Okimia does not have a dedicated mobile app, but its interface is designed to adapt to your screen size. To access Okimia easily from your smartphone or tablet, you can add a shortcut directly to your home screen. Here's how.
On iPhone
Open Safari and go to app.okimia.com;
Tap the share icon (square with an arrow) at the bottom of the screen;
Scroll down and tap Add to Home Screen;
Name the shortcut Okimia, then tap Add.
On Android
Open Chrome and go to app.okimia.com;
Tap the three dots in the top right corner;
Tap Add to Home Screen;
Name the shortcut Okimia and tap Add.