hYYa ai - 2026 Pricing, Features, Reviews & Alternatives

hYYa ai is a dual-engine AI productivity application available on Mac (Apple silicon), iPhone, iPad, Android, and via browser at hyya.ai, with both engines delivered in a single free download. The app combines hYYa Vault, a fully on-device AI engine that runs downloaded language models entirely on local hardware with no server connection by default, and hYYa Cloud, which connects to frontier models including Claude Opus, Claude Fable, Grok, and Gemini for tasks requiring greater scale or live web research. Users can switch between engines mid-conversation, question by question, without leaving the app. Target industries include construction, legal and contract review, and general professional knowledge work.

hYYa ai ships a full toolkit accessible on both engines: DataLens for question-and-answer over PDFs, Word, Excel, PowerPoint, and scanned documents with passage-level citations (library-scale on paid Cloud plans); Studio for generating branded Word reports, Excel workbooks with working formulas, editable PowerPoint files with charts, and interactive publishable dashboards; Quantity Surveyor for automated construction drawing take-off from DXF and vector PDF files (binary .dwg supported on Cloud); and Digitize for converting invoices, purchase orders, and forms into structured Excel output cross-checked against document totals. Any answer can be exported as PDF, Word, Excel, PowerPoint, or Markdown. Cloud-only capabilities include image generation and editing, real-time voice with Live Translate across 14 languages, web search with citations, and contract-review depth applied automatically inside DataLens.

hYYa ai is designed for individual professionals and teams of any size who require private AI for work tasks. hYYa Vault is free forever, requires no account, and operates with no internet connection; prompts, replies, and conversation history remain on the device unless an online feature is explicitly activated. Conversations are never used to train AI models or sold. Cloud On-Demand credits do not expire, and unspent credits are refundable within 14 days. Additional Cloud capabilities include MCP tool server support (also available on-device), opt-in connections to eight external apps, opt-in memory, automated daily app briefs via Agents, full chat library export, and Bring Your Own API Key on Cloud Ultra.