Skip to content

Calm Harm – manage self-harm

by Stem4

  • Health & Fitness
  • Paid
  • Small & simple · 89
View on the App Store
Rating
4.4
682 ratings
Top 72%among 228 Health & Fitness apps
Last update
Dec 3, 2025
Version 6.2.1
Size
40 MB
Category
Health & Fitness
Tracked since
Oct 10, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

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.

What’s new

Release notes for the latest version, as written by the developer.

v6.2.1
Original · root

Enhanced analytics consent options
Bug fixes

Rank history

Daily position in the US charts. #1 is at the top.

Best rank
#11
Current rank
#14
Days charting
7 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

89/100

Small & simple

  • Developer size70% · 25

    Developer: 2 apps on the charts

  • Audience size80% · 20

    Ratings: 682

  • App size100% · 10

    Size: 40 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof100% · 30

    Best rank #1, 43 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Gap check · UK

Is this US chart app missing in UK?

In the UK store, not on any chartCandidate

Median rank and days in the top are part of Pro.See Pro

Store check Oct 22, 2026

This is a candidate, not a verdict. Charts show at most 100 apps, so not charting does not mean no demand. Check the UK store before you decide.

See all gaps

Version history

  • 6.2.1LatestReleased Dec 3, 2025