How do you choose a mental health app that actually helps?

The mental health app that helps is the one you'll actually open on a bad night, and that gives you something to do once it's open. Look for a conversation you can have, typed or spoken, plus quick tools for calming your body. Research points the same way: in a review of 176 trials, apps with a chatbot, mood check-ins or CBT tools showed bigger effects. Then check what it costs after any free period, and what happens to the things you tell it.

What a mental health app can do day to day

Think of it as a place to deal with things as they happen, not a week later. A good app for mental health earns its spot in moments like these:

• The 2 a.m. spiral. You type out the worry instead of replaying it, and get questions back that shrink it to its real size.
• Right after a hard moment. A tense meeting, a cold text from a friend. Two minutes of slow breathing on a timer, then one sentence about what happened.
• Before a conversation you're dreading. You rehearse what you want to say and try a few versions until one feels right.
• The flat Sunday. You pick one small thing to do in the next hour, instead of waiting to feel like it.
• Every morning. One tap to log your mood. A few weeks later, the chart shows patterns you'd never spot day to day.

Does it work? A 2024 review of 176 randomized trials found that mental health apps improved symptoms of depression and generalized anxiety compared with control groups. The effects were small, but they held up at later follow-ups and in the more careful trials. That's a fair return on a few minutes a day, and it's why the app you keep opening beats the one with the longest feature list.

Features that matter most

The same review looked at which features went with bigger effects. For depression, it was apps built on cognitive behavioral therapy (CBT) and apps with a chatbot. For anxiety, it was CBT apps and apps with mood monitoring.

The case for talking to an app keeps getting stronger. A 2023 review of AI chatbot studies, pooling 15 randomized trials, found that chatting with an AI significantly reduced symptoms of depression and distress. The effects were stronger when the chatbot used generative AI and lived inside a mobile or messaging app, the kind you text back and forth with. How people rated the experience came down to the quality of their relationship with the AI and how well it communicated.

So when you try a mental health mobile app, run through this in the first few days:

• Can you talk to it? An open chat that answers you at any hour, by typing or by voice. Scripted menus wear thin fast.
• Does it help you look at a thought? CBT-style help means catching the thought ("I'm going to get fired"), checking the evidence and landing on something more accurate ("my manager wants changes to one report").
• Is the mood check-in quick? One tap beats a form. If logging takes a minute, you'll stop by Thursday.
• Is there something for your body? Breathing exercises with an on-screen timer, so you don't have to count while you're wound up.
• Does it fit you? You should be able to set the tone, gentle or more direct, and it should remember what you came to it for.

The best kind of app for anxiety

The best app for anxiety does two jobs. In the moment, it calms your body down. The rest of the time, it helps you talk the worry down to size. Plenty of apps only do one of them.

During an anxiety attack, start with your breath. When your heart is pounding, a slow exhale works faster than arguing with your thoughts. In a month-long Stanford study, five minutes a day of cyclic sighing, a breathing pattern built around long exhales, lifted mood more than the same time spent on mindfulness meditation and slowed people's breathing more. The short version is often called the physiological sigh:

1. Breathe in through your nose.
2. Take a second, shorter sip of air on top of it.
3. Let it all out slowly through your mouth, longer than both inhales together.
4. Repeat for a minute or two.

A breathing timer helps because you don't have to remember the pattern while you're panicking. You just follow the screen. If you're not sure what's happening in your body, here's what a panic attack feels like and how to stop it.

Between the hard moments, talk it through. Mindfulness for anxiety is worth learning, and a mindfulness app for anxiety can help you notice a thought without getting swept along by it. When your mind is racing, though, sitting quietly with it can feel like being stuck in a small room with the worry. That's when it helps to say it to something that answers back: what you're afraid will happen, how likely it really is, and what you'd do if it did. An app that offers both lets you breathe first and talk second.

Apps for low mood and depression

Low mood makes everything feel like effort, so an app for depression has to ask very little of you to get started. Talking works well here. You don't have to pick the right exercise. You say "I feel flat today" and let it ask the next question.

Apps with CBT features or a chatbot did better on depression symptoms in the review above. On a low day, that looks like an app that helps you with two things:

• Question the harsh thought. "I ruin everything" becomes "I missed one deadline and I'm exhausted." You can do something about the second one.
• Pick one small action. Open the curtains, shower, reply to one message, walk to the corner. Low moods feed on doing less, and the way back is a step small enough that you'll take it. Here's more on getting started when you have no motivation.

