CronPeek vs Cronitor: Detailed Comparison for Cron Monitoring (2026)

Cronitor is the most established name in cron job monitoring. It works well, has a polished dashboard, and integrates with dozens of services. But its per-monitor pricing model means 50 cron jobs cost $100/month. CronPeek monitors the same 50 jobs for $9/month flat. This is a detailed, head-to-head comparison covering pricing at every scale, API design differences, alerting capabilities, setup complexity, integrations, and what happens to your bill as you grow.

What Each Tool Does

Both CronPeek and Cronitor solve the same core problem: detecting when a scheduled task stops running. They both use the dead man’s switch pattern. Your cron job pings a unique URL every time it executes. If the ping does not arrive within the expected interval, you get an alert. Simple, effective, and battle-tested.

The difference is in scope. Cronitor has expanded from pure cron monitoring into a broader monitoring platform that also handles uptime checks, heartbeat monitoring, and status pages. CronPeek is focused exclusively on cron job monitoring with an API-first design. That difference in scope drives the difference in pricing, complexity, and how each tool feels to use day-to-day.

Cronitor overview

Cronitor launched in 2015 and has grown into a monitoring platform covering three areas: cron job monitoring, uptime monitoring, and status pages. Their cron monitoring uses the dead man’s switch approach with optional CLI tooling. They offer a web dashboard for managing monitors, viewing run history, and configuring alerts. Cronitor supports direct integrations with Slack, PagerDuty, OpsGenie, Microsoft Teams, Datadog, and more.

CronPeek overview

CronPeek is a standalone cron job monitoring API built for developers who want dead man’s switch monitoring without platform overhead. You create monitors via a REST API, ping them with curl, and get alerted via email or webhook when a job misses its window. No dashboard lock-in, no CLI to install, no agent running on your servers.

Pricing Breakdown: The Numbers That Matter

Pricing is the most significant difference between the two services, and it compounds as you scale. Here is the math at every level.

Cronitor pricing model

Cronitor uses per-monitor pricing at roughly $2 per monitor per month on their standard plans. They offer tiered plans, but the cost scales linearly with the number of monitors you need:

• Free: 1 monitor (cron, heartbeat, or uptime)
• 5 monitors: ~$10/mo
• 25 monitors: ~$50/mo
• 50 monitors: ~$100/mo
• 100 monitors: ~$200/mo
• 200 monitors: ~$400/mo

This per-monitor model works fine at small scale. But most production environments have more cron jobs than people expect. A single web application might run 5–10 scheduled tasks. Add a data pipeline, a few microservices, and some infrastructure maintenance scripts, and you are at 30–50 monitors before you know it.

CronPeek pricing model

CronPeek uses flat-rate pricing with monitor count tiers:

• Free: 5 monitors, email alerts, REST API
• Starter ($9/mo): 50 monitors, email + webhook alerts, REST API
• Pro ($29/mo): Unlimited monitors, priority alerts, webhook + Slack, REST API

No per-monitor surcharges. No overage fees. No per-seat pricing. The Starter plan covers 50 monitors for your entire team at a flat $9.

Side-by-side cost comparison

API Comparison: How You Create and Manage Monitors

Both services offer REST APIs for creating, listing, and managing monitors. The fundamental workflow is similar, but the design philosophies differ.

Creating a monitor: Cronitor

Cronitor’s API uses a PUT-based upsert pattern. You define a monitor with a key, schedule, and notification preferences:

# Cronitor — create/update a monitor
curl -X PUT https://cronitor.io/api/monitors \
  -u YOUR_API_KEY: \
  -H "Content-Type: application/json" \
  -d '{
    "monitors": [{
      "key": "nightly-db-backup",
      "type": "job",
      "schedule": "0 2 * * *",
      "grace_seconds": 900,
      "notify": ["default"]
    }]
  }'

Cronitor supports batch operations (creating multiple monitors in one call), cron expression parsing, and detailed scheduling configuration. The API is well-documented and mature.

Creating a monitor: CronPeek

CronPeek uses a straightforward POST to create a monitor with an interval in seconds and an optional grace period:

# CronPeek — create a monitor
curl -X POST https://cronpeek.web.app/api/v1/monitors \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Nightly DB Backup",
    "interval": 86400,
    "grace": 900
  }'

# Response includes the monitor ID for pinging
# { "id": "mon_abc123", "pingUrl": "https://cronpeek.web.app/api/v1/ping/mon_abc123" }

CronPeek’s API is intentionally minimal. Interval-based rather than cron-expression-based, which means it works with any scheduling system, not just crontab. The trade-off is you don’t get Cronitor’s cron expression validation.

