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Why Tifa Window
An AI tool built for real work, not for the demo.
Sovereignty
The AI engine runs on your machine; your documents never leave it. Local‑first, with limited, transparent network egress.
Invisible engine
You write in plain language; the engine clarifies, decomposes, executes.
Business Xpacks
A business layer that reinforces the LLM: the model writes, verified code computes in a sandbox. No invented figures.
The invisible engine
You don’t write prompts. You describe what you want.
You write in plain language. You never write a “prompt”. The engine handles the rest, in four steps.
Clarification
The engine resolves ambiguity and reformulates your intent.
Decomposition
It breaks the request into tasks, driven by the local LLM.
Actors
Each task is assigned to the right role (writer, analyst, calculation…).
Execution
A structured deliverable comes out, ready to use and exportable.
Features
What you get from the free version on.
Local streaming chat
Real‑time answers, entirely on your machine.
Files + vision + OCR
PDF, Word, Excel, images. Offline reading and extraction.
Sourced ephemeral RAG
Passages cited from your documents, with no persistence.
Long sectioned deliverables
Intro + sections + conclusion, with ETA and streaming.
Real office exports
DOCX, XLSX, PPTX, ODT — 8 formatting styles.
Executable Xpacks
Sandboxed business calculations, persistent RAG and Projects.
Business Xpacks
The LLM writes. The code computes.
A business layer that reinforces the LLM: the model writes, verified code computes in a sandbox. No invented figures.
- ▸Stock — inventory variances, WAC / FIFO valuation.
- ▸Purchasing — quote comparison, best offer.
- ▸App development — idea → spec + prompts.
dropped into Tifa Window
Sovereignty
Your documents never leave your machine.
The AI engine runs on your machine and your documents never leave it. The app is local‑first: only two network egresses — account authentication and Premium web search — without any of your files. A decisive argument for healthcare, legal, accounting and defence.
Our stance on privacy →What leaves your machine — and what never does
Authentication & licence activation — the strict minimum.
Only your query is sent to fetch fresh public data.
Pricing
Free forever. Premium once.
The engine isn’t crippled in free. Premium adds orchestration, real office exports and executable Xpacks.
Free
Free, perpetual, no key.
- ✓Full Xprompts engine — unrestricted
- ✓Local streaming chat · vision · OCR
- ✓Attachments, ephemeral RAG, Markdown
- ✓4 languages · light / dark themes
Premium
Perpetual licence, a single payment.
- ✓Everything in free, plus:
- ✓Chained engine · long sectioned deliverables
- ✓Real DOCX / XLSX / PPTX / ODT exports
- ✓Executable Xpacks · persistent RAG · web search
7-day trial · no refund · secure purchase via Payhip
Frequently asked questions
Do my documents go to the internet?
No, never. The AI engine runs on your machine and your documents stay there. Only two egress paths exist: account authentication and Premium web search (query only).
Do I need an account and a connection?
A free account (email + password) is required for everyone. Authentication is non‑blocking and the app works offline for up to 3 days between checks.
Is the free version crippled?
The Xprompts engine is complete in free. Premium adds chained orchestration, office exports and executable Xpacks.
Is it available on Mac?
Windows is available today. macOS is coming soon; we don’t announce a date so we never promise what we can’t keep.
Try Tifa Window, for free.
Download the free version. Upgrade to Premium once you’re convinced — a single, lifetime payment.
Windows available · macOS soon