---
title: "Program rule engine"
description: "androidsdkprogramruleengine}"
url: https://developers.dhis2.org/docs/mobile/android-sdk/program-rule-engine
source: https://github.com/dhis2/developer-portal/edit/main/docs/mobile/android-sdk/program-rule-engine.md
---

# Program rule engine {#android_sdk_program_rule_engine}

The program rule engine is not provided within the SDK. It is implemented in a separate library, so the same code is used by backend and android apps.

:::info

The DHIS2 Android SDK and the Program Rule Engine use a common library to parse the DHIS2 expressions, the [DHIS2 Antlr Expression Parser](https://github.com/dhis2/dhis2-antlr-expression-parser). If the application imports both the the SDK and the Rule Engine, it is important that their parser versions match exactly; otherwise it could cause an unexpected behavior in the evaluation.
Check compatibility table [here](https://developers.dhis2.org/docs/mobile/android-sdk/compatibility.md).
:::

More info [dhis2-rule-engine](https://github.com/dhis2/dhis2-rule-engine).