---
title: "User Matching"
slug: "mapp-intelligence-ios-sdk-v5-user-matching"
updated: 2026-04-30T12:03:51Z
published: 2026-04-30T12:03:51Z
canonical: "docs.mapp.com/mapp-intelligence-ios-sdk-v5-user-matching"
---

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

# User Matching

User matching links users between the Mapp Engage and Mapp Intelligence SDKs. When enabled, the Mapp Engage `dmcUserID` is shared with Mapp Intelligence, so a user is recognized in both products. This unlocks more precise targeting via mobile push or in-app messages.

Before you start, complete the [Quickstart](/v1/docs/mapp-intelligence-ios-sdk-v5-quickstart) so the SDK is initialized.

---

## Technical requirements

- Mapp Intelligence iOS SDK 5.0.4 or later
- Mapp Engage SDK 5, 6, or later
- Anonymous tracking is **not** active

> [!WARNING]
> **Note:** User matching does not work while [Anonymous Tracking](/v1/docs/mapp-intelligence-ios-sdk-v5-anonymous-tracking) is enabled. The two are mutually exclusive.

---

## Property

| Property | Description | Default |
| --- | --- | --- |
| `enableUserMatching` (BOOL) | When `true`, the SDK shares the Engage `dmcUserID` with Mapp Intelligence so that the user is known in both products. | `false` |

---

## Example

**Swift**

**Enable user matching:**

```swift
MappIntelligence.shared()?.enableUserMatching = true
```

**Disable user matching:**

```swift
MappIntelligence.shared()?.enableUserMatching = false
```

**Objective-C**

**Enable user matching:**

```objectivec
[[MappIntelligence shared] setEnableUserMatching:YES];
```

**Disable user matching:**

```objectivec
[[MappIntelligence shared] setEnableUserMatching:NO];
```

---

## Related

- [Quickstart](/v1/docs/mapp-intelligence-ios-sdk-v5-quickstart)
- [Anonymous Tracking](/v1/docs/mapp-intelligence-ios-sdk-v5-anonymous-tracking)
- [Get the User Ever ID](/v1/docs/mapp-intelligence-ios-sdk-v5-get-user-ever-id)