blitz.cloud FAQ - hosting, Docker, databases, pricing and GDPR

blitz.cloud is a European hosting platform run by BlitzWorks, a German company. You can put open-source apps, public Docker images and your own code from GitHub online under your own free address, with managed databases and automatic HTTPS. Below are short answers to the questions people ask most; each links to the page with the details.

About blitz.cloud

What is blitz.cloud?

blitz.cloud is a hosting platform where you claim an address like lena.blitz.cloud and run apps under it. That can be one of 119 open-source apps from the App Store, any public Docker image, or your own code from GitHub, which we build and put online again every time you push. Managed PostgreSQL, MariaDB and Redis databases, automatic HTTPS and nightly database backups come with it. It is built and operated by BlitzWorks UG in Regensburg, Germany.

Is blitz.cloud related to Blitz.js, blitz.dev or StackBlitz?

No. blitz.cloud is an independent product of BlitzWorks UG and has no connection to Blitz.js, blitz.dev, StackBlitz or Bolt. See about.

Who is blitz.cloud for?

People who want their own apps online without running a server: developers with a side project or a small API, self-hosters who want Vaultwarden or Uptime Kuma without a home server, and anyone who prefers their data in the EU.

Is blitz.cloud production ready?

It's out of beta since 26 September 2026. Hosting, builds from GitHub, databases, backups and the paid plan run for real, and each app's page shows its uptime. Some things are still missing, like private Docker images or a choice of region. Check what's live before you put something important on it.

Until 31 March 2027 blitz.cloud is in its start phase. During that time we may cancel plans and accounts with 14 days' notice and without giving a reason. You then get back the whole running month or year you have paid for. See the terms, section 6a.

How do I get help?

Click "Give feedback" at the top of the dashboard, or write to hallo@blitzworks.io. We read every message and answer by email.

Can I sign up with a throwaway email address?

No. Throwaway addresses are not accepted, also not through GitHub or Google sign-in. Use an address that stays yours, because we send password resets and notices about your account and apps there. Privacy-friendly addresses, such as forwarding addresses, are fine as long as mail reaches you. The rule is in section 2 of the terms.

Can I have more than one account?

No, each person has one account. Addresses that land in the same mailbox, such as name+test@gmail.com and name@gmail.com, count as the same account. We refuse a second one at signup. If you already have several, the one you used last stays active and we suspend the others. Nothing is deleted. The rule is in section 2 of the terms.

Pricing

Is blitz.cloud free?

Yes. The free plan costs 0 EUR, needs no credit card and has no time limit. It includes 5 apps, 512 MB of reserved memory, 10 GB of storage and one managed database. See pricing.

Is there a paid plan?

Yes, two. Pro costs 7 EUR a month including VAT, for your whole account, with 50 apps, 4 GB of memory, 50 GB of storage, 5 databases, your own domains and apps that stay awake. Business costs 19 EUR a month and has everything in Pro with more room. Both renew monthly, or yearly at 70 EUR and 190 EUR, and you can cancel any time. You buy them in the dashboard under Settings. You can try Pro free for 14 days; you add payment details only if you decide to keep it. Nothing is charged if you don't. The first month is refunded if you ask within 30 days. See pricing.

Can my business get an invoice with its VAT ID?

Yes. Enter the VAT ID at checkout and it goes on every invoice. A business in another EU country is billed without VAT under the reverse-charge rule. Invoices are under Settings.

How do I cancel Pro?

In Settings, under Plan and usage, or on the cancel page, which works without signing in. Pro runs until the end of the month you have paid for. If your account then uses more than the free plan includes, nothing changes for 14 days, and nothing is ever deleted. See the terms.

Do free apps go to sleep?

Yes. An app nobody has visited for 15 minutes goes to sleep. It wakes when a person opens it in a browser, which takes a few seconds. Requests from programs, such as uptime monitors, scripts or webhooks, don't wake it. On Pro an app sleeps after two hours, and you can keep it awake. Bots and background workers without an address never sleep. A database sleeps when every app linked to it sleeps or is paused, and starts again before the app wakes. One without a linked app keeps running.

