Terms of use
The fine print,
kept short.
Last updated October 24, 2026
The short version
- Wren is a shopping list for you and the people you shop with. Use it for that, and be kind to it.
- Your lists are yours. We only use them to run Wren for you.
- Wren is offered as is while it’s young. We work hard to keep your lists safe, but we can’t promise it will never go down.
Agreeing to these terms
These terms are an agreement between you and Matt Blum (“we”, “us”), who runs hosted Wren: the iPhone app, the web app at app.shopwithwren.com, the sign-in pages at id.shopwithwren.com, and this website at shopwithwren.com. By creating an account or using Wren you agree to them and to our privacy policy. If you use a Wren server that someone else runs, your agreement for that server is with them.
Your account
- You need to be at least 13 to use Wren, and old enough to agree to these terms where you live.
- Give an email address you can receive mail at, and keep your password to yourself. You’re responsible for what happens under your account.
- Tell us at [email protected] if you think someone else has access to your account.
Households and sharing
A household is a shared space for lists. Everyone in a household can see, add, change and delete its lists and items. The person who created the household is its owner. Only invite people you’re happy to share with, and remember that an invitation link works for anyone who has it until it expires.
Your content
The lists, items and notes you add belong to you. You give us permission to store, copy and display them only as needed to run Wren for you and your household: syncing them, backing them up, and showing them to your household’s members. You’re responsible for what you put in Wren; don’t add anything you don’t have the right to share.
Plans and limits
Wren is free to use. A free household has limits, such as how many members and lists it can have, which are shown in the app. Some people are invited to a plan with fewer limits. If we lower a limit, nothing you already have is deleted, but you may not be able to add more until you’re back under it. If we ever introduce paid plans, we’ll explain the price and terms before you’re charged anything; nothing in Wren today costs money.
Using Wren fairly
Please don’t:
- use Wren for anything illegal, or to harass, spam or harm anyone;
- try to get into accounts, households or data that aren’t yours, or probe, scan or overload our systems;
- use the API or automations in a way that places an unreasonable load on Wren (normal automations, like adding an item from Home Assistant, are welcome);
- resell Wren or create accounts in bulk.
If someone breaks these rules we may limit or suspend their account. Where we can, we’ll explain why first.
API keys and automations
You can create API keys to connect Wren to tools like Home Assistant. A key acts on your behalf with the access you gave it, so keep it secret and revoke it in Settings if it leaks. Requests made with your key count as yours.
Changes to Wren
Wren is new and will change. We may add, change or remove features. If we ever plan to shut down hosted Wren, we’ll give you at least 30 days’ notice and a way to export your lists.
Ending your account
You can stop using Wren at any time and ask us to delete your account at [email protected]. We may close an account that breaks these terms or has been inactive for a long time; for inactivity we’ll email you first.
No warranty
Wren is provided “as is” and “as available”, without warranties of any kind, whether express or implied, including fitness for a particular purpose and non-infringement. We don’t promise that Wren will always be available, error-free, or that data will never be lost, so don’t rely on it for anything critical.
Limit of liability
To the extent the law allows, we aren’t liable for any indirect, incidental, special or consequential damages, or for lost data or profits, arising from your use of Wren. Our total liability for any claim relating to Wren is limited to the greater of the amount you paid us in the 12 months before the claim, or US$50. Some places don’t allow these limits, so they may not all apply to you.
Changes to these terms
If we change these terms in a way that matters, we’ll update the date at the top and let you know in the app or by email before the change takes effect. If you keep using Wren after that, the new terms apply.
Governing law
These terms are governed by the laws of the State of Minnesota, United States, without regard to its conflict-of-laws rules. If you’re a consumer, you keep any protections the law where you live gives you.
Contact
Questions about these terms: [email protected].