What Is an App? A Simple Explanation for Seniors

If you have ever heard someone say "just download the app" and felt a little lost, you are not alone. The word "app" gets thrown around constantly, but nobody ever seems to explain what it actually means. This guide will walk you through everything you need to know about apps in plain, simple English.

What Is an App?

An app is short for application. It is simply a program that runs on your phone or tablet and does one specific job.

Here is an easy way to think about it. Imagine your smartphone is a toolbox. Each app is a different tool inside that toolbox. One tool helps you make phone calls. Another helps you check the weather. Another lets you take photos. Each tool (app) has its own purpose.

You have been using apps on computers for years without realizing it. If you have ever used Microsoft Word to write a letter, that is an application. If you have ever played Solitaire on a computer, that is an application too. Apps on your phone work the same way, they are just designed for a smaller screen and for tapping with your finger instead of clicking with a mouse.

When you look at your phone's home screen and see all those little square icons, every single one of those is an app.

Types of Apps

Not all apps are the same. Here are the main types you will come across.

Built-in Apps vs. Downloaded Apps

Built-in apps come already installed on your phone when you buy it. You do not need to do anything to get them. Examples include:

The Phone app (for making calls)
The Camera app (for taking photos)
The Calculator app
The Clock app (for alarms and timers)
The Settings app (where you control how your phone works)

Downloaded apps are ones you choose to add to your phone yourself. You go to a special store on your phone, pick the app you want, and install it. More on how to do that in a moment.

Free Apps vs. Paid Apps

Most apps are free to download. WhatsApp, Google Maps, YouTube, and many weather apps cost nothing to put on your phone.

Some apps cost money, usually between one and ten dollars. You pay once when you download them, and they are yours to keep.

There is also a third category you should know about: free apps with in-app purchases. These are free to download, but once you start using them, they may ask you to pay for extra features. We will talk more about this later because it is important to understand.

Where Do You Get Apps?

You get apps from a special store that is already on your phone. Which store you use depends on what kind of phone you have.

If you have an iPhone (Apple): You use the App Store. Look for a blue icon with a white letter "A" on your home screen.
If you have an Android phone (Samsung, Google Pixel, Motorola, etc.): You use Google Play Store. Look for a colorful triangle icon on your home screen.

Think of these stores like a shopping mall, but instead of clothes and shoes, they sell apps. You browse through them, pick what you want, and "buy" them (even the free ones go through the store).

You do need an account to use these stores. If you set up your phone with an Apple ID or a Google account, you are already signed in and ready to go. If you are not sure whether you have an account set up, our guide on how to download apps safely walks you through the whole process step by step.

How to Download an App

Downloading an app is easier than you might think. Here is how to do it on most phones:

Open your app store (App Store on iPhone, Google Play Store on Android).
Tap the search bar at the top of the screen.
Type the name of the app you are looking for. For example, type "WhatsApp."
Look at the results and find the correct app. Check the name and the icon. Also look at how many people have downloaded it and what rating it has (more stars is better).
Tap the download button. On iPhone, this will say "Get." On Android, it will say "Install."
Wait a moment. Your phone will download and install the app. This usually takes less than a minute if you have a good internet connection.
Find the app on your home screen. A new icon will appear. Tap it to open the app and start using it.

That is it. You have just downloaded your first app. For a more detailed walkthrough with pictures and safety tips, take a look at our full guide on how to download apps safely.

How to Delete an App

If you decide you do not want an app anymore, removing it is just as easy as adding it.

On an iPhone:

Press and hold the app icon until a small menu appears.
Tap "Remove App."
Tap "Delete App" to confirm.

On an Android phone:

Press and hold the app icon.
Drag it to the "Uninstall" option that appears at the top of the screen. Or tap "Uninstall" in the menu that pops up.
Tap "OK" to confirm.

Deleting an app removes it from your phone, but you can always download it again later if you change your mind. Any account you created inside the app (like a WhatsApp account) usually stays saved, so you will not lose your information permanently.

How to Update Apps

App makers regularly improve their apps by fixing problems and adding new features. These improvements come as updates. Keeping your apps updated is important because updates often fix security issues that could put your information at risk.

The good news is that most phones update apps automatically. But if you want to check for updates manually:

On an iPhone:

Open the App Store.
Tap your profile picture in the top right corner.
Scroll down to see which apps have updates available.
Tap "Update All" or update individual apps.

On an Android phone:

Open the Google Play Store.
Tap your profile picture in the top right corner.
Tap "Manage apps and device."
Tap "Updates available" to see and install updates.

We recommend turning on automatic updates so you do not have to think about it. You can do this in the settings of your app store.

App Permissions Explained

When you first open a new app, it might ask you for permission to access certain things on your phone. For example:

"Can this app access your camera?"
"Can this app see your location?"
"Can this app send you notifications?"

These pop-up questions can feel alarming, but they are actually a safety feature. Your phone is asking you to decide what the app is allowed to do.

Here is a simple rule of thumb. Ask yourself: does this app need this feature to do its job?

