Pick the plan that matches your calendar volume.
Pro adds Autofix (get a clean `.ics`) + bigger limits. Stripe handles billing when you upgrade. Staying on Free? You can keep validating without charge.
Plan comparison
| Capability | Free | Pro |
|---|---|---|
| Requests per minute | 5 | 30 |
| Monthly quota | 50 validations | 5,000 validations with Autofix |
| Autofix on web | No | Yes |
| Autofix API output | No | Yes |
| Bulk ZIP files | Not available | Up to 200 files |
| Bulk ZIP size | N/A (ZIP not supported) | 25 MiB compressed |
| Single upload size | 1 MiB | 5 MiB |
| File history retention | 24 hours (metadata only) | 30 days with downloads |
| Price | $0 Forever | $19/month or $190/year |
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Free tier
$0/month
- ✓ Unlimited web validations (10 uploads / 5 min burst)
- ✓ See error codes and brief summaries
- ✓ Cross-client compatibility checks
- ✓ 50 API calls/month
- ✓ 24-hour history of recent validations
- ✗ No autofix
- ✗ No fixed file downloads
- ✗ No ZIP uploads (single files only)
Pro tier
$19/month (or $190/year - save 17%)
Everything in Free, plus:
- ✓ Download fixed ICS files on web
- ✓ API autofix with
autofix=1flag - ✓ 5,000 API calls/month
- ✓ 30 requests/minute
- ✓ Bulk ZIP uploads (200 files / 25 MiB)
- ✓ Larger file limits (5 MiB)
- ✓ 30-day history with downloadable results
- ✓ Email support (48hr response)
Need more than Pro? Contact us for custom plans.