Free vs Pro
Zentro has two tiers: Free (forever) and Pro (subscription). During Early Access, all Pro features are available at no cost.
Pro Early Access is free. No credit card required. How to activate →
Core Philosophy
Safety is not a Pro gate — it's built into every tier. Free includes safety awareness so every developer builds the right habits from day one. Pro raises the enforcement level and removes limits.
Feature Comparison
| Feature | Free | Pro |
|---|---|---|
| Editor & IDE | ||
| SQL editor (multi-tab, Monaco) | ✅ | ✅ |
| SQL formatter | ✅ | ✅ |
| Saved scripts & templates | ✅ | ✅ |
| Keyboard shortcuts | ✅ | ✅ |
| Command palette | ✅ | ✅ |
| Focus mode | ✅ | ✅ |
| Schema & Database | ||
| Schema explorer | ✅ | ✅ |
| ERD visualization | ✅ | ✅ |
| Schema diff (compare two states) | ✅ | ✅ |
| Results | ||
| Data grid (virtualized) | ✅ | ✅ |
| Result filters (WHERE & ORDER) | ✅ | ✅ |
| Row detail sidebar | ✅ | ✅ |
| Result comparison (diff) | ✅ | ✅ |
| Inline result editing | ✅ | ✅ |
| Result export (CSV) | ✅ | ✅ |
| Projects | ||
| Max projects | 5 | Unlimited |
| Environment binding (dev / staging / prod) | ✅ | ✅ |
| DBeaver import wizard | ✅ | ✅ |
| Write Safety | ||
| Environment badge (always visible) | ✅ | ✅ |
| Query risk classification & dangerous-query warnings | ✅ | ✅ |
| Production environment overlay | ✅ | ✅ |
| Affected rows preview | ✅ | ✅ |
| Write safety policy profiles (Strict / Balanced / Relaxed per environment) | ✅ | ✅ |
| Sandbox preview (wrap in transaction) | — | ✅ |
| Type-to-confirm on destructive queries | — | ✅ |
| Cooldown timer before confirming | — | ✅ |
| Reason field (audit context) | — | ✅ |
| Audit log | ✅ | ✅ |
| Schema History | ||
| Automatic schema DDL snapshots, commit timeline & diffs | ✅ | ✅ |
| Schema rollback to a prior snapshot | — | ✅ |
| Transaction assist (recovery workflow) | — | ✅ |
| Security | ||
| App lock with PIN + idle timeout | — | ✅ |
| PII detection & column blur | — | ✅ |
| Analytics | ||
| Query statistics (P95, error rate, trend) | — | ✅ |
| Script Source Control | ||
| Git tracking for saved scripts, commit history & diffs, restore from commit | ✅ | ✅ |
Offline Grace Period
| Plan | Grace period after last license check |
|---|---|
| Free | 24 hours |
| Pro | 7 days |
After the grace period, Zentro reverts to Free behavior until the license is refreshed with an internet connection.
Pricing
Pricing details and the current Early Access offer are on the Zentro website (opens in a new tab).