Terms of service

Effective 2026-09-12.

The short version: Mimir the app is free forever, on one device, with nothing held back. Cloud Sync is the one thing I sell — a single payment, no subscription. You own everything you write. If you’re in the EU or EEA, you can cancel a Cloud Sync purchase within 14 days for any reason, no exceptions asked. The rest of this page fills in the detail.

These terms are between you and Geffrey van der Bos, based in the Netherlands, trading as Mimir. Using Mimir means you accept them.

The app

Mimir is free, on one device, with its full feature set — nothing is gated behind a trial or a paywall on the device you install it on first. Everything you write is yours. I claim no rights to your notes beyond what it takes to do what you ask: syncing them if you turn on Cloud Sync, or publishing a page if you choose to.

Mimir is provided as it is. I don’t promise it’s fit for a particular purpose, or that it’ll never lose data, though it’s built as if that promise mattered.

Cloud Sync

Cloud Sync is the only thing Mimir charges for: syncing your notes across more than one device. It’s a single payment, not a subscription, and there’s no free trial to convert from. Buying it licenses you to use Cloud Sync with this version of Mimir — a future major version would be a separate product, sold separately, the way Mimir 1 would never force a repurchase of itself.

Cloud Sync licenses are sold for the Mac app only. The iOS and iPadOS apps never mention price or purchase — an iPhone or iPad can only join a vault that was already set up on a Mac.

Payment

Cloud Sync is sold through Polar, who is the seller of record for that purchase and handles billing, invoicing, and payment disputes. You’re buying from Polar under Polar’s own terms, and I license you Cloud Sync in turn. Everything about the product itself — support, refund requests within the window below, and license recovery — is handled directly, by me.

Your right to cancel

If you’re a consumer in the EU or EEA, the law gives you 14 days from your purchase to cancel it, without giving a reason. I don’t ask you to give up that right in exchange for earlier access to Cloud Sync. To use it, email support@justmimir.com with your license key within 14 days of buying it, and you’ll be refunded. This is in addition to whatever Polar’s own refund process offers, not instead of it.

Outside that window, refunds are considered case by case rather than guaranteed, and none is promised.

Acceptable use

You won’t try to decrypt or access a vault the eight words weren’t given to you for. You won’t try to defeat the Cloud Sync license check, resell a license, or share one outside your own devices. You won’t publish content through Mimir that you don’t have the right to share, or that’s illegal where you or the people reading it are. You won’t use the relay for anything other than syncing your own notes — it isn’t a public API or a general-purpose message service.

Publishing a page

Publishing a page puts its content at a public link on the open internet, described further in the manual. You’re responsible for what you publish. A published page can be taken down without notice if it’s clearly abusive — malware, illegal content — and otherwise on a report sent to abuse@justmimir.com.

Ending this

You can stop using Mimir any time — deleting the app and its local database ends it completely. A Cloud Sync license can be revoked, and the vault it’s tied to on the relay deleted, if it’s used to abuse the relay or break these terms. Notes already downloaded to a device stay on that device regardless.

Changes to these terms

This page carries the date it last changed at the top. A change won’t take away something you already paid for.

Liability

To the extent the law allows it, I’m not liable for indirect or incidental damages arising from using Mimir, and my total liability for anything related to Cloud Sync is capped at what you paid for it. Nothing here limits a consumer-protection right the law doesn’t let me waive.

Governing law

These terms are governed by the law of the Netherlands. If you’re a consumer living elsewhere, the mandatory consumer-protection law of your own country still applies alongside this and isn’t overridden by it. Disputes not resolved directly go to the competent court in the Netherlands, unless the law says otherwise.

Contact

geffrey@justmimir.com — general questions. support@justmimir.com — refunds, licenses, account requests. abuse@justmimir.com — a published page that shouldn’t be public.