Free Tree ID app from the Woodland Trust

The Woodland Trust's Tree ID app is free to download for iPhone and Android and helps you work out what tree you're looking at, whatever the season. It uses leaves, bark, twigs, buds, flowers or fruit to narrow things down, covering native and common non-native UK trees - handy on a woodland walk. Just grab it from the App Store or Google Play; there's nothing to pay and no sign-up needed for the app itself.