> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rafftechnologies.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Raff Apps features and limits

> App types, sources, sizes, deploy timeouts, ports, domains, previews, logs and every limit of Raff Apps in one place.

<sub>Updated October 19, 2026</sub>

The facts about Raff Apps in one place.

## App types

| Type | Address | Scaling | Custom domains | Previews |
| - | - | - | - | - |
| Web | `https://<name>-<account id>.onraff.com` | Fixed, autoscaling, scale to zero | Yes | Yes, from GitHub |
| Private | `<name>.<namespace>.svc.cluster.local` | Fixed; autoscaling with scale to zero | No | No |
| Worker | None | Fixed | No | No |
| Cron | None | None. **Concurrency** decides if runs overlap | No | No |
| Job | None | None. One run per **Run now** | No | No |

See [App types](/products/build/raff-apps/concepts/app-types).

## Sources

| Source | What Raff does |
| - | - |
| GitHub | Builds the repository's Dockerfile, or detects the stack (Node.js, Python, Go, Ruby, PHP, Java and more) and builds it. Every push to the branch deploys. |
| Docker image | Pulls a public image and runs it. Nothing is built. |
| Template | Runs one of 16 ready apps. See [Raff Apps templates](/products/build/raff-apps/details/templates). |
| Docker Compose | Proposes one app per service in a pasted compose file. |

## Sizes

| Size | vCPU | Memory | Temporary disk | Previews per app |
| - | - | - | - | - |
| Micro | 0.25 | 512 MB | 2 GB | 2 |
| Starter | 0.5 | 1 GB | 5 GB | 3 |
| Standard | 1 | 2 GB | 10 GB | 5 |
| Pro | 2 | 4 GB | 20 GB | 8 |
| Pro Max | 4 | 8 GB | 40 GB | 10 |
| Scale | 8 | 16 GB | 80 GB | 10 |

## Limits

| Item | Limit | Notes |
| - | - | - |
| Region | US East | |
| Instances per app | 6 | Fixed instances or the autoscaling maximum. Contact support to raise. |
| Instances per account | 20 | Web, private and worker apps. Paused, failed and not yet deployed apps count too. Contact support to raise. |
| App name in the address | 50 characters | A short suffix is added when the name is taken in your account |
| Default port | 8080 | Web apps get the port in `PORT` |
| Reserved ports | 8008, 8012, 8013, 8022, 9090, 9091 | Web apps and private apps that scale to zero |
| Build time | 15 minutes | |
| Repository size | 100 MB | GitHub |
| Time to turn ready | 5 minutes, or 10 minutes with a health check | Per deploy |
| Request duration | 5 minutes | Web apps |
| Sleep after | About 15 minutes without requests | Apps with scale to zero |
| Outbound TCP port 25 | Blocked | Use port 587 or 465, or an HTTP API |
| Environment variable names | 253 characters | Letters, digits and underscores, not starting with a digit |
| Database link prefix | 64 characters | |
| Custom domains | Web apps | Error after 24 hours without working DNS |
| DNS checks | Every 30 seconds | **Check now**: 5 times in 10 minutes |
| Previews | Per size, table above | Web apps from GitHub. A preview runs on Micro and is removed 7 days after its last push. Forks are skipped. |
| Free database | 1 per account | Pauses after 7 days without connections |
| Saved shell commands | 50 per app | |

## History kept

| Item | Kept |
| - | - |
| Runtime logs | 14 days |
| Metrics | Views of the last 1 hour, 6 hours, 24 hours or 7 days |
| Activity timeline | 30 days |
| Cron and job runs | 30 days |

## Template minimum sizes

| Template | Smallest size |
| - | - |
| Metabase | Standard (1 vCPU · 2 GB) |
| LibreTranslate | Standard (1 vCPU · 2 GB) |
| Stirling-PDF | Starter (0.5 vCPU · 1 GB) |
| Every other template | Micro (0.25 vCPU · 512 MB) |

## Included with every app

* Automatic HTTPS for the onraff.com address and custom domains.
* Build logs, runtime logs, metrics (CPU, memory, instances, and requests for web apps), a shell inside running instances and an activity timeline.
* Deploy history with rollback to any deploy that went live.
* Encrypted environment variables.
* A spend cap, on by default at \$50 a month.

## See also

<CardGroup cols={2}>
  <Card title="Pricing" icon="circle-dollar" href="/products/build/raff-apps/details/pricing">
    Sizes, databases and the spend cap.
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/apps/list-app-services">
    Endpoints for Raff Apps.
  </Card>
</CardGroup>


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