Is My App Online Right Now?
Check immediately by visiting your app URL in an incognito browser window. For ongoing monitoring, set up UptimeRobot (free) which checks your URL every 5 minutes and alerts you if it goes down. You can also use Down For Everyone Or Just Me (isitdownorjustme.com) for a quick one-time check.
Why this matters
You just deployed your app, shared the link, or woke up wondering if it is still running. The anxiety of not knowing whether your app is reachable is one of the most common worries for new builders. A simple check can ease that anxiety instantly — but ongoing monitoring is what gives you lasting peace of mind.
What's at stake
If your app is down right now and you do not know it, every person who clicks your link gets an error page. First impressions matter — a potential user who sees a broken page will not come back to check again later.
In detail.
Quick Check: Is It Up Right Now?
Method 1: Incognito Browser
Open an incognito/private browsing window and visit your app URL. This avoids cached versions and shows you exactly what a new visitor sees. If it loads, your app is online.
Method 2: External Checker
Use a free tool like isitdownorjustme.com or downforeveryoneorjustme.com. Enter your URL and it checks from an external server. This tells you if the problem is your internet connection or your actual app.
Method 3: Multiple Locations
For a more thorough check, use updown.io or check-host.net which test your URL from multiple geographic locations. Your app might be up in the US but down in Europe if there is a CDN issue.
Ongoing Monitoring
Checking manually is fine for right now, but you need automated monitoring for peace of mind:
UptimeRobot (Free)
- Checks: Every 5 minutes
- Monitors: 50 URLs on free plan
- Alerts: Email, Slack, Discord, webhooks
- Extras: Public status page, response time tracking
Better Stack (Free Tier)
- Checks: Every 3 minutes
- Features: Incident management, status pages, on-call scheduling
- Best for: Builders who want a more complete monitoring stack
Vercel/Netlify Built-In
If you deploy on Vercel or Netlify, they provide basic uptime information in their dashboards. Check your deployment status and function logs for issues.
Common Reasons Your App Might Be Down
- Deployment failed — Check your hosting provider for build errors
- Domain DNS not configured — Verify DNS records point to your hosting
- SSL certificate expired — Hosting providers usually auto-renew, but check
- Database connection failed — Check your database provider status
- Rate limit exceeded — Some free tiers have request limits
Never wonder if your app is online — know for certain
- Continuous uptime monitoring with instant alerts
- Public status page showing your app reliability
- Historical uptime data to prove your app is dependable
Frequently asked questions.
Several possible causes: your browser has a cached version, your DNS has not propagated yet (can take up to 48 hours), there is a regional CDN issue, or your deployment did not actually complete. Test in an incognito window and use an external checker to rule out local caching.
Technically yes, but a slow app feels broken to users. If your app takes more than 3 seconds to load, users will leave. Check your hosting provider for resource limits, optimize images, and consider upgrading your plan if you are on a free tier with limited resources.
For an early-stage app, 99.9% uptime (about 8 hours of downtime per year) is a reasonable target. Most hosting providers like Vercel and Netlify achieve this easily. The key is not perfection — it is knowing when you are down and recovering quickly.
Before launch. Set up UptimeRobot when you deploy your app, even if nobody is using it yet. This way, you know your app is online from day one and you catch issues during the quiet pre-launch period when the stakes are low.