Upgrading From Pebble to Boulder
PetRock.cloud offers four tiers: Pebble, Cobble, Boulder, and Monolith. This article covers the most common upgrade path, Pebble to Boulder, but the process is identical for any tier change.
Tier comparison
| Feature | Pebble | Cobble | Boulder | Monolith |
|---|---|---|---|---|
| Rocks included | 1 | 5 | 25 | Unlimited |
| Regions | 1 | 2 | All | All |
| Audit log retention | 7 days | 30 days | 90 days | 1 year |
| Webhook destinations | 1 | 5 | 25 | Unlimited |
| Custom domains | No | No | Yes | Yes |
| SLA | None | 99.0% | 99.9% | 99.99% |
| Support | Community | Priority email | Dedicated |
Note: SLA percentages refer to dashboard and API availability, not rock activity. Rocks remain inert at all tiers.
How to upgrade
- Navigate to Settings → Billing → Plan.
- Locate the tier you want and click Select Plan.
- Review the change summary, including the prorated charge.
- Confirm by clicking Upgrade Now.
The upgrade takes effect immediately. Your dashboard will refresh to reflect new tier capabilities within 60 seconds.
How proration works
When you upgrade mid-cycle, you are charged the prorated difference for the remainder of your current billing period. The formula is:
prorated_charge = (new_tier_price - current_tier_price) * (days_remaining / days_in_period)
For example, upgrading from Pebble ($9/month) to Boulder ($79/month) on day 10 of a 30-day cycle would result in a charge of:
($79 - $9) * (20 / 30) = $46.67
This charge appears on your next invoice as a separate line item labeled Proration: Tier Upgrade.
What changes immediately
- Rock quota increases. New rocks can be provisioned right away.
- Audit log retention extends backward, exposing historical entries that were previously trimmed.
- New regions become available in the Provision Rock dialog.
- Existing rocks are not migrated automatically. To move a rock to a new region, see Data Residency.
Downgrades
Downgrades take effect at the end of the current billing period to avoid mid-cycle quota violations. If you have more rocks than the lower tier permits, you must archive the excess before the downgrade can complete.