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HeyOnCall

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What HeyOnCall is

HeyOnCall brings website and API checks, heartbeat and cron monitoring, SSL validation, incident handling, schedules, escalations, and alerts into one service. HTTP and HTTPS checks cover uptime and performance, response assertions, redirects, and request and response inspection. SSL monitoring validates certificates and chains, with warnings before expiration. For on-call coverage, teams can create timezone-aware rotations, change or trade shifts, and sync calendars through Google Calendar, Outlook, or iCalendar feeds. Incidents that go unacknowledged can move through configurable escalation levels to another user, a rotation, or everyone in a rotation. Critical Alerts on iOS and Android can bypass Do Not Disturb, silent or vibrate modes, and volume settings, and repeat until acknowledged.

Alerts can come from Datadog, Prometheus Alertmanager, Uptime Kuma, and other webhook-capable tools, and can be delivered through Slack, email, Telegram, or webhooks. An API supports custom application triggers, incident resolution, and custom payloads. The Free Trial for evaluating costs nothing, Solo costs $3 a month, and Pro costs $32 a month. The trial supports 10 users and has fewer triggers; Solo is for one user and has no on-call scheduling, while Pro allows unlimited users and includes all on-call scheduling. HeyOnCall launched in 2022 and is operated by CircuitLab, Inc.

Who it suits

HeyOnCall suits solo founders and small engineering teams looking for website, API, heartbeat, or cron monitoring alongside incident paging. Teams that need scheduled on-call rotations, calendar sync, and escalation paths can use its Pro plan; individuals can choose Solo without on-call scheduling.

What it does well

Checks HTTP and HTTPS uptime, performance, assertions, and redirects.
Monitors SSL certificates and chains, with pre-expiration warnings.
Supports timezone-aware rotations, shift trades, and calendar feeds.
Escalates unacknowledged incidents through configurable levels.
Critical Alerts can repeat until acknowledged on iOS and Android.
Connects listed monitoring sources and sends alerts through multiple channels.

What to know first

Solo supports one user and has no on-call scheduling.
The evaluation plan is limited to 10 users and fewer triggers.
Paid plans are limited to 1000 triggers of each listed type.

Limits

The Free Trial for evaluating costs nothing, allows 10 users, and has 3 outbound probe triggers and 1 each for inbound liveness, Datadog, Prometheus, and manual triggers. It includes all on-call scheduling but limits checks to HEAD requests without request headers or a body. Solo costs $3 a month for one user, includes 1000 triggers per listed type, and has no on-call scheduling; paid plans are limited to 1000 triggers of each listed type.

Plans

Plan	Billed and limits	Price
Free Trial for evaluating	$0 / month total (not per user) · 10 users · 3 outbound probe triggers · 1 each inbound liveness, Datadog, Prometheus, and manual trigger · all on-call scheduling · HEAD requests only; no request headers or body	Free
Free Trial for evaluating	$0 / year total (not per user) · 10 users · 3 outbound probe triggers · 1 each inbound liveness, Datadog, Prometheus, and manual trigger · all on-call scheduling · HEAD requests only; no request headers or body	Free
Solo for individuals	$3 / month total (not per user) · 1 user · 1000 triggers per listed type · no on-call scheduling · HEAD/GET/POST/PUT/PATCH requests with custom headers and body	$3 a month
Solo for individuals	$30 / year total (not per user) · 1 user · 1000 triggers per listed type · no on-call scheduling · HEAD/GET/POST/PUT/PATCH requests with custom headers and body	$30 a year
Pro for teams	$32 / month total (not per user) · Unlimited users · 1000 triggers per listed type · all on-call scheduling · HEAD/GET/POST/PUT/PATCH requests with custom headers and body	$32 a month
Pro for teams	$320 / year total (not per user) · Unlimited users · 1000 triggers per listed type · all on-call scheduling · HEAD/GET/POST/PUT/PATCH requests with custom headers and body	$320 a year

As heyoncall.com lists them, read 30 Sept 2026. The maker's own page has the final word.