Anxiety and low mood often turn up together, so one app for depression and anxiety tends to beat two separate ones. A worried morning and a flat evening should both have somewhere to go.

If the low mood has been there most days for two weeks or more, tell your doctor. It's common and very treatable.

Self-care apps: small habits that stick

A self-care app helps with the plain, everyday habits that keep you steady, the ones that slide first when life gets busy. The best self-care app makes those habits so small they're hard to skip.

Habits stick when they're tiny and tied to something you already do. A few that work:

• Log your mood while the kettle boils.
• Do one minute of slow breathing before you open email.
• Before you plug your phone in at night, write down one thing that went okay.
• Take a 10-minute walk after lunch and notice how you feel afterward.
• On Sunday evening, name the one thing that's weighing on next week, and the first step on it.

Some people want more than a checklist. A self-care companion app, or a self care coaching app, talks with you about how it's going, remembers what you said you're working on and helps you adjust when a habit isn't sticking. If you've tried habit trackers and dropped them after a week, that back-and-forth is often what was missing.

Free vs paid mental health apps

A free app for mental health is easy to find. The real question is what "free" covers. Usually it's one of these:

• Free with ads. The app makes money from your attention, and sometimes from data about you. Read the privacy page before you share anything personal.
• Free basics, paid extras. A few exercises are open, and the parts you'd use most sit behind a paywall.
• A free trial. Everything is open for a few days, then it's paid. This is the most honest way to find out whether an app fits.

To get the most from a trial, use it in the exact moments you need help. If nights are hard, open it at night. If Monday mornings are, open it then. By the end you'll know whether you reached for it or forgot it was there. Before you start, check the price after the trial, whether you can pay weekly or yearly, and how to cancel.

The best free mental health app might be all you need for one habit, like a breathing timer. For a conversation you'll lean on when things are hard, an ad-free paid app is usually worth it, because your words aren't what's paying the bills.

What happens to what you tell the app

You'll tell a mental health app things you haven't said to anyone, so give its privacy page five minutes. Look for plain answers to these:

1. Are my chats sold or used for ads? You want a flat no.
2. Are they encrypted where they're stored? The padlock in your browser covers data on its way to the app. What matters more is whether your conversations are encrypted where they're saved.
3. Can I delete everything myself? From inside the app, without emailing anyone and waiting.
4. What does it need to know about me? An email to sign in is normal. Your contacts and location usually aren't needed for a chat.
5. If I talk instead of type, is the audio kept? The best answer is that your speech becomes text and the recording isn't stored.

Most apps that save your history are private rather than anonymous. Your chats are tied to your account so you can come back to them, and they're protected from everyone else. There's more on this in five things to check before you tell an AI your problems.

Quick answers

What's a good app for anxiety that isn't just meditation, something I can actually talk to?

Look for an AI chat app with an open conversation you can type or speak into, plus breathing exercises for when your body is racing. Talking lets you say what the worry actually is, and a good app answers with questions that bring it down to size. Moodu has a guided conversation for anxiety, an open chat at any hour and breathing exercises on an on-screen timer.

I'm tired but wired every night. What app actually helps?

One that helps you get the thoughts out of your head before bed, then slows your breathing down. In a sleep-lab study of 57 young adults, people who spent 5 minutes writing a specific to-do list at bedtime fell asleep faster than people who wrote about what they'd already done. Type tomorrow's list into a chat, then do a few rounds of 4-7-8 breathing. Moodu's Sleep Serenity conversation and its quick Sleep check are built for nights like this.

Try Moodu free for 3 days

If you'd like the conversation and the tools in one place, Moodu puts them together: an open chat at any hour, breathing timers and one-tap mood check-ins. For anxiety, start with Anxiety Alleviation. It opens with: "Anxiety can be loud. On a scale of 1 to 10, where is it right now, and what's it saying?" From there it helps you name the worry and see how big it really is. You can type, or tap the mic and talk. Your speech becomes text and the audio isn't kept.

When your body is ahead of your thoughts, the Physiological sigh runs on an on-screen timer, so you just follow along. The mood check-in takes one tap (Blah, Meh, Good or Best) and builds a chart over the weeks, so you can see how your days are trending. You choose its tone, from gentle to direct to a little playful, and there are guided conversations for low days, sleep, stress, grief and more. Here's more on how Moodu works as an AI emotional support app.

Chats are encrypted before they're saved and never used for ads. Moodu is $39.99 a year after a 3-day free trial, or $4.99 a week.