You can find all your purchased apps in the "Purchased" section of App Store.

  1. Tap App Store.
  2. On an iPhone or iPod touch: Tap Updates, then tap Purchased.
    On an iPad: Tap Purchased.
  3. Scroll to find the app that you want to download.
  4. Tap the Download icon  .

After the app downloads, you can open it from your Home screen.