Formula Tracer for Excel

See what every formula actually depends on.

Click a cell. The Deckary tracer tokenizes the formula, color-codes every input, shows the live value of each one, and lets you drill into nested chains — without arrows cluttering your sheet.

7-day free trial • No credit card required

Our users work at companies like

Deckary helps consulting & industry firms to build better presentations

AirbusWarner Bros. DiscoveryUFCApolloS&P GlobalEYGELongchamp
AirbusWarner Bros. DiscoveryUFCApolloS&P GlobalEYGELongchamp
AirbusWarner Bros. DiscoveryUFCApolloS&P GlobalEYGELongchamp
AirbusWarner Bros. DiscoveryUFCApolloS&P GlobalEYGELongchamp
Bidirectional binding

A debugger for spreadsheets, not a set of arrows

Excel's native tracer draws lines on top of the grid. Deckary turns the formula itself into the inspection surface — every input is a colored chip wired to a numbered row, with its live value next to it.

Numbered chips

Every input is a colored chip in the formula

Live aggregates

See each input's contribution in tabular numbers

Drill 3 levels

Walk nested chains, breadcrumb keeps you oriented

Inline diagnostics

Volatiles, errors, external refs flagged in place

Sheet1!D14
$10,634,400
=SUM(1B2:B6) + 2Sheet2!C10 * 1.2
Inputs 2
Outputs 1
1
Sheet1!B2:B65×1
Σ 8,860,000
Σ of 5 numeric
2
Sheet2!C10f(x)
1,478,667
= COUNTIF(Leads, "won") * AvgDeal
Click a chip to jump · drill 3 levels deep
Sheet1!E26
#REF!
= IFERROR(INDIRECT("A1") * 1.085, [Q3.xlsx]Sales!B2)
#REF! error — referenced cell was deleted
Volatile · INDIRECT — recalculates on every change
Hardcoded constant · 1.085 — buried in the formula
External link · Q3.xlsx — breaks if file moves
Risk surfacing

What you reach for it for

The tracer earns its keep on the workbooks you didn't build, the formulas that don't add up, and the audits you have to ship — surfacing every risky pattern in the formula card itself.

Inherit a model

Learn an unfamiliar workbook in minutes

Debug a wrong number

Spot the input that's off at a glance

Pre-ship audit

Catch hardcodes and volatiles before you send

Read a long expression

Tokenized formulas beat the formula bar

Tracer vs. arrows vs. dedicated audit suites

Excel ships with arrows. Inquire and Macabacus ship with audit panels. Deckary ships with the binding between formula and data.

FeatureDeckary Formula TracerExcel Trace ArrowsExcel Inquire Add-inMacabacus Pro Audit
Inspection
Tokenized formula with chips per input
Live aggregate value next to each input
Click an input to drill into its precedentsLimitedLimited
Drill up to 3 levels deep without losing contextLimited
Highlights volatile functions inlineLimited
Flags external workbook refs in the formulaLimited
Surfaces formula errors as red chipsLimited
Keeps the grid clean — no arrows on the sheet

Try it on the model nobody wants to inherit

Install the Deckary add-in, click any cell, and the tracer is open. Read-only — safe on production workbooks.

What our users are saying

Consultants, corporate strategy & founders all love Deckary.

The AI slide builder turned my bullet points into a polished deck in seconds. Game changer.

James

James

Senior Consultant

I described our market analysis and got a perfect waterfall chart with insights. Incredible.

Edwin

Edwin

Strategy Analyst

Mekko charts that used to take 30 minutes now take 30 seconds. Finally works on Mac too.

Carla

Carla

Management Consultant

Pasted a CSV and it auto-generated the chart with the right formatting. Pure magic.

Alvin

Alvin

Principal Consultant

The AI understands consulting slide structure—action titles, bullets, everything.

Ruben

Ruben

Senior Associate

Built an entire executive summary deck from my notes in under 5 minutes.

Jen

Jen

Associate Partner

The AI slide builder turned my bullet points into a polished deck in seconds. Game changer.

James

James

Senior Consultant

I described our market analysis and got a perfect waterfall chart with insights. Incredible.

Edwin

Edwin

Strategy Analyst

Mekko charts that used to take 30 minutes now take 30 seconds. Finally works on Mac too.

Carla

Carla

Management Consultant

Pasted a CSV and it auto-generated the chart with the right formatting. Pure magic.

Alvin

Alvin

Principal Consultant

The AI understands consulting slide structure—action titles, bullets, everything.

Ruben

Ruben

Senior Associate

Built an entire executive summary deck from my notes in under 5 minutes.

Jen

Jen

Associate Partner

The AI slide builder turned my bullet points into a polished deck in seconds. Game changer.

James

James

Senior Consultant

I described our market analysis and got a perfect waterfall chart with insights. Incredible.

Edwin

Edwin

Strategy Analyst

Mekko charts that used to take 30 minutes now take 30 seconds. Finally works on Mac too.

Carla

Carla

Management Consultant

Pasted a CSV and it auto-generated the chart with the right formatting. Pure magic.

Alvin

Alvin

Principal Consultant

The AI understands consulting slide structure—action titles, bullets, everything.

Ruben

Ruben

Senior Associate

Built an entire executive summary deck from my notes in under 5 minutes.

Jen

Jen

Associate Partner

The AI slide builder turned my bullet points into a polished deck in seconds. Game changer.

James

James

Senior Consultant

I described our market analysis and got a perfect waterfall chart with insights. Incredible.

Edwin

Edwin

Strategy Analyst

Mekko charts that used to take 30 minutes now take 30 seconds. Finally works on Mac too.

Carla

Carla

Management Consultant

Pasted a CSV and it auto-generated the chart with the right formatting. Pure magic.

Alvin

Alvin

Principal Consultant

The AI understands consulting slide structure—action titles, bullets, everything.

Ruben

Ruben

Senior Associate

Built an entire executive summary deck from my notes in under 5 minutes.

Jen

Jen

Associate Partner

One add-in for the whole workbook

The same Deckary subscription that runs the formula tracer ships the agentic AI Excel agent, AI slide editing for PowerPoint, brand control, and consulting-grade charts.

AI Slide Agent

AI Slide Agent

Create and edit slides with AI. Describe your topic, attach data, and get polished slides — automatically using your brand fonts, colors, and layout.

Brand Control

Brand Control

Every slide AI creates follows your brand guidelines. Run consistency checks across your deck and save approved slides to a shared library.

Charts & Timelines

Charts & Timelines

AI generates waterfall, Mekko, Gantt, and bar charts — linked to Excel and styled to your brand.

Icons & Images

Icons & Images

2,000+ icons auto-suggested by AI based on your slide content. Country flags and AI-generated images included.

Shortcuts

Shortcuts

Align, distribute, swap, and resize — keyboard shortcuts used by top consulting firms.

Frequently Asked Questions

How the Excel formula tracer works

Excel Formula Tracer: Trace Precedents & Dependents Visually | Deckary