Mentalium: Voice CBT Diary
Talk out anxiety in the moment
Only for iPhone
Free · In‑App Purchases
iPhone
Speak your thought record, the AI writes it down. A CBT thought diary and thought journal, offline, nothing leaves your phone. Watch your anxiety drop week by week.
Start with a 3-day free trial on the weekly plan, or choose the yearly plan, no trial. One Premium subscription unlocks every feature below. Prices depend on your country and are shown in the app before you buy. Manage or cancel anytime in App Store.
Mentalium is a voice-powered CBT diary with built-in AI transcription. Developed together with Alexander Erichev, MD, PhD, psychiatrist and psychotherapist, Professor at the Department of Psychotherapy, Medical Psychology and Sexology, Mechnikov North-Western State Medical University. It is built to make your cognitive behavioral therapy genuinely more effective.
The real progress in CBT happens between sessions — when you keep your thought diary regularly. That is the key "homework" of therapy: the more often you work through your automatic thoughts, the faster your thinking shifts and your anxiety eases. The problem is that almost no one keeps the diary by hand — typing on a phone is slow, and a notebook is never around. So people fill it in from memory a couple of hours before their session. That works about as well as going to the gym once a month.
Mentalium removes the main obstacle. Anxiety does not arrive on schedule, and you need to capture the thought in the moment — while it is still fresh. Just tap record and say it out loud: the AI instantly turns your speech into a structured CBT entry. The act of speaking and reframing the thought already helps you get through a wave of anxiety more calmly.
HOW IT WORKS
The app guides you through every step of the CBT thought diary:
— Rate your anxiety level before the entry
— Describe the situation that triggered anxiety
— Identify the automatic thought
— Name the emotion and physical reaction
— Formulate a more realistic, calmer thought
— Rate your anxiety level after the entry
No typing — just talk. In the car, at home, on a walk.
WATCH YOUR ANXIETY GO DOWN
Mentalium records your anxiety level before and after each entry and shows the dynamics: how many entries you have made, how your anxiety changes over time, and which cognitive distortions come up most often. Progress is visible — and that keeps you from quitting.
WHY CBT
Cognitive behavioral therapy is one of the most researched, evidence-based approaches to anxiety. Its core tool is the thought record: catch the automatic thought that set off the anxiety and replace it with a more realistic one. Mentalium makes that tool convenient enough to actually use every day.
SHARE WITH YOUR PSYCHOTHERAPIST
Send your CBT diary entries to your psychotherapist straight from the app in one tap. The app builds an Excel report for the selected period and emails it. No time wasted retelling everything in session — go straight to the analysis.
COMPLETE PRIVACY
Notes about your inner state are personal. That is why your entire CBT diary is stored only on your device and never sent anywhere. Speech recognition runs right on your phone: on first launch the app downloads an offline model once (~252 MB), and everything is processed locally after that. Your voice recordings never go to third-party servers.
WHO MENTALIUM IS FOR
• You are doing CBT with a psychotherapist and want to get the most out of therapy
• You practice cognitive behavioral therapy on your own
• You are looking for a convenient way to handle anxiety and panic attacks in the moment
• Keeping a thought diary by hand is hard for you — voice removes that barrier
Install Mentalium and keep your CBT diary when it works best — in the moment, not a couple of hours before your session.
DISCLAIMER
Mentalium is not a medical device, is not intended to diagnose, treat, cure, or prevent any medical condition, and does not provide medical or psychological advice. If you have any health concerns, please consult a qualified healthcare professional.
Privacy Policy: https://mentalium.me/legal/privacy-policy.html
Terms of Use (EULA): https://mentalium.me/legal/terms-of-use.html
Ratings & Reviews
• Transcription is noticeably faster, a recording now takes about as long to process as it took to record.
• If you stay silent or answer very briefly, the app no longer invents text, the field stays empty.
• On first launch the app downloads a new speech recognition model, about 252 MB, so Wi-Fi is recommended.
• The old model is removed automatically and no longer takes up space on your device.
The developer, Pavel Trubetskov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Pavel Trubetskov
- Size
- 49 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Mentalium Annual $59.99
- Mentalium Weekly $9.99
- Copyright
- © 2026 Mentalium