Many Worlds Labs / Support
Support
How can we help?
Real people, one inbox. Whatever the app, whatever the question, you can reach us directly — we usually reply within a couple of days.
Contact us
Use our contact form to send a question, a bug report, or a feature idea. It helps to include the app name, your device and OS version, and a screenshot if something looks wrong.
Our apps
Using your own Anthropic (Claude) API key
Several of our apps — including Stelliber and Pickleball Brain: AI Trainer, with more on the way — can power their AI features with your own Anthropic API key (some also offer on-device AI with Apple Intelligence). If you'd like to use your own key, here's how to create one:
- Sign in to the Anthropic Console. Go to console.anthropic.com and create an account or log in. (This is a developer account, separate from any Claude.ai subscription — a Claude Pro/Max plan does not include API access.)
- Add billing. API usage is pay-as-you-go, so you'll need to add a payment method or buy prepaid credits before a key will work — open Billing (sometimes under Plans & Billing) and follow the prompts. There's no free API tier; Anthropic bills you only for what you use, which for a typical request is a fraction of a cent.
- Create the key. Go to Settings → API Keys → Create Key, give it a name (e.g. the app you'll use it with), and copy it. The key begins with
sk-ant-and is shown only once — store it somewhere safe (a password manager is ideal). - Paste it into the app. Open the app's Settings → AI and paste your key. One key works across all of our apps, or you can create a separate key for each.
Common questions
Where is my data stored?
On your device, and synced through your own private iCloud where the app supports it. We don't run servers that hold your data and we can't see it. See each app's privacy policy above for specifics.
How do I export or delete my data?
Each app lets you delete your content from within it, and several offer backup/export. Deleting an app removes its on-device data; to remove synced copies, delete the app's data from your iCloud settings.
How do I request a refund?
Purchases are handled by Apple. Request refunds through Apple at reportaproblem.apple.com.
Still stuck?
Just send us a message — we read every one.