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

# Overview

> In-app notification records triggered by user interactions and system events

App Notifications are persistent, database-backed records delivered to users when activity happens in your app — new comments, replies, mentions, reactions, follows, connection requests, and more. They are distinct from push notifications; they live in the Replyke database and are surfaced through the SDK.

## How It Works

Replyke automatically creates notification records when relevant events occur (e.g., someone comments on an entity, someone follows a user). Your app polls or fetches those records and displays them in a notification feed. When push delivery is also needed, a webhook fires at the same time so your backend can forward the event to FCM or APNs.

## In This Section

<CardGroup cols={2}>
  <Card title="Hook" href="/sdk/app-notifications/hook">
    How to use `useAppNotifications` — fetch notifications, unread count, and mark as read
  </Card>

  <Card title="Notification Templates" href="/sdk/app-notifications/notification-templates">
    Customize the display text for each notification type
  </Card>

  <Card title="Webhook Integration" href="/sdk/app-notifications/webhook-integration">
    Forward notifications to push services via webhook
  </Card>
</CardGroup>

## Hooks

<CardGroup cols={1}>
  <Card title="useAppNotifications" href="/hooks/app-notifications/use-app-notifications">
    Full API reference for `useAppNotifications`
  </Card>
</CardGroup>

## Notification Types

Replyke generates notifications for the following events:

| Type                                  | Trigger                                                       |
| ------------------------------------- | ------------------------------------------------------------- |
| `entity-comment`                      | Someone comments on your entity                               |
| `comment-reply`                       | Someone replies to your comment                               |
| `entity-mention`                      | You are mentioned in an entity                                |
| `comment-mention`                     | You are mentioned in a comment                                |
| `entity-upvote`                       | Someone upvotes your entity                                   |
| `comment-upvote`                      | Someone upvotes your comment                                  |
| `entity-reaction`                     | Someone reacts to your entity                                 |
| `comment-reaction`                    | Someone reacts to your comment                                |
| `entity-reaction-milestone-specific`  | Your entity reaches a milestone for a specific reaction type  |
| `entity-reaction-milestone-total`     | Your entity reaches a total reaction milestone                |
| `comment-reaction-milestone-specific` | Your comment reaches a milestone for a specific reaction type |
| `comment-reaction-milestone-total`    | Your comment reaches a total reaction milestone               |
| `new-follow`                          | Someone follows you                                           |
| `connection-request`                  | Someone sends you a connection request                        |
| `connection-accepted`                 | Someone accepts your connection request                       |
| `space-membership-approved`           | A moderator approves your pending space membership request    |
| `system`                              | A custom message sent from the dashboard                      |