Whether you’re finding directions to your hotel or checking tomorrow’s weather forecast, your smart phone might just be your best friend while traveling. For almost every unforeseen issue a vacation can bring, there’s an app to solve it. Prepare yourself for a stress-free excursion by downloading these four problem-solving apps for travel.

Packing Pro

How many times have you reached your vacation destination and realized you forgot to pack that toothpaste, swimsuit, or pair of shoes from home? Never again will you neglect your vacation essentials. Packing Pro allows you to create custom packing lists from items in dozens of categories, or check off sample lists based on where you’re going.

Packing Pro | for iPhone | $2.99

Hotel Tonight

With this app, last-minute planning pays off. Whether you’re stuck without a room or taking your chances on a spur-of-the-moment night, Hotel Tonight will help you find a place to stay for up to 70 percent off. Though, like its name implies, Hotel Tonight only lets you book for the night-of, the app in an infallible way to find amazing deals on the fly.

Hotel Tonight | for iPhone and Android | free

Postagram Postcards

    Does everyone back home expect a souvenir from your travels? With a few taps, you can send them a personalized postcard. For 99 cents, Postagram prints and sends a picture and message of your choice. It’s an old school way to show your friends and family that you’re thinking about them, wherever you are in the world.

Postagram Postcards | for iPhone and Android | free

Sitorsquat

 The only thing worse than a dirty bathroom is not having one at all. Not only will SitOrSquat find you a nearby place to go, it rates public bathrooms’ cleanliness and provides reviews from other users (if you have time to read them).

SitOrSquat |for iPhone and Blackberry | free