Turn sensitive data into insight with AI, without sharing your data.

Ask questions about your spreadsheets in plain English. The AI writes the analysis as Python code, and that code runs on your own PC. Your rows never reach the AI provider.

Choose your edition Join the macOS waitlist Watch the demo

30-day money-back guarantee. Try it on your own files first.

You’re on a Mac. Ann Haliszt runs on Windows today, and a macOS version is in development.

On a phone? Buy now and we’ll email the Windows download link so you can install at your desk. Confirm: purchase email includes the download link

Your rows never leave your PC
You bring your own Claude or OpenAI key
Windows today, macOS in development

Your PC

Every row and value stays here, and the Python runs here.

AI provider

“Which product lines saw the biggest margin drop from Q2 to Q3?”

columns: product_line, quarter, revenue, cost

No rows. No values.

See a full analysis, start to finish.

Watch a real session on a real file, then pick a sample question to see what the AI receives, the code it writes, and the result your PC produces.

90 seconds: a question, the generated code, the chart. Confirm: add your recording (CONFIG.videoSrc)

Sent to the AI provider

Your question and file structure

“Which product lines saw the biggest margin drop from Q2 to Q3?”

sales.xlsx
product_line, quarter, revenue, cost

Runs on your PC

The Python the AI wrote

import pandas as pd

df = pd.read_excel("sales.xlsx")
df["margin"] = 1 - df["cost"] / df["revenue"]

g = df.groupby(["product_line", "quarter"])
q = g["margin"].mean().unstack()
diff = (q["Q3"] - q["Q2"]) * 100
change = diff.sort_values().head(5)

Stays on your PC

The result

Margin change, Q2 to Q3, in percentage points

Accessories lost the most margin, down 6.1 points. Cables and Storage followed.

Sent to the AI provider

Your question and file structure

“Flag payments over $10,000 that were approved by the person who created them.”

payments.csv
payment_id, amount, created_by, approved_by, date

Runs on your PC

The Python the AI wrote

import pandas as pd

df = pd.read_csv("payments.csv")
flags = df[
    (df["amount"] > 10_000)
    & (df["created_by"] == df["approved_by"])
]
flags[["payment_id", "amount", "created_by"]]

Stays on your PC

The result

Flagged payments

payment_id	amount	created_by
P-20418	$14,250	user_014
P-20977	$11,800	user_007
P-21533	$18,400	user_014

3 of the 412 payments over $10,000 were approved by the person who created them.

Sent to the AI provider

Your question and file structure

“Show monthly revenue and mark any months that look unusual.”

revenue.csv
month, region, revenue

Runs on your PC

The Python the AI wrote

import pandas as pd

df = pd.read_csv("revenue.csv",
                 parse_dates=["month"])
m = df.groupby("month")["revenue"].sum()

roll = m.rolling(6, min_periods=3)
z = (m - roll.mean()) / roll.std()
unusual = m[z.abs() > 2]

Stays on your PC

The result

Monthly revenue, in thousands, unusual months marked

August is 45% above July and December is 37% below November. Every other month follows the trend.

Illustrative samples with made-up data. Your results come from your own files. Confirm: replace with output from a real session

The AI writes the analysis. Your machine runs it.

The AI model never sees your data. It sees your question and the structure of your file, then writes code. That code runs locally.

1
Ask in plain English
Open a spreadsheet and type your question, like you would ask a colleague.
2
The AI writes Python
It works from your question and your column names, and writes the code that answers it.
3
Your PC runs it
The code runs on your data, on your machine. You get the answer, a chart and an explanation.

What goes to the AI provider

Your question
A guiding prompt
Your file’s structure: column names and data types

What stays on your PC

Every row and value in your files
The Python that analyzes them
Your results, charts and session transcripts

Your data never reaches the AI model, or any server Ann Haliszt operates.

