App name: Regex Playground
One-liner: A shared editor to create and debug regular expressions
Why: As a lazy developer, I delegate the creation of Regex to LLMs. And when it inevitably fails, I debug it in playgrounds like regex101 or RegExr because the UI is nice. Naturally I had to micro-optimize this 2-step dance by having a Regex editor in ChatGPT directly.
Key features It acts as a collaborative REPL, meaning the regular expression will be matched against the test string at each keystroke, with resulting matches added to the conversation context. When ChatGPT makes an edit that is not valid, it is automatically re-triggered to fix it.
Stack and tools
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Started from the alpic-ai/apps-sdk-template, powered by the Skybridge ChatGPT apps framework
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Hosted on alpic.ai
Link(s)
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Try it for yourself:
regex.alpic.live -
All the other apps from the calendar:
alpic.notion.site/advent-calendar-apps
With ChatGPT, you can now have a fluid conversation about capitals while the UI stays perfectly in sync. Ask about Paris, then naturally follow up with “what’s the currency there?” or “show me a nearby capital” – the map, photos, and details update as you explore, just like having a knowledgeable travel companion with a navigation map as your wheel to drive around the world!
Interactive map with all world capitals
Beautiful photos
Detailed info: population, currencies, Wikipedia summaries
Widget-to-Model context sync – UI and conversation always stay aligned
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. Anyone who plans meals, does the shopping, and keeps their family fed. Our core audience are meal-planning, complex dietary restrictive, or tech-forward families. This app provides the persistent memory layer for every step of the grocery planning process, leading to better personalized meal plans, recipes. shopping lists and a smooth hand-off to grocery fulfillment apps like Instacart or Target.
Smart pantry database with auto-categorization and expiration estimate alerts. Take pictures of store receipts or groceries to quickly add items to your pantry.
Save your collection of recipes by via URL import, photos of a cookbook page, or from a really good ChatGPT recommendation. Enter Cook Mode or see what ingredients are missing at a glance.
Set up family dietary profiles (Diets, Goals, Exclusions, Likes, Dislikes, Notes) that are called on and applied automatically.
Plan meals for the week in one conversation. View your plan and meal instructions instantly.
Generate shopping lists from missing items based on meal plan. Auto-sorted by food category, with flexibility to reorder the list as you wish. Customizable, user-directed, multi-store lists.
Data Insights to track price history, brand frequency, recipe favorites, and more.