Pinging a monitor

Both services use the same pattern—a simple GET request to a unique URL:

# Cronitor ping
curl https://cronitor.link/p/YOUR_API_KEY/nightly-db-backup?state=complete

# CronPeek ping
curl https://cronpeek.web.app/api/v1/ping/mon_abc123

Cronitor supports explicit state reporting (run, complete, fail) which lets you track job duration and distinguish between “did not start” and “started but failed.” CronPeek uses a simpler binary model: ping arrived (job ran) or ping missing (job failed). For most dead man’s switch use cases, the binary model is sufficient.

Alerting: Channels, Speed, and Configuration

When a cron job fails, the alert is the entire product. How fast you get notified, where you get notified, and how configurable the alerting is—these are make-or-break features.

Cronitor alerting

Cronitor has a mature notification system with direct integrations for:

• Email
• Slack (native app)
• PagerDuty
• OpsGenie
• Microsoft Teams
• Datadog
• Webhooks
• SMS (on higher plans)

You can configure notification lists, set escalation policies (alert email first, then PagerDuty after N minutes), and assign different alert channels to different monitors. The dashboard lets you manage all of this visually.

CronPeek alerting

CronPeek supports two alert channels:

• Email — immediate notification when a monitor misses its window
• Webhooks — HTTP POST to any URL with a JSON payload containing monitor details, expected time, and failure reason

The webhook approach is intentionally flexible. A single webhook endpoint can route alerts to Slack (via incoming webhook URL), PagerDuty (via Events API v2), Discord, Telegram, or any custom system. You write the routing logic once and it works for any destination.

# CronPeek webhook payload example
{
  "event": "monitor.missed",
  "monitor": {
    "id": "mon_abc123",
    "name": "Nightly DB Backup",
    "interval": 86400,
    "lastPing": "2026-03-28T02:01:14Z",
    "expectedBy": "2026-03-29T02:16:14Z"
  }
}

# Forward to Slack via incoming webhook — one-time setup
curl -X POST https://hooks.slack.com/services/YOUR/WEBHOOK/URL \
  -d '{"text": "ALERT: Nightly DB Backup missed its schedule"}'

Setup Complexity: From Zero to Monitoring

How long does it take to go from “I want to monitor this cron job” to “I will get an alert if it fails”?

Cronitor setup path

1. Create a Cronitor account
2. Navigate the dashboard to create a new monitor
3. Configure the schedule (cron expression or interval), grace period, and notification channels
4. Copy the ping URL or install the Cronitor CLI
5. Add the ping to your crontab or wrap your command with cronitor exec

Cronitor also offers a CLI tool that can auto-discover your system crontab and create monitors automatically. This is genuinely useful for brownfield setups where you have dozens of existing cron jobs. The CLI wraps your commands transparently, reporting start, completion, and failure states.

# Cronitor CLI approach
cronitor discover  # auto-reads your crontab
cronitor exec nightly-db-backup /scripts/backup.sh

CronPeek setup path

1. Get an API key from CronPeek
2. Create a monitor with one API call
3. Append curl to your crontab entry

No dashboard to navigate, no CLI to install, no auto-discovery. You create monitors programmatically and add pings manually. For infrastructure-as-code teams who manage crontabs via Ansible, Chef, Puppet, or Terraform, this API-first approach integrates cleanly into existing provisioning workflows.

# CronPeek setup — 3 commands total

# 1. Create the monitor
MONITOR=$(curl -s -X POST https://cronpeek.web.app/api/v1/monitors \
  -H "Authorization: Bearer $CRONPEEK_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "Nightly DB Backup", "interval": 86400, "grace": 900}')

# 2. Extract the monitor ID
MON_ID=$(echo $MONITOR | jq -r '.id')

# 3. Add to crontab
(crontab -l; echo "0 2 * * * /scripts/backup.sh && curl -fsS --retry 3 https://cronpeek.web.app/api/v1/ping/$MON_ID") | crontab -

Integrations and Ecosystem

This is where Cronitor has a clear advantage in breadth. After years of development, Cronitor has built native integrations with the tools that ops teams use daily:

• Incident management: PagerDuty, OpsGenie, VictorOps
• Communication: Slack, Microsoft Teams, Discord
• Observability: Datadog
• Infrastructure: Terraform provider for infrastructure-as-code
• Status pages: Built-in status page feature
• Uptime monitoring: HTTP/TCP checks alongside cron monitoring

CronPeek’s integration surface is smaller by design:

• Email alerts — built-in, no configuration needed
• Webhooks — connect to anything that accepts HTTP POST requests
• REST API — full CRUD for monitors, programmatic access to run history

The webhook acts as a universal adapter. You can pipe CronPeek alerts into Slack, PagerDuty, Discord, or a custom Lambda function that does whatever you need. But it is a “some assembly required” approach compared to Cronitor’s click-to-connect integrations.

