Excel add-in · Cleanup + AI analyst

Messy spreadsheet in.
Trustworthy data out.

Inavolus Tools fixes duplicates, stray spaces, mixed dates and currency junk in one click — then puts an AI analyst beside your data to answer questions, write formulas, and label columns. No syntax to memorize. Nothing to break.

Add to Excel — free Try it on a CSV right now
No credit card to start · works fully offline · cancel anytime
Cleaning runs 100% on your device — your data never leaves
Illustration of messy spreadsheets flowing through Inavolus and emerging as one clean, orderly sheet
One click. That's the whole workflow.
20+ transforms — free forever, no card 100% on-device cleaning, even offline AI analyst with a 7-day free Pro trial Stripe checkout · cancel anytime
Proof, not promises

Watch it clean a real file — right here

This demo runs entirely in your browser. Nothing is uploaded, ever. The Excel add-in does exactly the same thing to your selected range.

inavolus — local cleaning engine

Drop a messy CSV here

or click to choose a file — it never leaves this tab

Free forever

The cleanup toolkit

Every tool below runs on your device, works offline, and costs nothing — no card, no account. Built for the person who just inherited the spreadsheet.

  • One-click cleanup

    Trim spaces, drop empty rows and columns, remove duplicates, tidy headers.

  • Dates & numbers

    Mixed date formats become YYYY-MM-DD; currency junk and stray commas get stripped.

  • Case & text

    UPPER, lower, Title or Sentence case; strip accents, symbols and double spaces.

  • Split & merge

    Text-to-columns by any delimiter, split names into first/last, or combine fields.

  • Find, replace & extract

    Bulk find & replace; pull emails, URLs and numbers into a fresh column.

  • Fill & dedupe

    Fill blank cells down from above; collapse duplicate rows with one click.
Illustration of a spreadsheet being tidied by a small orbit of cleaning tools
Illustration of an AI assistant orb connected to a highlighted spreadsheet column
Pro · powered by Claude

An analyst beside every sheet

Select a range, say what you want in plain English. Only the cells you select are sent — nothing else, and nothing is stored.

  • Ask  “Which region grew fastest?”

    Plain-English answers computed from the selected range — no pivot table required.

  • Formula  “Monthly growth rate, as a %”

    Describe it; Inavolus writes the Excel formula and drops it into the active cell.

  • Categorize  “Label these as Lead / Customer / Churned”

    Batch-label a whole column into your categories, written to a new column.

  • Extract  “Pull the company name out of these emails”

    Turn messy free text into a structured field — extracted into its own column.
Privacy by architecture

Your data path is short enough to draw

Most “AI for spreadsheets” tools ship your whole workbook to a SaaS black box. Inavolus is built so you can see — and, self-hosted, control — exactly where every byte goes.

1Cleaning & transforms run on your device, inside the task pane. Spreadsheet content is never transmitted — it works with the network cable unplugged.
2AI requests send only the cells you select, over HTTPS, to the proxy and on to Anthropic — which doesn’t train on API data. Nothing is stored; the answer comes straight back.
3What we keep: no spreadsheet content, no prompts, no raw IPs. Just an anonymous usage counter and your license key.

Privacy Policy · Terms · Support

Laptop with a spreadsheet protected under a translucent dome with a padlock
Pricing

Start free. Upgrade when it pays for itself.

Cleaning and all 20+ transforms are free forever. You only pay when the AI is saving you real hours — and you can try that free for a week first.

Founding-member pricing — lock in these launch rates while we grow.
Monthly
Annual — 2 months free

Free

For everyone who cleans data
$0 forever
No credit card — ever
  • Unlimited one-click cleaning
  • All 20+ transform tools
  • Runs 100% on your device
  • A few AI requests every day
Start free
MOST POPULAR

Pro

For weekly spreadsheet work
$110/yr
≈ $9.17/mo · 2 months free
  • Everything in Free
  • Unlimited AI — never hit a limit
  • Batch categorize & extract
  • No “Cleaned with Inavolus” watermark
  • Priority support
Free for 7 days, then $110/yr. Cancel anytime.

Max

For heavy, whole-sheet workloads
$350/yr
≈ $29.17/mo · 2 months free
  • Everything in Pro
  • Highest AI limits & largest ranges
  • Whole-sheet bulk operations
  • Advanced multi-field extraction
  • Priority processing + early access

Secure checkout by Stripe 14-day money-back guarantee Cancel anytime — keep your data
Get started

Install in Excel

Available as a sideload today — AppSource listing in progress.

  1. Excel on the web: Insert → Add-ins → Upload My Add-in → choose manifest.xml.
  2. Excel for Mac: drop manifest.xml into ~/Library/Containers/com.microsoft.Excel/Data/Documents/wef/, restart Excel, then Insert → My Add-ins.
  3. Open the Inavolus button on the Home tab. Select a range → clean, transform, or ask.

Full setup (HTTPS deploy + AI proxy) lives in DEPLOY.md.

Questions

FAQ

Does my spreadsheet data get uploaded?

No — cleaning and all transforms run entirely on your device. Only the AI features send the cells you selected (plus your instruction) over HTTPS to the proxy and on to Anthropic; the answer is returned and nothing is stored. See the Privacy Policy.

Do I need an API key?

No. Cleaning needs nothing at all. AI features go through the operator's proxy, which holds the Anthropic key server-side — it never reaches the add-in or your browser.

What does the free plan actually include?

Every cleaning and transform tool, unlimited, forever — plus a few AI requests per day so you can feel the difference. Free CSV downloads from the site demo carry a one-line credit; Pro removes it.

Will it work in Google Sheets?

Excel ships first. The cleaning/AI engine is platform-agnostic, so Sheets support is a thin adapter on the same core — not a rewrite.

Can I cancel anytime?

Yes. Pro and Max are subscriptions you can cancel anytime; access continues to the end of the billing period, and there's a 14-day money-back guarantee.

Get the AppSource launch note

One email when we list on AppSource, plus early-access perks. No spam, no drip campaign.