Private mood & anxiety tracker

One check-in.
Clearer days.

Mudo is a private anxiety tracker app for iPhone that works fully offline. Any AI runs on-device — your entries never leave your phone. No account required. Fast 10-second check-ins, clearer recall over time, and real data to bring into therapy.

Download free Why Mudo works

4.9 on the App Store

Speed

10-sec logs

Check in before the feeling passes.

Privacy

100% private

Your data stays on your device.

Mudo app home screen: a calm, warm check-in interface with six mood levels

Choose from 15+ moods to check-in exactly how you feel. Customize the Mood Grid whenever you like.

How it works

Ten seconds today. Real answers a month from now.

Mudo is intentionally short on the front end so it can be useful on the back end. Tap in the moment. Make sense of it later.

Ten seconds now

Log it.

Six mood levels, one tap. No prompts to fill in, no streaks to protect. Mudo catches the feeling before it slips into 'just another vague day.'

≤10s avg. log time

Patterns later

Read it back.

Sunday nights. Monday mornings. After certain conversations. The taps add up into a weekly view that names the patterns you couldn't quite see in the moment.

Automatic insights

From real users

People keep coming back to the same words: calm, clear, easy.

Rating

4.9

Loved by people globally on the App Store

Privacy

On-device

Any AI runs locally — entries never leave your phone

“This app has helped me have a better track and thus control of my mood. Mood Insight feature is a game changer. It helped me dive deeper and understand myself better. A must have.”
@theuserofthisphone

“I struggle with anxiety and adhd and this app truly helps me regulate my emotions. Super easy and simple. Love it”
@Melmandarabuilds

“I like the design of this app. It is very easy to navigate and I like the accent color throughout the app. The emojis to represent moods is a cool idea and I like how easy it is to choose one as soon as you launch the app. I have enjoyed testing the app and directly connecting with the developer and helping him make it accessible as well. As a visually impaired person, that is very important to me.”
@leahdykema

“I have recently started using this and I am already learning so much about my moods and emotions.”
@rathianku

“I didn't know I needed this! I really like the simplicity and sleek UI. Highly recommend!”
@thomas_sm

“I was not sure why this app shows 6 moods at once but boy do I UNDERSTAND that now. I like how little friction this app has. The widget genuinely helps me log quickly.”
@adictonat0r

“This app helps me to pause n take note of my current mood. This is helpful to identify various moods so I can either take necessary actions or simply accept. At the end of the day, the insights tell how I have been throughout the day and also highlight the most common mood. This has definitely helped me in becoming more self aware. Also, small quotes everyday is like a cherry on the top. A must have !”
@ayublogger

“I struggle with anxiety and adhd and this app truly helps me regulate my emotions. Super easy and simple. Love it”
@Melmandarabuilds

“I like the design of this app. It is very easy to navigate and I like the accent color throughout the app. The emojis to represent moods is a cool idea and I like how easy it is to choose one as soon as you launch the app. I have enjoyed testing the app and directly connecting with the developer and helping him make it accessible as well. As a visually impaired person, that is very important to me.”
@leahdykema

“I have recently started using this and I am already learning so much about my moods and emotions.”
@rathianku

“I didn't know I needed this! I really like the simplicity and sleek UI. Highly recommend!”
@thomas_sm

Private by default

An offline anxiety tracker with no account and no cloud AI.

Most mood tracking apps quietly collect everything you log because the data is the product. Mudo is built the opposite way. Your anxiety entries belong on your phone — and they stay there. End-to-end encryption when you sync, no server storage, no advertising profile, and any AI runs on-device with Apple Intelligence so your notes never leave your iPhone. The kind of privacy that just works without you having to read a policy to trust it.

Fully offline by default

Every mood log, note, and pattern stays on your iPhone. There is no Mudo server reading your entries — because there is no Mudo server holding them in the first place.

iCloud sync uses your account, not ours

When you turn on sync with mudo+, the data moves through your own iCloud, end-to-end encrypted by Apple. We never see it. There is nothing for us to hand over because nothing reaches us.

No account, ever

You do not sign up. You do not give us an email. The app opens and works. The only personal information Mudo asks for is the mood you tap on the home screen.

On-device AI, nothing leaves your phone

Insights use Apple Intelligence running locally on iPhone 15 Pro and newer with iOS 26. Your notes are never sent to OpenAI, Anthropic, Google, or any cloud model — including ours. If your device cannot run on-device AI, Mudo falls back to plain template prose.

Why it works

Built different. On purpose.

Most mood apps fail for the same reasons. Mudo fixes them.Most mood apps fail for the same three reasons. Mudo was designed around each one — not as an afterthought, but as the entire point.

Mudo mood check-in screen with six-mood grid

Mudo insights screen showing an AI-written pattern finding

Mudo Lock Screen widget — log a mood without opening the app

The 10-second rule

Done before the feeling passes.

When anxiety peaks, typing feels impossible. Mudo gives you six moods and one tap — the entry is in before the moment slips. No prompts, no blank field, no decisions.

≤10s avg. log time

Patterns, in plain English

Sunday nights have a shape.

Mudo reads your logs on-device and writes back what it sees — Sunday-night dread, post-meeting crashes, the words in your notes that keep showing up on harder days. Named, not buried in a chart.

Insights in plain language

Designed for low-effort days

Built for the days you don't want to.

Most trackers were built for motivated-you. Mudo was built for the version that's tired, late, or already anxious. Reminders shift when you ignore them. A missed day doesn't break anything. Logging is one tap because that's all you have.

Adaptive reminders, gentle motivation

FAQ

Common questions, answered plainly.

You should not have to guess how privacy, syncing, exports, or therapist use work before downloading a mental wellness app.

Quick take

Mudo is private by default, fast enough to use in the moment, and designed to help you notice patterns without turning reflection into work.

Is Mudo an anxiety tracker or a mood tracker?

Mudo is specifically designed as an anxiety and stress tracker. While it can track general moods, its features are optimized for identifying anxiety triggers, spotting panic patterns, and understanding when your stress levels peak — perfect for people who want to track anxiety without overwhelming journaling.

Why does Mudo use a small set of anxiety levels?

A small, curated set of anxiety levels keeps logging fast and low-friction when you're actually feeling anxious. Too many options create decision paralysis. You can always customize which levels you track to match how you experience anxiety.

Can I track panic attacks with Mudo?

Yes. Quick 10-second logging lets you capture panic episodes in the moment. Use the calendar view to spot panic attack patterns over time, and share this data with your therapist to identify triggers.

How private is my anxiety data?

By default, your anxiety tracking data stays entirely on your device. If you enable backup or sync (mudo+), data is stored via iCloud and encrypted. We don't use AI to analyze your entries, show ads, or sell your data — check the Privacy Policy page for full details.

Give yourself a
softer way
to keep track.

When a day feels blurry, Mudo gives you one private place to catch the moment, notice what keeps repeating, and feel a little more oriented next time.

Download Mudo free

Fully offline — no internet needed to log or review

No account required to get started

Any AI runs on-device — your entries never leave your phone

One check-in. Clearer days.