Comparison

Calm Harm vs Molehill Mountain

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

Head to head
About

Calm Harm

This app offers immediate techniques to help manage urges to self-harm. It provides activities to distract, comfort, and express oneself, along with breathing exercises and journaling tools. It aims to help users ride the wave of urges until they fade.

Highlights
  • Manage self-harm urges
  • Distraction activities
  • Comforting techniques
  • Express yourself tools
  • Breathing exercises
  • Journaling and self-reflection
Features
Read full description

The urge to self-harm is like a wave. It feels the most powerful when you start wanting to do it. Join over 2 million users and learn to ride the wave with the free Calm Harm app by choosing activities from these categories: Comfort, Distract, Express Yourself, Release, and Random. There is also a breathing technique to help be mindful and stay in the moment, regulate difficult emotions and reduce tension. When you ride the wave, the urge to self-harm will fade. Calm Harm is an award-winning app developed for teenage mental health charity stem4 by Clinical Psychologist Dr. Nihara Krause, in collaboration with young people, using principles from the evidence-based Dialectical Behaviour Therapy (DBT). It is built to NHS standards and approved by ORCHA. Calm Harm provides some immediate techniques to help break the cycle of self-harm behaviours and explore underlying trigger factors; build a ‘safety net’ of helpful thoughts, behaviours and access to supportive people; and provides the opportunity to journal and self-reflect. It also provides signposts to help. The Calm Harm app is private, anonymous and safe. Reviews from Calm Harm app users: • ‘This app helps me so much. I can't thank you enough for improving my life.’ • ‘I was told by my support worker to download this, best thing I ever did!! It’s helped me a lot through the tough times and I would definitely recommend this!!!’ • ‘This app saves lives. It is a beautiful, beautiful tool. Thank you endlessly.’ Awards for Calm Harm include: • Health Tech Awards Winner ‘Best Healthcare App of the Year’ 2021 • Digital Leaders 100 Awards Winner ‘Tech for Good Initiative of the Year’ 2020 (for stem4’s app portfolio, including Calm Harm) • Third Sector Awards Winner ‘Digital Innovation of the Year’ 2019 Please note that the Calm Harm app is not a substitute for the assessment and individualised treatment by a health/mental health professional. Please also note that if you forget both your passcode and security answer, these cannot be reset as we do not create user accounts. You will need to reinstall the app, losing any previous data.

About

Molehill Mountain

This app helps autistic individuals understand and manage anxiety using Cognitive Behavioural Therapy (CBT). It allows users to track worries, identify triggers, and access daily tips and interactive activities designed to address common anxieties.

Highlights
  • Anxiety tracking and trigger identification
  • Daily tips for understanding anxiety
  • Mini-tips for common autistic anxieties
  • Interactive CBT activities
  • Pattern and trend identification
  • Personalized check-ins
Features
Read full description

Molehill Mountain has been developed by Autistica and King’s College London to help autistic people understand and self-manage their anxiety. We have worked with closely autistic people at every stage in developing Molehill Mountain to ensure that it is easy for autistic people to use and is relevant to their needs. Molehill Mountain is based on Cognitive Behaviour Therapy (CBT), a well-established and clinically proven technique for managing the symptoms of anxiety. The app has been developed with the full involvement of Professor Emily Simonoff, Dr Ann Ozsivadjian and Dr Rachel Kent from the Institute of Psychiatry, Psychology & Neuroscience (IoPPN) at King’s College London. Most autistic people experience anxiety on a regular basis. Around eight out of ten will have symptoms of anxiety – and of these, three or four will have enough symptoms to be given a diagnosis of anxiety disorder. Molehill Mountain allows you to track your worries and identify the situations that trigger your anxiety. Your daily check-ins are plotted on a chart which allows you to identify pattern and trends – and you can also display a previous check-in to help you identify recurring triggers for your anxiety. Over time, you unlock tips that will help you to understand your anxiety and learn ways to manage it. The daily tips have been completely rewritten for this new version of Molehill Mountain. In addition, we have added dozens of extra mini-tips to cover many of the common causes of anxiety and stress in autistic people, such as hypersensitivity to noise, light and touch or difficulties with social situations and communication. The app also has interactive CBT activities which you can use at any time. These draw upon well-established and clinically proven techniques and are designed to help you to recognise and overcome unhelpful patterns of thinking. The development of Molehill Mountain has been supported by: • The Maudsley Charity • The Worshipful Company of Information Technologists’ Charity • The Pixel Fund Autistica Autistica is the UK’s national autism research charity. They exist to create breakthroughs that enable every autistic person to live a happy, healthy and long life. They do so by: • Shaping and growing research across the UK • Funding new and innovative research solutions • Campaigning for better services and shaping national policy • Sharing evidence-based tools, resources, and information https://www.autistica.org.uk/ @Autistica The Institute of Psychiatry, Psychology & Neuroscience (IoPPN) at King’s College London King’s College London is one of the top 10 UK universities in the world (QS World University Rankings, 2018/19) and among the oldest in England. King’s has more than 31,000 students (including more than 12,800 postgraduates) from some 150 countries worldwide, and some 8,500 staff. The Institute of Psychiatry, Psychology & Neuroscience (IoPPN) at King’s College London is the premier centre for mental health and related neurosciences research in Europe. It produces more highly cited outputs (top 1% citations) on mental health than any other centre (SciVal 2019) and on this metric we have risen from 16th (2014) to 4th (2019) in the world for highly cited neuroscience outputs. World-leading research from the IoPPN has made, and continues to make, an impact on how we understand, prevent and treat mental illness and other conditions that affect the brain. https://www.kcl.ac.uk/ioppn @KingsIoPPN

