Terms of service

Who you’re dealing with

These terms are between you and Atelvar (“we”, “us”). Our email is [email protected]. The legal entity behind Atelvar has not yet been finalised; we will update this page when it is. We do not publish a postal address on this website. By installing or using Atelvar Marge (“Marge”) you agree to these terms and to our privacy policy. By using this website or the free calculator, you also agree to the parts of these terms that apply to them.

What Marge does

Marge is a Shopify app that works out what your products cost and what you keep on each sale after Shopify fees and postage. It works for things you make, things you buy in, or a mix of both. It reads your products, orders and stock from Shopify and combines them with the costs you type in. It can’t change anything in your store.

Using it

• You need a Shopify store and permission to install apps on it.
• You’re using Marge for your business, not as a private consumer.
• Use it for your own shop and don’t try to break it, copy it, or get at other shops’ data.

The numbers

Marge calculates in integer cents, with one documented rounding rule, and we test that maths against hand worked examples. Those figures are only as good as the costs you enter and the data Shopify sends. Some figures are estimates, for example a card fee Shopify doesn’t report, and Marge says so when that’s the case. Marge is a tool to help you decide. It isn’t accounting, tax, financial or legal advice, and you’re responsible for your own prices, tax and business decisions. The same caveats apply to the free calculator on this website, which uses only the numbers you type and does not connect to Shopify.

Trial, plans and billing

• When Marge launches, it will have a 14 day free trial. There’s no free plan after it.
• The plans and prices will be the ones shown on Marge’s Shopify App Store listing, once that listing is published, and on Shopify’s plan page when you pick a plan. You can pay monthly or yearly.
• Shopify bills you for Marge as part of your Shopify bill, in line with Shopify’s own terms. We never take payment directly.
• You can change plans or cancel at any time from Settings in Marge, or by uninstalling it. Shopify handles any proration.
• We don’t normally refund part of a month or year. If something went wrong on our side, email [email protected] and we’ll put it right, including a credit through Shopify where that’s fair.
• If we change prices we’ll tell you at least 30 days before it affects you.

Your data

Your shop’s data stays yours. We only use it to run Marge for you, as set out in the privacy policy. When you uninstall, it’s deleted as that policy describes.

Keeping it running

We aim to keep Marge available and working, but we can’t promise it will never be down or never have a bug. We may improve or change features over time. If we ever have to close Marge, we’ll give you at least 30 days’ notice where we can, so you can note down what you need.

Our liability

As far as the law allows, we aren’t liable for indirect losses such as lost profits or lost sales, or for decisions you make using Marge’s figures. Our total liability to you is limited to the fees you paid for Marge in the three months before the claim. Nothing in these terms excludes or limits liability that the law does not allow us to exclude, including for fraud or for death or personal injury caused by our negligence.

Using Marge in trade

You are using Marge in trade, for your business, not as a private consumer, and we supply it in trade. These terms are in writing. You agree that the guarantees in the Consumer Guarantees Act 1993 will not apply to your use of Marge, and you agree it is fair and reasonable that we are both bound by that. If a court later decided that this clause could not apply, the rest of these terms would still apply.

Ending

You can stop at any time by uninstalling Marge. We may suspend or end your access if you misuse it, if fees aren’t paid through Shopify, or if the law or Shopify requires it. Where we can, we’ll tell you first.

This website and the calculator

This website and the free calculator are provided as they are, to help you learn about Atelvar and try a simple cost estimate in your browser. We aim to keep them working, but we can’t promise they will always be available or error free.

Changes to these terms

If we change these terms we’ll update this page and its date. If the change matters, we’ll tell you inside Marge before it applies, once Marge is available.

Law

New Zealand law applies to these terms, and the New Zealand courts can hear any dispute.

Contact

Atelvar
[email protected]

Last updated 11 November 2026 (Pacific/Auckland).