Terms of use

Last updated 29 September 2026.

The software

SparKo is a Windows application for organizing and sending guitar amp tones to Positive Grid Spark amps. The free edition may be used without charge. SparKo Pro is a paid license that unlocks additional features described on the product page.

License

A SparKo Pro license permits one person to activate the software on up to three computers they own or control. The license is personal and may not be shared, resold or published. We may revoke keys that are shared publicly or obtained fraudulently.

The purchase includes updates for 12 months. Versions released during that period remain usable indefinitely. Later major versions may require an upgrade purchase.

Purchases

Orders are processed by Paddle.com Market Ltd, who is the merchant of record for all orders, handles payment, taxes and customer service related to billing. Paddle's terms apply to the purchase itself.

Compatibility

SparKo communicates with Spark amps over Bluetooth using a community-documented protocol. Positive Grid may change their amps or apps at any time. Amp support is provided on a best-effort basis and we will make reasonable efforts to keep it working, but cannot guarantee compatibility with future firmware.

AI features

AI tone generation uses accounts and API keys you supply for third-party services. Your use of those services is governed by their terms and billed to you by them. SparKo does not proxy, store or resell those services.

No warranty

The software is provided "as is" without warranty of any kind. To the extent permitted by law, we are not liable for any loss arising from its use. Your statutory rights are not affected.

Trademarks

SparKo is an independent product and is not affiliated with, endorsed by, or sponsored by Positive Grid. Spark is a trademark of Positive Grid.