Screenshots

Calm Harm4 screens
Molehill Mountain4 screens

Verdict

The call

The clearest difference is price: Molehill Mountain at Free against Calm Harm's $1.99. Molehill Mountain also leads on rating (4.7 vs 4.4) and update cadence (monthly vs every 4 months). Calm Harm's advantage is review sentiment (80% vs 56%) and chart position (#13 vs unranked). On ads, in-app purchases, monetization model and device support 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

Molehill Mountain is free to download; Calm Harm costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Molehill Mountain holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Calm Harm has 682 ratings behind it against 106, so its average is the more settled of the two. Written reviews complicate that: 80% of Calm Harm's written reviews are positive against 56% of Molehill Mountain's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Calm Harm ships an update every 4 months, Molehill Mountain monthly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard7 real differences · 4 level
Calm Harm versus Molehill Mountain: the parameters behind the verdict, then further details
ParameterCalm HarmMolehill Mountain
Price$1.99Free — better
Rating4.4 (682 ratings)4.7 (106 ratings) — better
Positive reviews80.3% of reviews — better56.3% of reviews
Number of ratings682 — better106
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#13 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.4 — better15.6
Further details — not scored
Size38 MB25 MB
Age rating12+17+
DeveloperStem4Autistica apps

Customer experience

Calm Harm

All ratings681 ratings
Positive86.6%
Neutral3.4%
Negative10.0%
Written reviews244 reviews
Positive80.3%
Neutral5.3%
Negative14.3%

Molehill Mountain

All ratings105 ratings
Positive93.3%
Neutral5.7%
Negative1.0%
Written reviews32 reviews
Positive56.3%
Neutral18.8%
Negative25.0%

Bugs and requests

Calm Harm

Reported bugs

4 issues
  • App freezing or crashing on certain devices
  • Inconsistent or buggy behavior of certain features
  • Layout and UI issues on newer smartphone models
  • Syncing or data loss problems when switching devices

Requested features

6 requests
  • Add more in-app activities and distractions
  • Implement dark mode or customizable themes
  • Allow users to edit or delete journal entries
  • Add support for Apple Watch or other wearables
  • Provide more language options and localization
Show 1 more
  • Integrate with other mental health apps or services

Molehill Mountain

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Calm Harm

No in-app purchases

None

Molehill Mountain

No in-app purchases

Questions

Is Calm Harm free?
Calm Harm costs $1.99, with no in-app purchases.
Is Molehill Mountain free?
Molehill Mountain is free to download, with no in-app purchases.
Which has better reviews, Calm Harm or Molehill Mountain?
Molehill Mountain is rated higher. Calm Harm averages 4.4 out of 5 from 682 ratings, while Molehill Mountain averages 4.7 from 106 ratings.
Do Calm Harm or Molehill Mountain have ads?
Neither Calm Harm nor Molehill Mountain shows ads.
Which is updated more often, Calm Harm or Molehill Mountain?
Calm Harm ships an update every 4 months, and Molehill Mountain monthly. Most recently, Calm Harm was updated on October 24, 2026 and Molehill Mountain on October 21, 2026.

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