xAlertThe alert that gets through at 3 a.m.
xAlert breaks through silent mode and Do Not Disturb with a full-screen alarm, so an outage never waits until morning. Monitor URLs, SSL certificates and any numeric metric.
No account needed to start. Free on Google Play.
Production API is down
api.example.com
3 failed checks in a row. HTTP 503 for 90 seconds.
Certificate expires in 3 days
shop.example.com
No renewal detected. Visitors will see a security warning.
Queue length over threshold
checkout_queue
1842 jobs waiting. Threshold is 500, breached for 12 minutes.
Check your URL availability now
One check, no account. See what xAlert sees before you install anything.
- Android app, iOS coming soon
- Open REST API and webhooks
- No account required to start
- Free tier, no card required
Why a normal push notification is not enough
Sleep mode, focus modes and Do Not Disturb silence exactly the notification you cannot afford to miss. xAlert is built to get past them.
- Full-screen alarm with sound and vibration
- Works while the phone is silenced or in Do Not Disturb
- Mute a single alert or everything – just for you or for the whole team
01
Add what to watch
Paste a URL, or push any numeric metric from your own scripts through the REST API.
02
Set the threshold
Choose how often to check and what counts as a problem. Checks run as often as every minute.
03
Get woken up
When something breaks, xAlert takes over the screen until you acknowledge it.
Why Choose xAlert?
Alerts that break through Do Not Disturb
Vibration + sound + full-screen alert, even in sleep mode. Get notified instantly of critical issues, wherever you are.
URL & SSL check every minute
HTTP codes, timeouts, certificate expiration – detect downtime and expired SSL instantly.
Monitor any numeric metrics
CPU, response time, active users, business KPIs – set thresholds and get alerted when they’re exceeded.
Webhooks & Open REST API
Send custom payloads, update monitors programmatically. Integrates with your scripts, CI/CD, Prometheus, Grafana, Kuma, and more.
Projects & Teams
Assign users to specific projects so they only receive relevant alerts. Clear separation of services and responsibilities means less noise and confusion.
Smart noise filtering
Algorithms recheck your site within seconds to confirm real issues. Fewer false alarms – only wake up for actual problems.
Checks from multiple regions
Paid plans verify every URL from several regions before an alert fires, so a single failing probe never wakes you – and the alert says whether the site is down everywhere or only in one region. The free plan checks from one location in Germany.
How much does it cost?
For trying it out and small setups
Free
$0
- Projects
- 1
- Members per project
- 3
- URLs per project
- 5
- URL check interval
- 5m
- Monitors per project
- 3
- Alerts per project
- 3
- Alert receiver cooldown
- 5m
- History retained
- 7d
- Check regions
- 1
For developers and small teams
RecommendedPro
$8 / per month
billed annually · $96 per year
- Projects
- 5
- Members per project
- 5
- URLs per project
- 50
- URL check interval
- 1m
- Monitors per project
- 50
- Alerts per project
- 50
- Alert receiver cooldown
- 0s
- History retained
- 30d
- Check regions
- 2
For agencies and larger teams
Team
$25 / per month
billed annually · $300 per year
- Projects
- 25
- Members per project
- 25
- URLs per project
- 300
- URL check interval
- 1m
- Monitors per project
- 300
- Alerts per project
- 300
- Alert receiver cooldown
- 0s
- History retained
- 12M
- Check regions
- 5
Frequently asked questions
Does xAlert really work in Do Not Disturb mode?
Yes. xAlert requests the Android permissions needed to raise a critical alert that plays a sound and shows a full-screen notification even while the device is silenced. You can turn this off per alert.
What can I monitor?
Websites and API endpoints over HTTP, SSL certificate expiry, and any numeric metric you send us such as CPU, memory, queue length or revenue.
How often are checks run?
Every 5 minutes on the free plan and as often as every minute on premium. During an incident xAlert retries faster to confirm the problem before waking you.
Do I need an account to try it?
No. You can start anonymously and create your first project right away. Link an email later so you do not lose access when you change device.
Can I send alerts to my team?
Yes. Invite people to a project and everyone assigned to it receives the alert on their own devices. Free projects are single-user.
Can I integrate it with my own tools?
Yes. There is an open REST API for pushing metrics and receiving webhooks, so you can wire it into CI pipelines, Prometheus, Grafana or your own scripts.
Ready to Get Started?
Get the Android app on Google Play and start monitoring in minutes. iOS is on the way.
No registration needed
Start exploring anonymously. Create monitors, get alerts, then link an account later so you never lose access.
Free
Build your first project, add URLs, monitors and alerts – all completely free. Subscribe only when you grow.
