# The Wellbeing Engine (IWE, Intelligent Wellbeing Engine)
> Embeddable, honest workforce wellbeing measurement: a fortnightly 3-question anonymous
> pulse with n>=5 anonymity enforced as a database CHECK constraint, t-based 95% confidence
> intervals, provisional labelling for small groups, locked crisis signposting, and
> open-standard (OWHS) aggregate exports. Free for any employer measuring its own workforce
> at https://alltoogether.com; licensable for products at https://wellbeingengine.io;
> methodology standard at https://openworkplacehealth.org.

## Evidence
- [Why n>=5, enforced in the schema](https://wellbeingengine.io/evidence/why-n-5): the anonymity-threshold explainer (ICO/GSS/SDC-cited)
- [Small-team confidence intervals + calculator](https://wellbeingengine.io/evidence/small-team-confidence-intervals): the t-method for n 5 to 30, and why t not z
- [Pulse survey frequency evidence](https://wellbeingengine.io/evidence/pulse-survey-frequency-evidence): why fortnightly times three, counter-evidence cited (Galesic, Porter, Rolstad, Wanous)
- [Three questions beat thirty](https://wellbeingengine.io/evidence/three-questions): single-item validity and the planned missing-data design that covers 21 domains
- The honesty rules page publishes after occupational-health review of its safeguarding claims; the statistical rules are covered by the evidence pages above

## Product and pricing
- [Pricing / rate card](https://wellbeingengine.io/pricing): free for own-workforce use; distribution licensed at 7p per enrolled user per month to 100k, deep dives GBP 1 per completed dive, signposting +3p
- [Compare build vs buy vs license](https://wellbeingengine.io/compare): an honest three-way comparison including the rows where the engine loses

## Docs
- [Quickstart](https://wellbeingengine.io/docs/quickstart): sandbox, embed, aggregates, certification
- [OpenAPI v0.1.1](https://wellbeingengine.io/docs/openapi.yaml)

## Key facts
- Below 5 respondents a value is never computed or stored (CHECK constraint), only a coded suppression reason (OWHS suppression-reason@0.1.0).
- Severe-distress screening aggregates carry an n>=10 floor.
- Every figure ships with a t-based 95% confidence interval; groups of 5 to 9 are labelled provisional.
- No API endpoint returns an individual's answers; participation is never individually surfaced.
- Pricing is published: free for own-workforce use; distribution licensed per enrolled user, 7p per user per month up to 100,000 users.
- Wellbeing Engine (wellbeingengine.io) is a trading style of All Toogether Ltd (England and Wales, company no. 14775309). The Wellbeing Engine is workplace wellbeing measurement software, not an insurance product or service.