Every answer includes the Python behind it and a plain-English explanation, so you can see how each conclusion was produced. Confirm: no sample rows, result values or error text are ever sent back to the model

Who is behind Ann Haliszt.

A short note from the person who signs your outbound emails: who you are, why you built this, and how to reach you directly. Confirm: replace with your real note, name and photo

Company: legal entity name and country. Confirm: add company details

Check us out before you buy

How it differs from uploading files to a cloud AI tool

Question	Ann Haliszt	Typical cloud AI tool
Where are your files processed?	On your PC, or on your own servers with Enterprise	In the vendor’s cloud
What does the AI provider receive?	Your question and column names	The contents of your file
Can you see how an answer was produced?	Yes: the Python and an explanation for every answer	Varies by tool
How do you pay?	One-time license, plus your own API usage	Usually a monthly subscription

A general comparison. Individual tools vary.

Ann Haliszt Enterprise.

The same architecture as the desktop app, delivered as a web app on your own servers.

Runs on your servers, inside your network
Users work in the browser
The generated code runs on your servers
Centralized governance with SSO, RBAC and audit controls

Book a security walkthrough Download the security overview

Rolling out to a team?

Bring your security and IT reviewers to the walkthrough. We’ll cover the data flow, deployment and access controls, and answer questionnaires. Confirm: enterprise deployment and pricing details

Before you buy.

A quick check so Ann Haliszt works for you from day one.

You’ll need

A Windows PC Confirm: supported versions and specs
An API key from Anthropic (Claude) or OpenAI. You pay them directly for what you use. Confirm: typical cost per analysis session
Your data as XLSX or CSV files
Permission to install software Confirm: admin rights, signed installer

Good to know

You need an internet connection to reach your AI provider.
Standard analyzes one file at a time. Pro and Premium handle multiple files and complete Excel workbooks.
Your price includes 12 months of updates.

On a Mac?

A macOS version is in development. Get one email when it’s ready.

Pay once. Keep it.

Every edition is a one-time license with a 30-day money-back guarantee. Your only ongoing cost is the API usage you choose to buy from Anthropic or OpenAI.

Standard

For consultants and freelance analysts

$299one-time

Analyze one file. Ask anything. Keep your data private.

One source file at a time (XLSX or CSV)
Automatic data exploration and plain-English questions
Every answer explained
Static charts and HTML transcript download
Fast and standard models
Claude or OpenAI, with your own key
12 months of updates

Get Standard

30-day money-back guarantee

Recommended

Pro

For financial analysts and compliance teams

$499one-time

Go beyond one spreadsheet.

Everything in Standard
Multiple files and complete Excel workbooks
Interactive charts (ECharts)
Predictive analytics
Premium models, and regenerate any answer with another model
Claude or OpenAI, with your own key
12 months of updates

Get Pro

30-day money-back guarantee

Premium

For power users and provider-flexible teams

$799one-time

Use the best model for every question.

Everything in Pro
Claude and OpenAI in one edition
Compare both providers’ answers side by side and keep the better one
Switch provider or model for any question
Two API keys, one for each provider
12 months of updates

Get Premium

30-day money-back guarantee

Standard and Pro run on the provider you choose, Claude or OpenAI. Premium includes both. Confirm: is the provider chosen at purchase or at install?

Compare every feature

Capability	Standard	Pro	Premium
Automatic data exploration (EDA)	Included	Included	Included
Plain-English questions	Included	Included	Included
Source files per analysis	One file	Multiple files and complete Excel workbooks	Multiple files and complete Excel workbooks
File formats	XLSX, CSV	XLSX, CSV	XLSX, CSV
Explanation of every answer	Included	Included	Included
Session transcript	HTML download	HTML download	HTML download
Charts	Static	Interactive (ECharts)	Interactive (ECharts)
Predictive analytics	Not included	Included	Included
Model tiers	Fast and standard	Fast, standard and premium	Any supported Claude or OpenAI model
Regenerate an answer with another model	Not included	Yes, within your provider	Yes, across providers
AI provider	Claude or OpenAI	Claude or OpenAI	Claude and OpenAI
Switch provider per question	Not included	Not included	Included
Side-by-side Claude and OpenAI answers	Not included	Not included	Included
API keys	Your own key	Your own key	Two keys, one per provider