Why does my free app show "Made with blitz.cloud"?

On the free plan, the HTML pages your apps serve show a small "Made with blitz.cloud" link in a bottom corner. It loads nothing from other servers, sets no cookie and tracks nobody. Visitors can hide it, and pages whose Content-Security-Policy does not allow it don't get it. JSON, images and downloads are never changed. On Pro and Business it is off, and you can turn it on in an app's Settings. See the terms, section 9.

Is there a bandwidth limit?

There's no bandwidth quota and no traffic bill. Outgoing traffic is limited in speed instead: 50 Mbit/s per app on the free plan, 200 Mbit/s on Pro.

Deploying

Can I deploy any Docker image?

You can deploy public images from Docker Hub, ghcr.io, Quay and other public registries that are built for amd64, including images that run as root. Private images aren't supported yet. See deploy a Docker image.

Why does my Docker image not start?

The usual reasons: it is only built for arm64, it listens on a different port than the one chosen, or it is missing a setting it needs. The app page says which in a sentence and shows the last log lines. See app status and logs.

My app has been starting for a long time. What can I do?

The first start downloads the app, and a large image can take a few minutes. If it stays on Starting much longer, the app usually runs but nothing answers on the port you chose. Look in its logs for the port it listens on and set that port on the app's Settings tab. If the page says there is no room on blitz.cloud right now, that one is on us: we add servers, and the app starts by itself once there is room. See app status and logs.

Can I deploy from GitHub with git push?

Yes. Connect your GitHub account, pick a repository, public or private, and every push to its branch is built and put online; pushes in quick succession become one build of the newest commit (on the free plan at most every 15 minutes). The version running stays up until the new one works. Without connecting, you can still paste a link to any public project and fetch the newest code with a button. A project without a Dockerfile gets one written for it. See deploy from GitHub.

Can I host a Node.js, Python or Go app?

Yes. Push the code to GitHub and let us build it, with your Dockerfile or one we write. Or package the app in an image that listens on a port such as 8080, push it to a public registry, and deploy it from the dashboard.

Can I host a static website?

Yes, inside a small web server image such as nginxinc/nginx-unprivileged, which runs without root and listens on port 8080. Put your built files into the image and deploy it like any other.

Does blitz.cloud support serverless functions?

No. blitz.cloud runs long-running containers, not functions. An app sleeps after 15 minutes without visitors and wakes when a person opens it in a browser. On Pro you can keep it awake so there is no wait at all.

Can I run a project with several services, like a docker-compose setup?

Yes. A project whose compose file describes a web front end, an API and a worker goes online as one app with one address. The API can answer at /api, the worker runs in the background, and a step like database migrations can run before each new version. Each part that keeps running counts as one of your plan's apps. For a monorepo you can also build just one folder, like apps/web. See deploy from GitHub.

What happens when a build fails?

The version that's running stays online. The app page says in one sentence what went wrong and lists the steps that fix it, each with a button: add a missing key, set up a database, use another Dockerfile. What blitz.cloud can fix safely, it fixes by itself.

A message says the problem is on our side. Do I need to do anything?

No. When a build fails because of us, for example because we ran out of room to store it, the app page says so and we build it again by itself. The version that's running stays online. If it still hasn't gone through later that day, tell us with "Give feedback" in the dashboard.

Can I go back to an earlier version?

Yes. The Activity tab lists everything that happened to an app, and "Put this version back" works on the last 10 versions that went live.

How do I delete an app?

Open the app, go to its Settings tab and use "Delete this app". You type the app's name to confirm. If it has a database, you choose whether to keep it. The app's files on disk are deleted, and that can't be undone.

Can I run tasks on a schedule, like a cron job?

