Simple, Transparent Pricing
Start free and scale as you grow. No hidden fees, cancel anytime.
AI-powered noise reduction is included on every plan — even Free.
Monthly
Annual
/mo
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AI-powered change detection
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Email notifications
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1-hour check interval
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7-day history
/mo
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All Free features
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Webhook notifications
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30-minute check interval
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30-day history
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Uptime monitoring
/mo
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All Starter features
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Slack notifications
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15-minute check interval
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90-day history
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RSS feed monitoring
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JSON API monitoring
/mo
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All Pro features
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5-minute check interval
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365-day history
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Priority support
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500 SMS/month
Compare Plans
| Feature | Free | Starter | Pro | Business |
|---|---|---|---|---|
| Signals | 3 | 10 | 50 | 200 |
| Check Interval | 60 min | 30 min | 15 min | 5 min |
| Channels | Email, Webhook | Email, Slack, Webhook | Email, Slack, Webhook | |
| History | 7 days | 30 days | 90 days | 365 days |
| Smart Noise Filtering | ||||
| SMS Quota | 100/mo | 500/mo |
Smart noise filtering uses AI to ignore irrelevant changes like timestamps, rotating ads, and session tokens — so you only get alerted when something meaningful changes.
Frequently Asked Questions
Yes! You can upgrade or downgrade your plan at any time. When upgrading, you'll be charged a prorated amount. When downgrading, credit will be applied to your next billing cycle.
Your existing signals will continue to work, but you won't be able to create new ones until you upgrade or remove an existing signal.
We offer a generous free plan with 3 signals so you can try SignalWhen before committing. No credit card required to get started.
Annual plans are billed once per year at a discounted rate, saving you approximately 17% compared to monthly billing.
Depending on your plan, you can receive notifications via email, Slack, webhooks, and SMS. Email is available on all plans.
Every time a change is detected, our AI analyzes the content to separate signal from noise. It automatically filters out irrelevant changes like timestamps, session tokens, rotating ads, and cache busters. You only get alerted when something meaningful changes — such as a price drop, new content, a status update, or an API response shift. Smart noise filtering is included on every plan, including Free.
Absolutely. There are no contracts or cancellation fees. You can cancel your subscription at any time and continue using it until the end of your billing period.