Terms of sale and license
The terms for buying and using OneKnob Saturator and PlugSpot.
What these terms cover
These terms apply to OneKnob Saturator and PlugSpot, sold by ML Music Studio through this site.
The PocketDesk app is provided through the App Store, so the sale and refund sections of these terms do not apply to it.
Sale and payment
You buy on the checkout page of Polar, our payment provider, which acts as merchant of record and handles payment, tax and invoices.
ML Music Studio is responsible for the products, the licenses and product support.
The price is $49 (₩69,000 in Korea, tax included), paid once. There is no subscription and no automatic billing.
Both licenses are perpetual. OneKnob Saturator includes every update. PlugSpot includes one year of updates; after that, renewing updates is optional at $19 a year (₩29,000 in Korea, tax included). Nothing renews automatically, and PlugSpot keeps working if you do not renew.
License
- One key works on 2 devices.
- The license is personal: it is for the person who bought it, on their own devices.
- You may not share or resell a key, or copy and distribute the product.
- You need an internet connection the first time you enter a key.
- To change devices, free up a place with the "Deactivate this device" button in the product. If you have lost the old device, contact us using the details below.
Trial
Both products offer a full 14-day trial with no account. The OKS trial starts when you choose the demo; the PlugSpot trial starts the first time you insert, apply a chain, edit or run a cleanup.
After the trial, OKS still processes sound, but it drops out for 1 second every 30 seconds; a key removes the dropouts. PlugSpot needs a key for inserting, chains, editing and cleanup. PlugSpot search, undo and removing what you inserted keep working.
Refunds
You can ask for a refund within 14 days of purchase. See the refund policy for details.
When this changes
If these terms change, we will update this page.
Last updated: 2026-11-10
Contact
For questions about these terms, please write to us on KakaoTalk or by email. Business details are at the bottom of this page.