There's no built-in scheduler yet. You can run your own: a small project from GitHub with a scheduler inside, switched to "Runs in the background". Background apps never sleep, so the schedule keeps running. On the free plan a background app stops after 2 days with no sign-in, no deploy and no visit to the dashboard, with an email one day before. Apps like n8n that run their own schedules only do so while they are awake, which on the free plan means within 15 minutes of the last visit. See bots and background workers.

Is there a command-line tool?

Not yet. Besides the dashboard, scripts and AI assistants can manage your apps through our MCP server, using an API key from the dashboard. See connect an AI assistant.

How do I know my app is up?

Each app's Overview shows how often it answered this week, from a check once a minute, next to its requests and the data it served. You also get an email when a deploy fails or we have to stop an app. You choose which emails you want under Settings > Notifications.

Can an app be private?

Yes. Connect Tailscale by signing in, upload a WireGuard config, or add a device in the dashboard and scan its QR code with the WireGuard app. Then switch the app to private. It keeps its address and HTTPS but only opens on your own devices. See private apps.

Can I connect an AI assistant like Claude?

Yes. blitz.cloud has an MCP server, so Claude, ChatGPT, Cursor, VS Code and other MCP clients can deploy and manage your apps. Most of them sign in with your blitz.cloud account; scripts can use an API key from the dashboard. See connect an AI assistant.

Databases and backups

Which databases does blitz.cloud offer?

PostgreSQL 17, MariaDB 11.4 and Redis, served by Valkey 8. MongoDB is not offered. See databases.

Can I connect to my database from my computer?

No. Databases have no public address and only accept connections from apps in your own account.

Are my databases backed up?

Yes. Every running database is copied off our servers every night, and the free plan keeps 7 nights. PostgreSQL and MariaDB can be restored with one button. See backups.

Are my app's files backed up?

On Pro, yes. Every night the files your app keeps on disk are copied off our servers, and 30 nights are kept. You put one back from the app's Settings tab, and the restore can be undone. On the free plan only databases are copied, so keep your own copy of anything important.

Is there a file manager for my app's files?

Not yet. An app keeps its files in its kept folders, and you work with them through the app itself, like uploads in Ghost or WordPress. One app can't see another app's files, so a file manager app from the store can't open them either. If you need files out, write to hallo@blitzworks.io and we help. See environment variables and files.

Addresses and domains

Do I get HTTPS?

Yes. Every address and every app subdomain gets HTTPS from certificates that are issued and renewed automatically.

Can I use my own domain?

Yes, on Pro. Connect a domain you own to any app, with HTTPS, in three steps on the Domains page. On the free plan every app gets a subdomain under your address, like blog.lena.blitz.cloud, and you can add your own DNS records under that address.

Can I change my address?

Yes, once every 14 days. Your apps move to the new name, and for 14 days the old name sends visitors on to the new one. See addresses and HTTPS.

Data and privacy

Where is my data stored?

In a data centre in the European Union. Today that is one region, and more regions in Europe are planned. Database backups are stored separately, also in the EU. See data and GDPR.

Is blitz.cloud GDPR compliant?

blitz.cloud is operated by a German company, keeps your apps and data in the EU and uses no US cloud provider for hosting. Requests to blitz.cloud addresses pass through Cloudflare, emails are sent through Google Workspace, and some build steps use Anthropic's Claude; what each of them sees is listed under data and GDPR. The data processing agreement is a PDF you can download once you are signed in.

Can hosted apps run as root or access the server?

An app may run as root inside its own gVisor sandbox if its image asks for that, but it never gets access to the server. gVisor stands between the app and the server's kernel, privileged containers are refused, and network rules between accounts block everything by default.

How do I delete my account?

In Settings, under Delete account. The page lists what goes before you confirm. If you have Pro, it ends with the account and you aren't charged again.

How do I move my apps away from blitz.cloud?

Your code stays on GitHub and your images on their registry. "Download my data" in Settings gives you one file with your apps, their settings, databases, domains and history. The contents of your databases and your apps' files aren't in it yet, so write to hallo@blitzworks.io and we help you get them out.