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How to change the look of MemoKey

MemoKey’s look is set in Settings → Personalization. The theme and the app icon are free; custom colors, Wallpaper colors and a background image come with Pro.

Light, dark or system theme

Open Settings → Personalization → Appearance and choose Light, Dark, or System to follow your phone. The MemoKey keyboard uses the same theme as the app.

On iPhone and iPad with iOS 26 or later, the same screen also has a switch for the clear glass effect.

Set your own colors

  1. 1. Open Custom colors

    Go to Settings → Personalization → Custom Colors. Without Pro, MemoKey shows the upgrade screen first; once you buy or restore Pro there, you carry on where you were.

  2. 2. Pick the colors

    Choose colors for the parts of the app, such as the background, the note cards and the text.

  3. 3. Tap Done

    Done saves your colors. If a text color is too hard to read on its background, MemoKey says so and does not save until you pick a clearer one.

  4. 4. Leave without saving, if you change your mind

    Going back with unsaved changes asks whether to Discard them or Keep editing, so a tap by mistake never loses your work.

Why MemoKey refuses some text colors

Text must have a contrast of at least 4.5:1 with the color behind it. That is the level the Web Content Accessibility Guidelines (WCAG) set for normal text, so notes stay readable in sunlight and for people with weaker eyesight.

If you only change the accent color, it is used in both light and dark theme. Once you change a background or card color, MemoKey keeps your whole set of colors as one palette.

Wallpaper colors on Android

From MemoKey 3.6, on Android 12 or later, Settings → Personalization has a Wallpaper colors switch: MemoKey takes its colors from your wallpaper and changes with it when you set a new one. Turning it on needs Pro.

While it is on, the wallpaper colors are shown instead of your custom colors; turn it off at any time, with or without Pro, and your custom colors come back. The MemoKey keyboard and the widgets keep their own colors.

A background image

With Pro, you can pick a photo of your own as the background of the home screen. MemoKey scales it down to at most 2,048 pixels on its longest side and keeps it on your phone; the copy the photo picker made is deleted.

You can remove the background at any time, with or without Pro.

The app icon: new or Classic

Open Settings → Personalization → App Icon to choose between the new MemoKey icon (Default) and the Classic teal notepad. The row shows a PRO badge, but choosing an icon is free.

You can switch back whenever you like.

Text size

MemoKey has no text size setting of its own: it follows the text size you set for your phone (Text Size or Larger Text on iPhone, Font size on Android).

If Pro ends

Nothing you already set up is taken away. Your custom colors, Wallpaper colors and your background image stay as they are, and you can still turn off Wallpaper colors or remove the background.

Pro is only needed for new changes: saving new colors with Done, turning Wallpaper colors on, or picking a different background image. The theme and the app icon stay free.

What MemoKey Pro includes

Still stuck? See the FAQ or Support page.