Comparison

Marbles CBT vs Diary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Marbles CBT

This app helps users learn and practice Cognitive Behavioral Therapy techniques to manage habits, thinking patterns, and emotions. It offers tools for thought challenging, fear exposure, and various diaries for tracking mood, gratitude, and self-monitoring. Additional features include relaxation exercises and educational lessons on CBT.

Highlights
  • Thought challenging exercises
  • Fear exposure practice
  • Self-monitoring diary
  • Slow breathing relaxation
  • Muscle relaxation techniques
  • Mood and gratitude diaries
  • CBT learning lessons
Features
Read full description

Marbles CBT is an easy-to-use app for learning and practicing tools from CBT therapy. Whether you have tried it or not, you can use it to change your habits and thinking patterns and feel better. Marbles features several tools, including: Thought challenging - negative feelings often arise from our thoughts about situations and events in life. Cognitive behavioural therapy teaches us to identify such thought patterns that are not logical, called "cognitive distortions." In Marbles, the process of challenging thoughts is structured: recording the thought, identifying distortions, challenging the thought, and creating an alternative thought. The tool and various distortions are also covered in short lessons. Overcoming fears (using exposures) - CBT is highly effective for dealing with specific fears such as: fear of heights, claustrophobia, fear of animals, social anxiety, etc. As part of the treatment, exposure exercises are used to gradually deal with the scary subject. The Marbles app enables you to create a central practice table and to keep track of every practice you do. Self-monitoring diary - one of the main CBT tools, it is a diary that allows you to examine the relationship between your thoughts, feelings, and behaviors in different situations. Through it, you learn how your thoughts and behaviors affect your emotions. Slow breathing - The practice of slow breathing is an easy and highly effective method for relaxing the body. For beginners and experienced practitioners alike. Muscle relaxation - a simple relaxation technique that relieves physical and mental stress, anxiety, and even pain. Marbles contains illustrated instructions for practicing relaxation at all levels. Mood diary - for recording changes in mood over time. In addition, you can choose accompanying emotions and add comments. In the insights screen, you can see the changes in mood over time. Gratitude diary - allows you to record things you're thankful for. Regularly noting your blessings, big and small, can improve your outlook, reduce stress, and help you appreciate life more fully. Additional features include: • Insights screen with mood graph, your most common emotions, and activity data. • Follow up on thoughts relating to future events (did what you expect really happen?). • A learning section with short lessons on CBT, app features, and usage tips. • Share all your content easily - you can attach your diaries and exercises in an email (convenient for therapists). Subscription All the main features of the app are completely free to use. We offer a premium subscription to keep the core tools of the app free. These include: additional diaries, insights, and relaxations. The premium subscription also allows us to spend more time and budget upgrading Marbles and adding new features. A subscription may differ in price by country. Payment will be deducted from a user's Apple App Store account at the time of purchase. Subscriptions will automatically renew 24 hours before they expire unless cancelled in advance. Disclaimer It is important to remember that Marbles CBT is not meant to replace professional mental health help, therapy, or counselling. If you have concerns about any aspect of your mental health, or someone else's mental health, it is always advisable to seek professional help.

About

Diary

This app helps you track your thoughts, emotions, and behaviors to understand and change unhelpful patterns. It's a tool for developing coping strategies and improving overall well-being through cognitive behavioral therapy techniques.

Highlights
  • Record events, thoughts, and emotions
  • Identify cognitive distortions
  • Track behaviors and body reactions
  • Develop rational responses
  • Monitor progress over time
  • Set mental health goals
Read full description

Cognitive behavioural therapy (CBT) is a type of psychotherapy that helps individuals identify and change unhelpful or unhealthy thought patterns and behaviours. The goal of CBT is to positively influence a person’s emotions, behaviour and overall wellbeing. CBT can be used to treat a variety of issues, such as depression, anxiety, phobias and post-traumatic stress disorder. It helps people develop beneficial coping strategies and improve their problem-solving skills. A CBT diary is a tool that is used to record events, thoughts, emotions, body reactions, behaviours, rational responses and cognitive distortions. It is used to track progress over time and help individuals learn more about their thought and behaviour patterns. The diary can also be used to set goals and develop strategies for improving mental health. By writing down their thoughts, emotions, and behaviours, individuals can gain greater insight into their own behaviour and gain new perspectives on the challenges they are facing. By downloading the app, you agree to our Terms of Use and Privacy Policy. http://diary.ios.app.tilda.ws/en/terms-and-conditions

Screenshots

Marbles CBT4 screens
Diary4 screens

Verdict

The call

The clearest difference is update cadence: Marbles CBT at every 2 months against Diary's every 7 months. On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Marbles CBT sells 2 in-app purchases, starting at $7.99 per month and Diary sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Marbles CBT against 5.0 for Diary. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

Marbles CBT ships an update every 2 months, Diary every 7 months. The most recent releases landed on June 4, 2026 and August 30, 2026 respectively.

Scorecard1 real difference · 9 level
Marbles CBT versus Diary: the parameters behind the verdict, then further details
ParameterMarbles CBTDiary
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews—66.7% of reviews
Number of ratings22
Update frequencyEvery 2 months — betterEvery 7 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size35 MB20 MB
Age rating12+4+
DeveloperOmri SadehIvan Medvedev

Customer experience

Marbles CBT

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Diary

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

2 purchases

Marbles CBT

Subscriptions2
  • English14 Days trial$7.991 Month
  • English$79.991 Year
1 purchases

Diary

Subscriptions1
  • Premium$0.991 Month

Questions

Is Marbles CBT free?
Marbles CBT is free to download, with in-app purchases available.
Is Diary free?
Diary is free to download, with in-app purchases available.
Which has better reviews, Marbles CBT or Diary?
Marbles CBT and Diary are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do Marbles CBT or Diary have ads?
Neither Marbles CBT nor Diary shows ads.
Which is updated more often, Marbles CBT or Diary?
Marbles CBT ships an update every 2 months, and Diary every 7 months. Most recently, Marbles CBT was updated on June 4, 2026 and Diary on August 30, 2026.

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