Updates and upgrades. Each license includes 12 months of free updates. After that, upgrading to a newer release is optional, at roughly 40% of the original price. Your license doesn’t expire, and the app keeps working as long as the Claude or OpenAI models you’ve chosen remain supported by their providers. Confirm: exact upgrade price, license terms (per user or per machine)

30-day money-back guarantee

Use Ann Haliszt on your own files for 30 days. If it isn’t right for you, ask for a refund and get the full price back.

Refunds are self-serve from the link in your receipt email, or you can contact us.

Read the refund policy

Five or more seats

Standardize your whole team on one edition with a Team Pack from $1,999. Confirm: which edition and seat pricing

Ask about a Team Pack

Enterprise

A web app on your own servers, inside your own network, with centralized governance, SSO, RBAC and audit controls.

Book a security walkthrough

Questions before you buy.

Do I need my own API key, and what does it cost?

Yes. You create a key with Anthropic (Claude) or OpenAI and pay them directly for what you use. Your Ann Haliszt license is a one-time payment, with no subscription. Confirm: typical cost per analysis session, measured on real files

What exactly is sent to the AI provider?

Your question, a guiding prompt, and your file’s structure: column names and data types. The rows and values in your files don’t reach the AI provider or any server Ann Haliszt operates.

Is it safe to run AI-written code on my PC?

Every answer shows the Python that produced it, and the HTML transcript keeps a record of each session, so you can read exactly what ran. Confirm: describe how the code is contained (network access, file permissions, allowed packages)

Will my IT team let me install it?

Your IT team can review how it works before you buy. Send them the security and architecture overview and the install guide. Confirm: signed installer, admin rights, silent install and allowlisting details

How does licensing work?

You pay once for an edition and keep it. The price includes 12 months of updates. Later versions are optional, at roughly 40% of the original price. Confirm: per user or per machine, and activations allowed

What does “perpetual” mean here?

Your license doesn’t expire and there is no subscription. The app keeps working for as long as the Claude or OpenAI models you’ve chosen remain supported by their providers.

How do refunds work?

You have 30 days from purchase. Use the refund link in your receipt email, or contact us, and you’ll get the full price back.

Can I use both Claude and OpenAI?

Standard and Pro use one provider, the one you choose, and Pro can regenerate any answer with another model from that provider. Premium includes both, lets you switch per question, and shows both providers’ answers side by side.

Can I see it live before I buy?

Yes. Book a 15-minute walkthrough and we’ll run a question of yours on a sample file. Book a walkthrough

When is macOS coming?

A macOS version is in development. Join the waitlist and we’ll email you when it’s ready.

Run it on your own files. If it isn’t right, get your money back.

A one-time license, a 30-day money-back guarantee, and your data stays on your PC.

Choose your edition Book a 15-minute walkthrough

Turn sensitive data into insight with AI, without sharing your data.

See a full analysis, start to finish.

Your question and file structure

The Python the AI wrote

The result

Your question and file structure

The Python the AI wrote

The result

Your question and file structure

The Python the AI wrote

The result

The AI writes the analysis. Your machine runs it.

Ask in plain English

The AI writes Python

Your PC runs it

What goes to the AI provider

What stays on your PC

Who is behind Ann Haliszt.

Check us out before you buy

How it differs from uploading files to a cloud AI tool

Ann Haliszt Enterprise.

Rolling out to a team?

Before you buy.

You’ll need

Good to know

On a Mac?

Pay once. Keep it.

Standard

Pro

Premium

30-day money-back guarantee

Five or more seats

Enterprise

Questions before you buy.

Run it on your own files. If it isn’t right, get your money back.