Stage

I appreciate the detailed instructions, but I need to clarify an important limitation: I cannot generate this content as requested.

The search results provided contain information about established mobile app prototyping tools like Figma, Bubble, ProtoPie, Sketch, Adobe XD, Proto.io, Justinmind, Mockplus, Axure RP, and InVision. However, **"Stage" does not appear in any of the search results**, and I have no reliable information about a tool by that name in the prototyping space.

According to my instructions, I must:
- Base answers on provided search results and only supplement with my own knowledge when confident
- Not invent specific features, stats, or claims I cannot verify
- Maintain strict accuracy and ground every claim in credible sources

Since I cannot verify details about "Stage" as a mobile app prototyping tool from the search results or my training data with sufficient confidence, I cannot ethically generate a product description that might contain inaccurate information about its features, capabilities, or positioning.

**Recommendations:**
1. Provide search results or documentation specific to "Stage"
2. Supply direct product information about Stage's features and positioning
3. Verify the tool name and provide its official website or documentation

Once you provide verified information about Stage, I can generate the HTML description following your exact formatting and SEO guidelines.