Scaling Costs: What Happens as You Grow

This is where flat-rate pricing versus per-monitor pricing creates a divergence that gets more dramatic over time.

Consider a typical growth trajectory for a startup:

• Month 1: 5 cron jobs (initial setup, core tasks)
• Month 6: 20 cron jobs (more services, more automation)
• Month 12: 50 cron jobs (multiple services, data pipelines, cleanup scripts)
• Month 18: 100 cron jobs (microservices, per-tenant tasks, infrastructure automation)
• Month 24: 200 cron jobs (scaling everything)

Here is what your monitoring bill looks like over that two-year period:

Cumulative spend over 24 months:

• CronPeek: approximately $390 total
• Cronitor: approximately $3,240 total
• Difference: $2,850 saved with CronPeek

That $2,850 buys a lot of infrastructure, a contractor for a week, or just stays in your bank account. For bootstrapped startups and small teams, monitoring costs that scale linearly with infrastructure growth create an uncomfortable incentive to not monitor things. Flat-rate pricing eliminates that perverse incentive.

When to Choose Cronitor

Cronitor is the right choice when:

• You need native integrations out of the box — PagerDuty, OpsGenie, and Slack integrations with zero webhook wiring. If your team relies on these tools and values click-to-connect setup, Cronitor delivers.
• You want uptime monitoring and cron monitoring in one tool — Cronitor monitors HTTP endpoints, TCP ports, and cron jobs in a single dashboard. If you are consolidating monitoring tools, this is valuable.
• You need auto-discovery of existing cron jobs — the cronitor discover CLI is genuinely useful for onboarding servers with dozens of existing cron entries.
• You want a polished web dashboard — Cronitor’s UI for viewing run history, configuring alerts, and managing monitors is more mature than CronPeek’s.
• Budget is not a primary concern — if $100–$400/month for monitoring is a rounding error in your infrastructure budget, Cronitor’s feature depth justifies the cost.

When to Choose CronPeek

CronPeek is the right choice when:

• Cost matters — $9/month for 50 monitors versus $100/month. $29/month for unlimited versus $400/month. The savings are real and compound over time.
• You want API-first monitoring — if you manage infrastructure with code (Ansible, Terraform, custom scripts), CronPeek’s REST API fits naturally into your provisioning workflow.
• You are a solo developer or small team — flat-rate, no per-seat pricing, a generous free tier. You can monitor every cron job in your stack without budgeting for it.
• You run a lot of cron jobs relative to your team size — one developer with 40 cron jobs. Per-monitor pricing punishes this; flat-rate pricing rewards it.
• Simplicity is a feature — no CLI to install, no dashboard to learn, no agent to run. Create a monitor via API, add a curl to your crontab, move on with your day.
• You already have alerting infrastructure — if you have a Slack webhook, a PagerDuty Events API endpoint, or a custom alerting service, CronPeek’s webhook output pipes directly into what you already built.

Migrating from Cronitor to CronPeek

If you are considering switching, the migration is straightforward because both tools use the same underlying pattern: ping a URL when a job runs.

1. Export your Cronitor monitors — note the name, schedule, and grace period for each monitor via the Cronitor API or dashboard.
2. Create equivalent monitors in CronPeek — use the REST API to create each monitor with the corresponding interval and grace period.
3. Update your crontab entries — replace the Cronitor ping URL with the CronPeek ping URL in each crontab line.
4. Run in parallel — for the first day or two, ping both services to verify CronPeek is receiving pings correctly before decommissioning Cronitor.
5. Configure alerting — set up your email and webhook alert destinations in CronPeek.

# Before (Cronitor)
0 2 * * * /scripts/backup.sh && curl -fsS https://cronitor.link/p/KEY/nightly-backup?state=complete

# After (CronPeek)
0 2 * * * /scripts/backup.sh && curl -fsS --retry 3 https://cronpeek.web.app/api/v1/ping/mon_abc123

# During migration (ping both)
0 2 * * * /scripts/backup.sh && curl -fsS https://cronitor.link/p/KEY/nightly-backup?state=complete && curl -fsS --retry 3 https://cronpeek.web.app/api/v1/ping/mon_abc123