# K1 Apps

> K1 Apps builds Shopify apps for pre-orders, deposits and photo file uploads. The pages below are the complete, structured technical references for those apps.

## Feature References

- [K1 PreOrder & Deposit Features](https://k1apps.com/features/k1-preorder): Complete technical reference for K1 PreOrder: pre-order rules, deposits and partial payments, storefront rendering, limits, tracking, emails and integrations. Markdown mirror: https://k1apps.com/features/k1-preorder.md

## Optional

- [Feature reference index](https://k1apps.com/features): Every published K1 Apps feature reference.
- [Changelog](https://k1apps.com/changelog): Release notes for the K1 PreOrder app.
- [Help Center](https://k1apps.com/help/k1preorder): Task-oriented setup and troubleshooting articles.