hYYa ai

Two engines. One app. Offline or online — you're in control.

Most AI apps make you choose between privacy and power. hYYa ai gives you both, and you pick which engine answers every message.

hYYa VAULT — THE OFFLINE ENGINE
The AI runs on your device. No account, no cloud, no internet. Your documents and conversations never leave it.

• Chat — a local model at full speed, completely offline. Download a model once and it stays on your device; nothing downloads until you choose.
• DataLens — add PDFs, Word files, spreadsheets, presentations or scans and ask questions about them. Answers cite the passage they came from, and scanned pages are read on-device.
• Studio — turn those documents into real deliverables: Excel workbooks with live formulas, Word reports with a cover page and contents, PowerPoint decks with editable charts, and self-contained interactive dashboards.
• Quantity Surveyor — take off construction drawings straight to Excel. A layered CAD file (AutoCAD DXF) gives a per-service take-off, each service on its own layer, with lengths, areas and counts. A PDF drawing gives whole-drawing totals, measured from the drawing's real geometry at the scale you set. Multi-sheet sets are measured sheet by sheet, and anything that can't be measured is named rather than dropped.
• File generation — turn any answer into a Word, Excel, PowerPoint or dashboard file, saved wherever you choose.
• Smart memory, searchable chat history, and your own tool servers — you approve each use.

hYYa CLOUD — THE ONLINE ENGINE
Switch engines when you want the frontier. Requires a paid hYYa Cloud account — pay per use with On-Demand credits, or subscribe monthly to Cloud Ultra.

• Frontier models and live web research
• Connections — Gmail, Calendar, Outlook, Notion, Asana
• Agents and DataLens Studio
• Team collaboration
• Use your own AI provider keys

PRIVATE BY DEFAULT
No tracking. No analytics. In Vault mode nothing you type, store or open leaves your device. The online extras — web search, connections, your own API keys — each stay off until you turn them on, and each tells you what it sends before it sends anything.

Privacy Policy: https://hyya.ai/privacy