Privacy Policy

Last updated July 2026

This policy explains what achkit collects and why. We keep it short because we collect little.

What we collect

Account data - your email address and a hashed password (or Google account identifier if you sign in with Google).
Usage data - counts and metadata of your API calls (endpoint, timestamp, tier) for billing, limits and analytics. We do not retain the ACH file contents you send to the validation API - they are processed in memory and discarded.
Billing data - handled by Stripe. We store a Stripe customer identifier; we never see or store your card details.

To provide the service, enforce plan limits, verify routing numbers, prevent abuse, and communicate about your account. We do not sell your data.

Stripe (payments) and our own hosting infrastructure. The free library runs entirely on your machine and sends us nothing.

We keep account and usage data while your account is active. Email [email protected] to access, export or delete your data.