# Harmony guides
> Practical guides on studio scheduling for humans and language models.

- [Harmony vs spreadsheet scheduling](https://harmonyscheduling.com/guides/spreadsheet-scheduling.md): When a shared sheet is enough — and when recurring classes, self-serve moves, and calendar invites need Harmony.
- [How studio reschedule policy works](https://harmonyscheduling.com/guides/reschedule-policy.md): What studios can control (notice, limits, cancel rules) and how Harmony enforces it on every student change.
- [Per-teacher pricing explained](https://harmonyscheduling.com/guides/per-teacher-pricing.md): Why Harmony bills $10/teacher/month, who is free, and how the 30-day trial works.
- [DST-safe recurring classes](https://harmonyscheduling.com/guides/dst-recurring-classes.md): How Harmony keeps a “4:00 PM Monday” class at 4:00 PM through daylight-saving changes.

HTML: https://harmonyscheduling.com/guides