| Scanning & Speed |
| Scan frequency |
5 min (paid) / 60 min (free) |
Varies by popularity — as fast as ~45 sec |
| Guaranteed scan interval |
Yes — stated rate on every plan |
No — best-effort, no SLA |
| Free tier |
Yes — 2 alerts, email notifications |
Yes — unlimited, always free |
| Search & Coverage |
| Reservation systems covered |
Recreation.gov — 4,600+ campgrounds |
Multiple systems — 10,000+ campgrounds (per Campflare) |
| Wilderness permit alerts |
No |
Yes — Whitney, Enchantments, Yosemite & more |
| Area search (radius-based) |
Yes — search within 10–50 mi |
Not published |
| Public map — no account required |
Yes — Just Opened map |
Yes |
| Date Flexibility |
| Flexible / natural-language dates |
Yes — "any July weekend", "weekdays in Aug" |
Not published |
| Any-night matching |
Yes — get alerted if any night in range opens |
Not published |
| Notifications & Access |
| Email alerts |
Yes (all plans) |
Yes |
| SMS alerts |
Yes (Explorer+) |
Yes |
| Native mobile app |
No — mobile web |
Yes — iOS app |
| Intelligence & Data |
| Cancellation probability score |
Yes — 4-band score per date |
No |
| Historical availability heatmap |
Yes — month × day-of-week grid |
No |
| Pricing |
| Cost |
Free / $7.99 mo / $100 yr |
Always free — no paid tier |