> For the complete documentation index, see [llms.txt](https://docs.spydra.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spydra.app/products-overview/private-network/apps/custom-apps.md).

# Custom Apps

Custom Apps/Chaincodes are programmable code that define the business logic and rules governing the interactions and transactions within a blockchain network. They are written in programming languages such as Go, JavaScript, or Java, and are deployed onto the network. 

Custom chaincodes enable participants in the network to define and execute complex transactions, update the shared ledger, and enforce business rules specific to their domain or use case. They provide the flexibility to tailor the behavior of the blockchain network to suit the specific requirements of the application being developed or deployed on the Network.

The chaincode is used to perform actions like creating, updating, or deleting data on the blockchain. It is recommended to carefully design and test chaincode to ensure that it functions correctly and meets the needs of the network.

## Spydra's Custom Apps

Spydra allows users to deploy their own Custom chaincode/App to meet their Business requirements. 

Learn more about deploying Custom Chaincode

{% content-ref url="/pages/1wtoh1kKvvsKxGf5vRq3" %}
[Deploy Custom Chaincode](/how-to/private-network/custom-apps/deploy-custom-chaincode.md)
{% endcontent-ref %}


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