DocumentationDevice AppGetting started

Getting started

In this section of the Developer Portal, you will find the resources to build, test and submit C device apps, Rust device apps, Ethereum plugins and Cloned coins apps.

Things to know before starting

Contact us

We recommend you get in touch with us before starting your development process.

This will ensure you do not lose time and get on the right track.

Security audit

Before publication, an application must go through a functional and security audit. This security audit is made by one of our parterns at your expense.

When your device app is ready to go through the security audit, you can contact one of our partners:

They both follow Ledger specifications and will provide a full report with potential vulnerabilites.

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Ensure your device app meets all necessary requirements and is fully tested before initiating a security audit with our partners

Important aspects of your agreement:

  • Time: When the auditors will be able to start the review.
  • Cost: The external audit will be entirely at your expense.
  • Maintenance: You must include a clause for updates or sign a new contract for any major update. If you don’t, your app will not be updated by Ledger and might be delisted from My Ledger apps store if it is breaking.
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Ledger is not a stakeholder in the contract between you and our partners.

Need to hire a team to develop your device app?

You need an device app but don’t have an application developer in your team?

The following companies have experience building Device Apps, feel free to contact them to talk about your project:

Tools and boilerplates

Technical information

Languages

ComponentDeveloping language
Ledger OSC
ApplicationsC or Rust
PluginsC
Tools (including tests)Python (mostely)

The available SDK is for Apps written in C

For the Apps written in Rust, a Rust SDK is available (only for Nano S/S+/X devices, Stax not supported yet).

Data formats

ComponentFormat
CI (GitHub Workflows)YAML
ledger_app.toml manifestsTOML
App databaseJSON
Ledger
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