Prompt 21

Prompt Lab helps you find the right AI prompt fast—and reuse it without digging through Notes, screenshots, or old chats. Save prompts, templates, blocks, workflows, images, and videos in one local library. Tag everything, search instantly, and copy to your AI tool in one tap. No account required. No cloud sync of your library. No AI APIs—just a fast personal prompt workspace. FIND PROMPTS FAST • Search across titles, tags, prompts, and notes on Prompts and Projects • Tags on every card — organize by style, subject, client, or campaign • Collections — group related cards for quick access • Continue, Recently Opened & Most Used — jump back to what you use often • Explore — browse recommended prompts and save them locally • Filter by type — prompts, templates, blocks, workflows, images, and videos SAVE ONCE, REUSE FOREVER • Prompts — copy-as-is text for any AI tool • Templates — {{variables}} you fill in each time • Blocks — mix style + subject + quality in Prompt Builder • Workflows — multi-step sequences with prompts, templates, media, and links • Images & Videos — outputs and references with thumbnails BUILT FOR SPEED • One-tap copy to clipboard • Import from clipboard — save AI replies as cards instantly • Visual card grid — scan prompts and media at a glance • Version history — fork without losing the original • Share via link — send prompt details or import from a shared link • Backup, export & import — move your library between devices PRIVACY BY DESIGN Your library stays on your iPhone. No cloud sync, no tracking, no AI generation. Clipboard access only when you import. Optional anonymous sign-in is used only to browse public prompts in Explore. For AI creators, designers, and prompt engineers who want their best prompts findable in seconds—not buried in folders. Prompt Lab does not generate AI content. Use it with your favorite AI tools.