app → Done → tick Is Opened → turn Run Immediately on → Next → Choose Run Existing Shortcut, and do not add any actions here → pick your shortcut → Done. Repeat with Is Closed for the close shortcut.

   Two things that quietly go wrong: iOS 26’s “new blank automation” with inline actions doesn’t fire, so always pick an existing shortcut. And after saving, check the automation’s switch is on; a new one can arrive switched off and look identical to a working one.

5. 5

   Two optional extras (skip either)

   You’re done at step 4. These are extras, and doing nothing is a complete answer.

   The evening flip is a pair of Time-of-Day automations: the whole phone goes gray at a set hour (say 21:00) and back to color in the morning (say 07:00). Build both, or the phone gets stuck whichever way the surviving one left it.

   The dim relay (fade to dim, not just gray) adds a couple of Focus automations. Create the Focus modes first: Settings › Focus › + › Custom → name them (e.g. DwindleS1 / DwindleS2), with no schedule, people, or allowed apps.

6. 6

   The one-time permission

   The first time an automation runs, iOS asks once whether to allow it. Tap Allow. It doesn’t ask again: in testing it appeared once and then stayed quiet for the next nineteen runs and counting. If you tap Don’t Allow, the automation is blocked and the setup is undone.

   That’s a setup-time cost, not a mid-session interruption: once you’ve allowed it, Dwindle is silent and never prompts you while you’re using an app.