Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
The urge to self-harm is like a wave
$1.99 · In-app purchases
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Calm Harm – manage self-harm: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Limited variety of coping tools and strategies
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of personalization in emotional responses
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Not enough engaging features to keep users active
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchase structure may confuse users
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
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.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.