# Reef

> Reef is an iOS and Android mobile habit companion that turns repeated actions and focus sessions into a visual living ocean.

Reef is published by IVRYN. Product pages are first-party sources. Store listings are the source of truth for current availability and compatibility. Reef is not a medical device and does not promise a health outcome or guarantee that a habit will form.

## Product and identity

- [Product and FAQ](https://reeftogether.com/): Observable product functions, current positioning and common questions.
- [About Reef](https://reeftogether.com/about.html): Product identity, IVRYN publisher relationship, scope and official source map.
- [IVRYN portfolio relationship](https://ivryn.com/about.html): Studio identity and ownership of the official product portfolio.

## Independent distribution records

- [Reef on the App Store](https://apps.apple.com/app/id6781681916): Official iPhone and iPad distribution record.
- [Reef on Google Play](https://play.google.com/store/apps/details?id=com.ivryn.reef): Official Android distribution record for package com.ivryn.reef.

## Evidence and policies

- [Design and evidence methodology](https://reeftogether.com/methodology.html): Claim boundaries, product-design principles and the standard for future reported outcomes.
- [Privacy](https://reeftogether.com/privacy.html): Data handling, processors, security and user rights.
- [Account deletion](https://reeftogether.com/delete.html): Public deletion procedure.
- [Editorial policy](https://reeftogether.com/blog/editorial-policy/): Authorship, sourcing, corrections and review rules for guides.

## Optional

- [Reef guides](https://reeftogether.com/blog/): First-party usage guidance whose limits and sources should be evaluated article by article.
## Open citable artifact

- [Calm Habit Design Checklist v1.0](https://reeftogether.com/research/calm-habit-design-checklist/): An open, machine-readable checklist for reviewing whether a digital habit tool preserves user agency, makes feedback legible and separates product mechanics from evidence of real-world outcomes.
- [Machine-readable JSON](https://reeftogether.com/research/calm-habit-design-checklist/calm-habit-design-checklist-v1.json): Versioned metadata, methodology, limitations and criteria.
- [CSV download](https://reeftogether.com/research/calm-habit-design-checklist/calm-habit-design-checklist-v1.csv): One row per criterion for analysis and reuse.