A camera app asking to use your camera? That makes sense. Allow it.
A weather app asking for your location? That makes sense. It needs to know where you are to show local weather.
A flashlight app asking to access your contacts? That does not make sense. Deny it.

If you are ever unsure, it is perfectly fine to tap "Don't Allow" or "Deny." You can always change your mind later in your phone's settings. And the app will still work for most things even if you say no.

In-App Purchases: A Word of Caution

This is an important section, so please read it carefully.

Many free apps make their money by offering things to buy inside the app. These are called in-app purchases. Common examples include:

A game asking you to buy extra lives or coins
A photo editing app asking you to pay for special filters
A news app asking you to subscribe for full articles

These purchases are real. If you tap "Buy" and your payment information is connected to your app store account, you will be charged real money.

Tips to avoid accidental purchases:

Look for words like "Buy," "Subscribe," "Premium," or "Upgrade" and be cautious before tapping.
If a grandchild uses your phone to play games, be extra careful. Many games are designed to encourage spending.
You can set up your phone to require a password before any purchase goes through. This is a very good idea.

There is nothing wrong with paying for something in an app if you truly want it. Just make sure it is a deliberate choice and not an accidental tap.

Essential Apps for Seniors

With millions of apps available, it can be hard to know where to start. Here are some of the most useful apps that many seniors find helpful in daily life.

WhatsApp (Free)

This is the most popular messaging app in the world. You can send text messages, photos, voice messages, and make free video calls to friends and family anywhere in the world, all for free as long as you have an internet connection. If you are new to it, our beginner's guide to WhatsApp will help you get started.

Google Maps (Free)

This app turns your phone into a GPS navigator. Type in any address and it will show you exactly how to get there with turn-by-turn directions, whether you are driving, walking, or taking public transport. It also helps you find nearby restaurants, pharmacies, hospitals, and more. We have a full guide on how to use Google Maps that explains everything step by step.

A Weather App (Free)

Most phones come with a weather app built in, but if you want a better one, try "The Weather Channel" app or "AccuWeather." They show you hourly and weekly forecasts, rain alerts, and more. Very handy for planning your day.

A Health App (Free)

Both iPhones and Android phones come with a built-in health app. You can use it to track your steps, log medications, store emergency medical information, and even share health data with your doctor. Many seniors also find apps like "MyFitnessPal" helpful for tracking what they eat.

Your Bank's App (Free)

Most banks now offer a free app that lets you check your balance, see recent transactions, and even deposit checks by taking a photo. It is very convenient and saves a trip to the bank. Just make sure you download the official app from your bank (search for your bank's exact name in the app store).

YouTube (Free)

A wonderful app for watching videos on any topic you can imagine. Want to learn how to cook a new recipe? Watch a nature documentary? Listen to your favorite old songs? YouTube has it all.

Staying Safe with Apps

Apps are generally safe, but there are a few common-sense rules to follow.

Only download apps from the official store. Never download an app from a website or a link someone texted you. The App Store and Google Play Store check apps for safety before making them available. This is the single most important safety rule.

Check reviews and ratings before downloading. If an app has very few downloads or mostly bad reviews, skip it. Look for apps with millions of downloads and ratings of four stars or higher.

Be careful with apps that ask for too much personal information. A legitimate weather app does not need your Social Security number. If something feels wrong, trust your instincts and delete the app.

Keep your apps and phone updated. Updates contain security fixes that protect you from new threats.

Do not tap on links inside apps from people you do not know. Just like with email scams, bad actors sometimes try to trick people through messages inside apps.

If you want to learn more about protecting yourself online, our guide on how to download apps safely goes into much more detail on what to watch out for.

You Are Doing Great

If you have read this far, you now understand more about apps than many people do. The world of technology can feel overwhelming sometimes, but remember: every expert was once a beginner. The fact that you are taking the time to learn is wonderful.

Start with just one or two apps that interest you. Get comfortable with those before adding more. There is no rush, and there is no wrong way to explore. If something goes wrong, you can always delete an app and start over. Your phone is tougher than you think, and so are you.

Frequently Asked Questions

Can an app break my phone?

No. A regular app from the App Store or Google Play Store cannot break your phone. If an app is not working properly, you can simply delete it. Your phone will be perfectly fine. The worst thing a bad app can do is slow your phone down a little, and deleting it fixes that right away.

Do apps use up my mobile data?

Yes, many apps use the internet to work. If you are connected to WiFi at home, this does not cost you anything extra. But if you are out and about using your mobile data (also called cellular data), some apps can use up your data allowance. Apps like YouTube and Netflix use the most data because they play videos. Simple apps like a calculator or clock use no data at all.

How many apps can I have on my phone?

Modern smartphones can hold hundreds of apps. You are very unlikely to run out of space from apps alone. However, if your phone starts telling you that storage is full, you can free up space by deleting apps you no longer use and removing old photos or videos. As a general rule, just keep the apps you actually use and delete the rest.