Getting started

Visit https://heyoncall.com/.
Choose the Free Trial for evaluating, Solo, or Pro plan.
Use the web platform, or choose the Android or iOS app for mobile alerts.
Connect a listed monitoring source or use the API for custom application triggers.
Set up alert delivery and, on a plan with scheduling, configure on-call rotations.

Verdict

Choose HeyOnCall if you want monitoring and incident paging with configurable escalation, or need on-call scheduling on Pro. Solo is for one user and excludes on-call scheduling; the free evaluation plan is limited to 10 users and fewer triggers.

Questions

Is there a free plan?

The listed Free Trial for evaluating costs nothing. It allows up to 10 users and includes fewer triggers than the paid plans.

How much do the paid plans cost?

Solo costs $3 a month total, and Pro costs $32 a month total. Both prices are monthly, not per user.

Which platforms does HeyOnCall support?

Its listed platforms are Android, iOS, web, and API.

Does it support on-call schedules and escalations?

Yes. Rotations support timezone-aware schedules, shift edits and trades, and calendar integration. Unacknowledged incidents can escalate through configurable levels.

Which alert sources and channels are listed?

Sources include Datadog, Prometheus Alertmanager, Uptime Kuma, and other webhook-capable tools. Channels include Slack, email, Telegram, and webhooks.

Who operates HeyOnCall?

The operator identified in the terms is CircuitLab, Inc., a Delaware corporation.

Facts from HeyOnCall's own pages

Alerting: Its iOS and Android Critical Alerts can bypass Do Not Disturb, silent/vibrate modes, and volume settings, and repeat until acknowledged. · heyoncall.com, 30 Sept 2026
API: Custom application triggers can fire alerts and resolve incidents through the API, and the product supports custom payloads. · heyoncall.com, 30 Sept 2026
Audience: The product is for small engineering teams and solo founders seeking reliable paging, simple setup, and fewer moving parts. · heyoncall.com, 30 Sept 2026
Company: HeyOnCall was built by two engineers who met at MIT EECS and launched the product in 2022. · heyoncall.com, 30 Sept 2026
Escalations: Unacknowledged incidents can escalate through configurable levels to another user, rotation, or everyone in a rotation. · heyoncall.com, 30 Sept 2026
Founded: 2022 · heyoncall.com, 28 Sept 2026
Integrations: Listed monitoring sources include Datadog, Prometheus Alertmanager, Uptime Kuma, and other webhook-capable tools; alert channels include Slack, email, Telegram, and webhooks. · heyoncall.com, 30 Sept 2026
Monitoring: Website and API monitoring includes HTTP/HTTPS uptime and performance checks, response assertions, redirects, and request/response inspection. · heyoncall.com, 30 Sept 2026
Notable limit: The pricing page limits each paid plan to 1000 triggers of each listed type, while the free evaluation plan limits the user count to 10 and has fewer triggers. · heyoncall.com, 30 Sept 2026
On-call: On-call rotations support timezone-aware scheduling, shift edits and trades, and calendar integration with Google Calendar, Outlook, and iCalendar feeds. · heyoncall.com, 30 Sept 2026
Operator: The terms identify the operator as CircuitLab, Inc., a Delaware corporation. · heyoncall.com, 30 Sept 2026
Product: HeyOnCall combines website and API monitoring, heartbeat and cron monitoring, SSL checks, incident management, on-call schedules, escalations, and alert delivery. · heyoncall.com, 30 Sept 2026
SSL checks: SSL monitoring validates certificates and chains and can warn before a certificate expires. · heyoncall.com, 30 Sept 2026
Support: The maker directs users with pricing questions to [email protected] and invites feature questions by email. · heyoncall.com, 30 Sept 2026

Where HeyOnCall stands on Freedom251

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