Lumen Engine FAQ - Frequently Asked Questions

The Lumen Engine is a digital studio that designs AI Mini‑Apps—small, focused, text‑based tools built for fast, frictionless interaction inside any AI chat app. Each Mini‑App blends structured logic, creative design, and replayable experiences to make AI feel clear, fun, and easy to use. 

A Mini‑App is a compact, copy‑and‑paste prompt that runs inside your AI chat model. It behaves like a tiny interactive tool—games, generators, learning experiences, or creative utilities—without requiring downloads, logins, or subscriptions. 

After purchase, you copy the supplied prompt into your AI chat app. The Mini‑App activates instantly with built‑in instructions, logic, and a guided user experience. There’s nothing to install and nothing to configure. 

No. Mini‑Apps are one‑time digital downloads. There are no subscriptions, no ads, no in‑app purchases, and no hidden fees. 

Yes. Mini‑Apps are designed to work with any modern AI chat model. If your AI app supports text input, your Mini‑App will run. 

Etsy delivers all digital files instantly. After purchase, Etsy emails you a link titled “Your order is ready for download.” If you checked out as a guest, please check your Spam/Junk folder. 

Etsy handles all digital delivery. You can access your files anytime through your Etsy receipt email or by contacting Etsy Support directly. 

 No. All digital downloads are delivered only through Etsy for security and order verification. 

Because Mini‑Apps are instant digital downloads, refunds are generally not available. If you experience an issue, reach out and we’ll help troubleshoot. 

Yes. You can submit a request through the Request Mini‑App page. Custom builds are accepted based on complexity and availability. 

Yes. Mini‑Apps are text‑based and run entirely inside your AI chat app. They do not access your device, files, or personal data.